Портативный детектор беспилотных летательных аппаратов

Полезная модель относится к радиоприемным устройствам для обнаружения активных источников радиосигнала в радиусе действия прибора, а именно беспилотных летательных аппаратов (БПЛА). Портативный детектор БПЛА состоит из корпуса г-образной формы, огибающего конечность пользователя, размещенных в корпусе направленной печатной антенны, управляющего микропроцессора, радиоприемного модуля, средств индикации и системы автономного питания. Технический результат – компактность расположения компонентов устройства, размещаемого на конечности пользователя. 5 ил.

Квадратурный фазовый пеленгатор с использованием в качестве гетеродина сигнала с выхода одной из антенн

Квадратурный фазовый пеленгатор предназначен для обнаружения и высокоточного измерения пеленга излучающих объектов. Техническим результатом является обеспечение возможности пеленгования источников радиосигналов в широкой полосе частот без перестройки устройства и использования существенных вычислительных ресурсов. Такой результат обеспечивается за счет того, что для получения первой квадратуры выход первой антенны через первый малошумящий усилитель соединен с гетеродинными (ГЕТ) входами первой группы 1…N-1 балансных смесителей, для получения второй квадратуры выход первой антенны через первый малошумящий усилитель и фазовращатель соединен с ГЕТ входами второй группы 1…N-1 балансных смесителей, выходы двух групп балансных смесителей 1…N-1 соединены через электронные коммутаторы с двумя входами аналого-цифровых преобразователей микроконтроллера. 5 ил.

ОЦЕНКА УГЛА ПРИХОДА РАДИОСИГНАЛА В СЕТИ РАДИОСВЯЗИ

Заявленная группа изобретений относится к механизмам для оценки угла прихода радиосигнала в сети радиосвязи. Техническим результатом является обеспечение эффективного способа оценки угла прихода, который может использоваться для эффективного управления лучом. Способ выполняют устройством приемопередатчика радиосигнала. Устройство приемопередатчика радиосигнала содержит антенную решетку, которая посредством аналогового формирования диаграммы направленности выполнена с возможностью переключаться между по меньшей мере двумя местоположениями фазового центра. При этом радиосигнал принимают антенной решеткой с использованием первого из двух взаимно различных местоположений фазового центра в первом временном слоте и второго из двух взаимно различных местоположений фазового центра во втором временном слоте. Способ содержит этап, на котором получают результаты измерений радиосигнала, принимаемого антенной решеткой с использованием двух взаимно различных местоположений фазового центра. Способ содержит ...

VERFAHREN ZUM RICHTUNGSSCHÄTZEN

ANTENNA SYSTEM AND METHOD FOR MEASURING THE AZIMUTH AND ELEVATION ANGLES OF AN ACTIVE, SIGNAL SENDING RADIOSONDE

METHOD FOR INVESTIGATING THE PROPAGATION OF ELECTROMAGNETIC OR ACOUSTIC WAVES

Installation de commande et de contrôle d'orientation d'un cadre de radiogoniomètre d'avion.

POSITION DETERMINATION USING TIME OF ARRIVAL MEASUREMENTS IN A WIRELESS LOCAL AREA NETWORK

METHOD FOR JOINT DETERMINATION OF THE DIRECTION OF ARRIVAL AND POLARIZATION OF A SIGNAL

SYSTEM AND METHOD FOR COMPUTING TARGET INFORMATION

The present invention proposes a system and method for computing information about targets from a specific frequency signal based on a technique for transmitting the specific frequency signal and decomposing a plurality of adjacent targets having similar characteristics when the specific frequency signal is reflected on the adjacent targets. The system according to the present invention includes a transmission processing part for transmitting first frequency signals in a direction in which targets are located; a reception processing part for converting second frequency signals into digital signals when the first frequency signals are reflected on adjacent targets and input as the second frequency signals; and a matrix computing part for computing a covariance matrix based on the digital signals including information on the adjacent targets; an eigen component computing part for computing eigenvectors based on a covariance matrix; and a target information computing part for computing information ...

MOBILE TERMINAL, AND LOCATING METHOD AND DEVICE

Adjustable telescope tracking platform

An equatorial tracking platform for a telescope that comprises two rolling surfaces, each in contact with a pair of rollers which each have an adjustment for the latitude setting. One rolling surface is a complex 3-dimensional contour, which provides for a differing radius for each latitude setting, while the other rolling surface is of fixed radius. By varying the angle of the roller pairs, the virtual axis of rotation is changed to be aligned parallel to the earth's rotational axis, thus allowing a telescope to accurately track a celestial object.

АНТЕННАЯ СИСТЕМА И СПОСОБ ОПРЕДЕЛЕНИЯ АЗИМУТА И УГЛОВ ВОЗВЫШЕНИЯ АКТИВНОГО РАДИОЗОНДА, ПОСЫЛАЮЩЕГО СИГНАЛЫ

Изобретение относится к антенной технике. Техническим результатом является определение азимута и углов возвышения радиозонда. Антенная система для измерения азимута и углов возвышения активного, посылающего сигналы радиозонда (31) содержит первую группу (13) пассивных антенн, включающую в себя, по меньшей мере, две антенные решетки (11а, 11b), диаграмма направленности которых является широкой, по меньшей мере, в вертикальной плоскости для измерения азимутального угла радиозонда (31) на основе разности фаз между антенными решетками (11а, 11b); вторую группу (13) пассивных антенн, включающую в себя, по меньшей мере, две антенные решетки (10а, 10b), диаграмма направленности которых является широкой, по меньшей мере, в вертикальной плоскости для измерения угла возвышения радиозонда (31) на основе разности фаз между антенными решетками (10а, 10b) и углового положения антенного поля (1), и, по меньшей мере, одну третью антенну (8), имеющую высокий коэффициент направленного действия для приема ...

DIRECTION FINDER ROTATABLE IN AZIMUTH

An apparatus and method for measuring the azimuth and elevation of an object. The apparatus comprises a platform (1); a base plate (2) rotatable in a plane, which is essentially horizontal; a sensor frame (3) attached to the base plate (2); at least three sensor elements (4, 5, 6) attached to the sensor frame; and an electronics unit for processing signals received by the sensors. The sensor frame (3) is rigidly attached to the base plate (2) and the directional pattern of the sensor elements (4, 5, 6) is such as to cover the entire angle span of interest in the elevation plane, while the pattern covers an essentially narrower angle in the azimuth plane. …… ...

PULSE GENERATION SYSTEM

RADIO-FREQUENCY PULSE GENERATION SYSTEM AND METHOD

NOVEL NARROWBAND RSSI TECHNIQUE(S) FOR THE MITIGATION OF ADJACENT SATELLITE INTERFERENCE

A device and method for tracking a signal of interest from a signal transmitting device, in the presence of cross-polarization or adjacent emitter interference, is provided. An antenna, which may have a beamwidth greater than an angular spacing of geo-stationary transmitting device, is used to receive the signal of interest from a transmitting device. The received signal of interest is analyzed to determine a frequency characteristic of the received signal of interest, and a filter of a plurality of filters is selected based on the determined bandwidth of the signal of interest. The selected filter is applied to the received signal of interest.

COMPACT DEVICE OF RADIO MONITORING.

RADIO?FREQUENCY PULSE GENERATION SYSTEM AND METHOD

Electric controller synchronized

"Radar System"

Un système à dispositif de recherche d'engin destiné à être utilisé avec des engins lancés de l'air vers des cibles fixes au sol. La poursuite est réalisée en fonction de l'"angle d'observation" (ΦL et θL) de l'axe de l'engin et de l'axe de visée. La polarisation dans les mesures peut donner un angle erroné d'observation et en conséquence une trajectoire décalée de vol. Un signal (rs) est dérivé et dépend des erreurs de trajectoire, par exemple d'une pente d'axe de visée, et un signal de correction (Φc) en est dérivé afin qu'il soit ajouté à l'angle mesuré d'observation. A un stade ultérieur, une erreur résiduelle d'angle de visée (θe) est numérisée et des valeurs limitées de correction (θc) sont intégrées (34) dans une boucle presque ouverte afin qu'un angle d'hélice (θd) soit supprimé lentement indépendamment de l'amplitude de l'erreur.

DEVICE TO EMIT OR RECEIVE MILLIMETRE-LENGTH ELECTROMAGNETIC WAVES ABLE TO CREATE A TWO-DIMENSIONAL IMAGE

Le dispositif de l'invention comporte une antenne à fente évasée flexible (12) qui est fixée sur un dispositif à solénoïde (20) qui communique à l'antenne une force de vibration pour qu'elle balaie le champ d'observation. Un modulateur d'amplitude 2D (34) est fixé au bord avant de l'antenne pour communiquer un caractère orthogonal au signal qui est émis ou reçu, pour réaliser un balayage 2D. Un processeur de signal (32) compare le signal détecté, par auto-corrélation, avec un modèle d'un faisceau ayant une distribution de puissance orthogonale.

ADAPTIVE ARRAY CONTROL DEVICE, METHOD, AND PROGRAM, AND ITS APPLIED ADAPTIVE ARRAY PROCESSING DEVICE, METHOD, AND PROGRAM

... [PROBLEMS TO BE SOLVED] An adaptive array control method, device, and program, and an adaptive array processing method, device, and program are provided to precisely carry out coefficient updating control independent of frequency characteristics of a signal or its arriving direction. [MEANS FOR SOLVING THE PROBLEMS] A solution for the problems is characterized in carrying out array-processing of signals received from a plurality of differently spaced sensor pairs, and precisely estimating a disturbing power by using an obtained result of the array-processing. More concretely, a multiple blocking matrix circuit (320) is provided to carry out the array-processing of the signals received from a plurality of differently spaced sensors and, based on its output of an array-processed signal, precise coefficient updating control is executed, so that deterioration of an output signal or breathing noise is reduced and high quality array processing can be performed.

CHANNEL ESTIMATION IN LARGE SCALE MIMO SYSTEMS USING ITERATIVE LOCATION BASED SPATIAL FILTERING

The disclosure relates to technology for iterative localization and channel estimation in a communication system. A radio network node detects user location information from user equipment in a geographic region, where the geographic region includes a location cluster having multiple location levels. A location signature profile is formed for each level based on the location signature of a corresponding location level in the cluster, and a filter is generated for each level based on the location signature. Upon application of the filter that matches the location level of the location user information, the channel is estimated and the user location information is updated based on the channel estimation. The process is repeated until the user location information converges with a preselected convergence value.

DRONE ENCROACHMENT AVOIDANCE MONITOR

Disclosed are examples of systems, apparatus, methods and computer program products for locating unmanned aerial vehicles (UAVs). A region of airspace may be scanned with two scanning apparatuses. Each scanning apparatus may include one or more directional Radio Frequency (RF) antennae. The two scanning apparatuses may have different locations. Radio frequency signals emitted by a UAV can be received at each of the two scanning apparatuses. The received radio frequency signals can be processed to determine a first location of the UAV. 1. A method for detecting unmanned aerial vehicles (UAVs) in a sensitive security area , the method comprising:scanning, with a plurality of scanning apparatuses, a region of airspace associated with the sensitive security area, each scanning apparatus comprising one or more directional Radio Frequency (RF) antennae, each of the scanning apparatuses having different locations, at least one of the scanning apparatuses being connected with a moveable vehicle;receiving first radio frequency signals emitted by a first UAV at the scanning apparatuses, a frequency of the first radio frequency signals being a downlink frequency of the first UAV;processing, based on an angular relationship between the locations of the scanning apparatuses and the first UAV, the first radio frequency signals to determine a first location of the first UAV.2. The method of claim 1 , further comprising:providing the first radio frequency signals to a display device, the display device being configured to process the first radio frequency signals to cause display of video associated with a camera associated with the first UAV.3. The method of claim 1 , further comprising:scanning, with an aircraft-mounted scanning apparatus, a region of ground space associated with the sensitive security area, the aircraft-mounted scanning apparatus comprising one or more further directional RF antennae;receiving, at the aircraft-mounted scanning apparatus, radio frequency signals ...

System for detecting, tracking, and reconstructing signals in spectrally competitive environments

A system applicable to acoustic, seismic, electromagnetic, hydrodynamic, and shock waves utilizing a map between signal time series and signal vectors defining the mathematical wave field model characterizing the signal's wave field. This map is developed from wave models relating field values to those on surfaces and corresponding uniqueness theorems. The system should allow for improved resolving power in bearing and elevation for discrimination of sources; detection and direction finding for signals below the average background level; detection based upon resolving power and signal vector characteristics rather than signal to noise ratio; reconstruction of signals of resolved sources for their transmitted information content; and multiple modes of operation. Adaptive incorporation of known undesired signals into the noise background and/or treatment of asymmetric background noise fields is permitted through use of a noise metric-based map yielding signal direction in the presence of ...

RF-IMPULSERZEUGER-SYSTEM UND -VERFAHREN

Radar system

Geo-location of jamming signals

Shared experiences in panoramic video

Method for evaluating direction

STEERABLE NULL ANTENNA PROCESSOR WITH GAIN CONTROL

An adaptive signal processing system for enhancing the signalto-interference characteristics on both received and transmit, using an in-phase quadrature correlator to control phase and amplitude adjust circuits located in the antenna signal paths. To increase the dynamic range, automatic gain control circuits are included in the reference and feedback signal paths to the correlator.

NOVEL NARROWBAND RSSI TECHNIQUE(S) FOR THE MITIGATION OF ADJACENT SATELLITE INTERFERENCE

A device and method for tracking a signal of interest from a signal transmitting device, in the presence of cross-polarization or adjacent emitter interference, is provided. An antenna, which may have a beamwidth greater than an angular spacing of geo-stationary transmitting device, is used to receive the signal of interest from a transmitting device. The received signal of interest is analyzed to determine a frequency characteristic of the received signal of interest, and a filter of a plurality of filters is selected based on the determined bandwidth of the signal of interest. The selected filter is applied to the received signal of interest.

Method for adjusting two-dimensional virtual baseline in measuring angle with interferometer

GONIOMETER AMPLITUDE AND ASSOCIATED PLATFORM

DEVICE AND a METHOD FOR MEASURING the AZIMUTH AND the SITE Of an OBJECT

ESTIMATING A SOURCE LOCATION OF A PROJECTILE

According to examples of the presently disclosed subject matter, there is provided a system for estimating a source location of a projectile, comprising an optics an optics subsystem, a radar subsystem and a processor. The processor is adapted to use range and velocity measurements obtained from data provided by the radar subsystem, a source direction and an event start time obtained from data provided by the optical subsystem and a predefined kinematic model for the projectile for estimating a range to a source location of the projectile.

端末装置、情報表示システム、プログラム

Способ определения местоположения сканирующей РЛС пассивным многолучевым пеленгатором

Изобретение относится к области радиолокации и предназначено для определения местоположения радиолокационной станции (РЛС) секторного обзора. Техническим результатом изобретения является расширение функциональных возможностей путем обеспечения определения дальности до РЛС, имеющей диаграмму направленности антенны (ДНА), сканирующую в заданном секторе. В заявленном способе пассивным многолучевым пеленгатором осуществляют измерение как минимум двух разностей времени прихода сигналов, излученных боковыми лепестками антенной системы РЛС, и сигналов, переизлученных локальными участками отражения земной или водной поверхности при их облучении главным лепестком ДНА, а также азимутов на РЛС и соответствующие участки локального отражения. На основании полученных первичных измерений производят косвенную оценку угла между направлением на РЛС и направлением положения ее ДНА, что в совокупности с измеренными разностями расстояний и азимутами позволяет оценить дальность до РЛС. 4 ил.

Shared experiences in panoramaic video

One embodiment provides a method, including: receiving, using a camera, at least one panoramic video; determining, using an electronic device, a spatial location in the panoramic video associated with a selection by at least one viewer; obtaining, at the electronic device, a request by the at least one viewer to share the spatial location with at least one other viewer; and sending, using the electronic device, information associated with the spatial location to the at least one other viewer. Other aspects are described and claimed.

Method for evaluating direction

Laying of nautical navigation bearing - uses radio-goniometer with coloured LED indicating presence of beacon signal

Technique for detecting energy and determining the frequency of constituent energy components

Frequency and other characteristics of energy contained in a region of the electromagnetic or acoustic spectrum under examination is determined by subdividing the region, examining each subdivision for energy content, and then further subdividing and examining those subdivisions exceeding a threshold energy. This process is continued until the bandwidth of the last subdivision is equal to the desired frequency resolution.

Antenna arrangement for DOA estimation

An antenna arrangement including at least two antenna functions arranged to cover a certain angular sector, each antenna function comprising a corresponding antenna port. The antenna arrangement is configured to perform: a first direction of arrival (DOA) estimation for a transmitting device at a first frequency, and a second DOA estimation for the transmitting device at a second frequency, wherein the second frequency has a larger magnitude than the first frequency, and wherein at least one second frequency grating lobe is apparent in the angular sector at the second frequency. The antenna arrangement is configured to: distinguish the at least one second frequency grating lobe from a second frequency main lobe using results from the first DOA estimation, and identify a pointing direction of the second frequency main lobe as a resulting DOA estimation. Related methods are also described.

АНТЕННАЯ СИСТЕМА И СПОСОБ ОПРЕДЕЛЕНИЯ АЗИМУТА И УГЛОВ ВОЗВЫШЕНИЯ АКТИВНОГО РАДИОЗОНДА, ПОСЫЛАЮЩЕГО СИГНАЛЫ

... 1. Антенная система для измерения азимута и углов возвышения активного, посылающего сигналы радиозонда (31), содержащая первую группу (13) пассивных антенн, включающую в себя по меньшей мере две антенные решетки (11а, 11b), диаграмма направленности которых является широкой по меньшей мере в вертикальной плоскости, для измерения азимутального угла радиозонда (31) на основе разности фаз между антенными решетками (11а, 11b) и углового положения антенного поля (1); вторую группу (12) пассивных антенн, включающую в себя по меньшей мере две антенные решетки (10а, 10b), диаграмма направленности которых является широкой по меньшей мере в вертикальной плоскости, для измерения угла возвышения радиозонда (31) на основе разности фаз между антенными решетками (10а, 10b); и по меньшей мере одну третью антенну (8), имеющую высокий коэффициент направленного действия для приема телеметрического сигнала, причем диаграмма направленности антенны (8) является узкой в азимутальной плоскости и широкой в вертикальной ...

IMPROVEMENTS TO ANTENNA SYSTEMS

Service request system

A service request system comprises a number of request units 5 located within a service area, a number of receivers 4, a location unit 3 and a display. The request unit 5 comprises a manual control and wireless radio transmitter and sends a radio request for service signal in response to operation of the manual control. A receiver receives a request for service signal and reports reception of the request for service signal and the relative position, relative to itself, of the request unit to the location unit. The location unit derives the location of the sending request unit within the service area from the report and relative position and shows this location on the display.

Service request system

Shared experiences in panoramaic video

Radar system

STEERABLE NULL ANTENNA PROCESSOR WITH GAIN CONTROL

Very/ultra high frequency signal receiving/processing device for broadband radio monitoring system, has sub-assembly managing resources, and conversion module producing voltages necessary for functioning of modules fixed on surfaces of case

L'invention se rapporte au domaine des systèmes de radio surveillance, et en particulier des systèmes réalisant à la fois des fonctions de mesure de spectre et de localisation d'émissions. L'invention consiste en une structure regroupant l'ensemble des moyens nécessaires pour réaliser ces fonctions, l'ensemble de ces moyens étant gérés et synchronisé par un calculateur intégré au dispositif. Ces moyens sont montés dans un boîtier étanche qui en assure la protection. Le montage est réalisé de façon à ce que ce refroidissement puisse s'effectuer uniquement par convection. L'invention s'applique en particulier aux systèmes de radio surveillance portables.

Method and device for adjusting an antenna for receiving television signals.

Television antenna position control appts. and process

Procédé de réglage d'une antenne de réception de signaux de télévision, comprenant les étapes consistant à générer un signal sonore dont un paramètre est fonction de l'amplitude de la porteuse du signal transmis par l'antenne, et à régler l'antenne en se fondant sur les variations de ladite caractéristique.

ULTRA-WIDEBAND RANGING WAVEFORM

Methods, systems, devices, and apparatuses are described for location tracking in which each tag used to track an asset or person in an indoor environment transmits ranging waveforms used to estimate a location of the tag. Multiple tags may concurrently transmit without interfering with each other by having each tag use a distinct frequency shift for the ranging waveforms. Access points may be deployed throughout the indoor environment as part of a wireless network (e.g., ultra-wideband or UWB network) that tracks the assets. The access points may receive the ranging waveforms transmitted by the tags and may perform measurements based on the ranging waveforms. The measurements may be sent to a tracking management server to estimate the location of the tags. The server may also determine and assign the distinct frequency shifts used by the tags and may modify the assignment when the number of tags being tracked changes.

ANTENNA SYSTEM AND METHOD FOR MEASURING THE AZIMUTH AND ELEVATION ANGLES OF AN ACTIVE, SIGNAL SENDING RADIOSONDE

The present invention relates to an antenna system and method. The antenna system for measuring azimuth and elevation angles of an active, signal sending radiosonde (31), comprises a first passive antenna group (13) comprising at least two antenna arrays (11a, 11b), the direction pattern of which is wide at least in elevation plane for measuring azimuth angle of the radiosonde (31) based on the phase differences between the antenna arrays (11a, 11b), a second passive antenna group (12) comprising at least two antenna arrays (10a, 10b), the direction pattern of which is wide at least in elevation plane for measuring the elevation angle of the radiosonde (31) based on the phase differences between the antenna arrays (10a, 10b) and the rotational position of the antenna field (1), and at least one third antenna (8) having high gain for receiving the telemetry signal, the direction pattern of which element (8) is narrow in azimuth plane and wide in elevation plane. According to the invention ...

DRONE ENCROACHMENT AVOIDANCE MONITOR

Disclosed are examples of systems, apparatus, methods and computer program products for locating unmanned aerial vehicles (UAVs). A region of airspace may be scanned with two scanning apparatuses. Each scanning apparatus may include one or more directional Radio Frequency (RF) antennae. The two scanning apparatuses may have different locations. Radio frequency signals emitted by a UAV can be received at each of the two scanning apparatuses. The received radio frequency signals can be processed to determine a first location of the UAV.

System and method for identifying and tracking 3d location of precast components

A 3-dimensional (3D) precast locating system (100) for identifying and tracking 3D location, that includes ground elevation and geographical location, of a precast, is provided. The system (100) comprises an RFID tag embedded within the precast, a precast lifting machinery (100A) having a hook (108) for lifting the precast, wherein a 3D location of the lifting machinery (100A) is predetermined as a reference, and an RFID reader (109) attached to the lifting machinery (100A) for identifying the precast by operationally reading the RFID tag of the lifted precast. The system (100) further comprises a sensor assembly (121) for detecting an instant 3D location of the hook (108) with reference to the predetermined 3D location of the lifting machinery (100A) and a position translational controller (112) for deriving an instant 3D location of the lifted precast based on the 3D location of the hook (108) detected by the sensor assembly (121), with reference to the predetermined 3D location of the ...

Method and apparatus for estimating angle of arrival

Provided is a method of an angle of arrival (AoA) estimating apparatus. The AoA estimating apparatus may obtain at least two candidate values for an AoA of a received signal, based on a first steering vector. The AoA estimating apparatus may further detect a second steering vector corresponding to a predetermined rotation angle to which the AoA estimating apparatus rotates, and may determine the AoA based on one of the at least two candidate values, with respect to the second steering vector and the predetermined rotation angle.

СПОСОБ ОЦЕНКИ НАПРАВЛЕНИЯ

В способе для оценки направления парциальных волн по меньшей мере одного абонентского сигнала приемному устройству соответствуют приемные датчики числом Ка. Посредством приемных датчиков принимают сигналы числом Ка, состоящие по меньшей мере из одного абонентского сигнала со свойственной ему индивидуальной для каждого передатчика тонкой структурой, причем k-й абонентский сигнал, k=1...К, передают посредством парциальных волн, отличающихся числом Кd по своему направлению (DOA) падения в месте приема. По принятым сигналам определяют соответствующие приемным датчикам числом Ка канальные импульсные ответы, а по канальным импульсным ответам определяют направление падения по меньшей мере одной парциальной волны. Способ может применяться предпочтительным образом в системах мобильной радиосвязи, радарных, сонарных или сейсмических измерительных системах. Техническим результатом является создание усовершенствованного способа оценки направления, который с небольшими затратами на расчеты обеспечивал ...

Antenna apparatus for creating a 2d image

Improvements in or relating to signal communication systems

Shared experiences in panormaic video

DISPOSITIF PERMETTANT DE FAIRE LE POINT A BORD DES NAVIRES EN UTILISANT LES RELEVEMENTS DES AMERS ET DES RADIOPHARES

IL COMPREND UN COMPAS MAGNETIQUE ASSURANT LES FONCTIONS DE COMPAS DE RELEVEMENT ET DE COMPAS INDICATEUR D'ORIENTATION D'UN BOITIER DE FORME APLATIE RENFERMANT LE FERRITE ET SON ELECTRONIQUE, ET SERVANT D'ECRITOIRE. L'ECOUTE S'EFFECTUE A L'AIDE D'UN COMPAS STETHOSCOPIQUE. L'INVENTION PEUT ETRE UTILISEE CHAQUE FOIS QUE L'ON DESIRE CONNAITRE LA POSITION D'UN CORPS MOBILE OU LA DIRECTION D'UN CORPS FIXE.

Dispositif et procédé pour mesurer l'azimut et le site d'un objet

L'invention concerne un dispositif et un procédé pour mesurer l'azimut et le site d'un objet. Le dispositif comprend une plate-forme 1; une plaque de base 2, placée sur la structure de la plate-forme 1 et pouvant tourner dans un plan sensiblement horizontal; un châssis pour capteurs 3 fixé sur la plaque de base 2; au moins trois éléments formant capteurs 4, 5, 6 fixés sur le châssis pour capteurs; et une unité d'électronique pour la commande des éléments formant capteurs 4, 5, 6 capable d'effectuer le traitement des signaux reçus par les capteurs Le dispositif de recherche de direction conforme à l'invention ne perd pas facilement l'objet poursuivi lorsqu'il effectue des mouvements, particulièrement dans le plan de site.

RADIO?FREQUENCY PULSE GENERATION SYSTEM AND METHOD

ELECTROMAGNETIC WAVE VISUALIZATION DEVICE

An electromagnetic wave visualization device comprises: an emission direction separator which changes the emission direction of electromagnetic waves according to the entry direction of the electromagnetic waves; a plurality of sensors which sense the energy of the electromagnetic waves which are emitted from the emission direction separator and respectively output sense signals of intensity corresponding to the size of the sensed energy; a processing unit which is capable of receiving the sense signals from each of the plurality of sensors and which, upon receiving the sense signals from the sensors, queries a table based on location information of the sensors which transmit the sense signals and outputs display signals which include arrival direction information of the obtained electromagnetic waves; and a display unit which is capable of displaying each of the arrival directions of a plurality of electromagnetic waves and which, upon receiving the display signals, displays the arrival ...

METHOD FOR INVESTIGATING THE PROPAGATION OF ELECTROMAGNETIC OR ACOUSTIC WAVES

The invention relates to a technique enabling high-resolution estimation of characteristic propagation parameters of a wave propagation process of electromagnetic waves or sound waves with simultaneous, automatic combination of the parameter tupel based on a database having any given dimension with equidistant sampling while fulfilling the corresponding sampling theorem, wherein decomposition of a single common main component is carried out (22-26) in the computing unit (17) and a single displacement invariance equation is resolved (29). A common control matrix (Ast) is generated from the resulting eigenvector by multiplying the eigenvectors of the signal space (main components/base). Starting parameters are obtained (34) automatically and correctly from the phase progression - measured by blocks of different elements- of said control matrix.

Method, apparatus and computer program for determining the location of a user in an area

Apparatus for orientating a user in a space wherein the space comprises a plurality of zones of which only certain zones constitute functional zones wherein each functional zone includes a first type device containing information relating to the position of the zone in the space and wherein the first type device is reactive to the presence of a second type device associated with the user to provide the user with the information to determine the orientation of the user in the space. A method of orientating the user within the space and guiding the user toward one or more features in the space is also disclosed.

METHOD FOR ACTIVATING A VEHICLE FUNCTION AND ASSOCIATED ACTIVATION DEVICE

A method for activating a vehicle function, by an activation device including a transceiver to communicate with “hands-free” access equipment. The transceiver is equipped with a gyroscope and a magnetometer and two receiving antennas that have a coefficient of electromagnetic coupling between them that is below a threshold. The method includes the following steps for at least two consecutive footsteps: transmission of a signal comprising data of the gyroscope and the magnetometer of the “hands-free” equipment to the vehicle; comparison of the data with representative values of the gyroscope and the magnetometer of the transceiver; determination of a first direction of the user; determination of a second direction of the user based on an estimation of a first angle of arrival of the signal towards the transceiver; comparison of the first direction and the second direction; activation of the vehicle function on the basis of the result of the comparison.

System and method for identifying and tracking 3d location of precast components

A 3-dimensional (3D) precast locating system (100) for identifying and tracking 3D location, that includes ground elevation and geographical location, of a precast, is provided. The system (100) comprises an RFID tag embedded within the precast, a precast lifting machinery (100A) having a hook (108) for lifting the precast, wherein a 3D location of the lifting machinery (100A) is predetermined as a reference, and an RFID reader (109) attached to the lifting machinery (100A) for identifying the precast by operationally reading the RFID tag of the lifted precast. The system (100) further comprises a sensor assembly (121) for detecting an instant 3D location of the hook (108) with reference to the predetermined 3D location of the lifting machinery (100A) and a position translational controller (112) for deriving an instant 3D location of the lifted precast based on the 3D location of the hook (108) detected by the sensor assembly (121), with reference to the predetermined 3D location of the ...

Vorrichtung für ein mobiles Kommunikationssystem und Betriebsverfahren hierfür

Verfahren zum Betreiben einer Vorrichtung für ein wenigstens zwei Kommunikationseinrichtungen aufweisendes mobiles Kommunikationssystem, aufweisend die folgenden Schritte: Ermitteln von Kontextinformationen wenigstens einer Kommunikationseinrichtung, wobei die Kontextinformationen wenigstens eines der nachfolgenden Elemente charakterisieren: eine Position der Kommunikationseinrichtung, eine Orientierung der Kommunikationseinrichtung, eine Bewegung der Kommunikationseinrichtung, wenigstens ein Objekt in der Umgebung der Kommunikationseinrichtung charakterisierende Umgebungsinformationen, wobei das Verfahren weiter den folgenden Schritt aufweist: Ermitteln, in Abhängigkeit der Kontextinformationen, eines Abstands zwischen den wenigstens zwei Kommunikationseinrichtungen und/oder einer relativen Geschwindigkeit der wenigstens zwei Kommunikationseinrichtungen zueinander.

Geo-location of jamming signals

A method of locating a ground based jamming device that emits a signal capable of jamming GPS receivers; the device is found through physically relocating a detector in between three locations and measuring one or more characteristics of the signal at each location, the third location being displaced from the straight line passing through both the first and second locations. The detector may use the measured strength of the jamming signal or the relative time of arrival of the jamming signal to locate the position of the jamming signal. There may be a secondary detector to measure other features of the jamming signal. The detector may be incorporated into an airborne vehicle and may also comprise a step of targeting and destroying the jammer source. The location of the jammer may be represented as a probability of the jammer being in a specified cell, whereby the cells correspond to set areas on the ground. Cells may be discounted if the probability falls below a threshold value.

RADIOFREQUENCY PULSE GENERATION SYSTEM AND METHOD

... 1475365 Radio pulse generation MEGAPULSE Inc 25 Sept 1974 [15 Nov 1973] 41690/74 Heading H4D To generate a pulse of radio frequency energy, in particular a pulse for transmission in a LORAN C navigation system and having a predetermined shape-especially leading edge, two pulse generators 1, 2, Fig. 1, respectively produce a positive half cycle iPG1 and a negative half cycle iPG2 with relative timings such as to combine in a coupling network 3 into a whole cycle, the transfer function of the coupling network 3 and a load (e.g. antenna 4) coupled thereto being such that with impulse excitation of the coupling network 3 the shape of the leading edge of the pulse appearing at the antenna 4 is controlled by the input whole cycle, whilst the shape of the rest of the pulse (not so important in practice) is controlled by said function. The relative timings and amplitudes of the half cycles are controlled in a retroactive fashion by means 7, 8, 9 which also compensate for temperature, humidity & ...

RADIO-FREQUENCY PULSE GENERATION SYSTEM AND METHOD

DEVICE TO EMIT OR RECEIVE WAVES ELECTROMAGNETIQUESMILLIMETRIQUES ABLE TO CREATE A TWO-DIMENSIONAL IMAGE

Phased array beam tracking using beam gain coding

A system for phased array signal beam tracking includes a phased array transmitter configurable for transmitting a signal beam at a selected transmit beam angle from a plurality of different transmit beam angles. The system also includes a beam gain angle coding assembly configured for modulation of a gain of the signal beam to produce a resulting gain profile of the signal beam. The resulting gain profile includes offset angle coding that indicates an offset incident angle of the signal beam at a receiving antenna.

System for detecting, tracking, and reconstructing signals in spectrally competitive environments

A system applicable to acoustic, seismic, electromagnetic, hydrodynamic, and shock waves utilizing a map between signal time series and signal vectors defining the mathematical wave field model characterizing the signal's wave field. This map is developed from wave models relating field values to those on surfaces and corresponding uniqueness theorems. The system should allow for improved resolving power in bearing and elevation for discrimination of sources; detection and direction finding for signals below the average background level; detection based upon resolving power and signal vector characteristics rather than signal to noise ratio; reconstruction of signals of resolved sources for their transmitted information content; and multiple modes of operation. Adaptive incorporation of known undesired signals into the noise background and/or treatment of asymmetric background noise fields is permitted through use of a noise metric-based map yielding signal direction in the presence of ...

Automatic evaluation of navigational bearing angle receiver signals - is for Watson Watt systems with digital display and a correlation technique

The electric network for automatically evaluating receiver information concerning navigational bearing angles, gives a digital display of calculated position. The network represents an improvement on existing calculation methods applied to navigation systems of this kind, which usually involve a cathode ray tube display, typically an ellipse, together with operator interruption to find the required position. The network described incorporates a suitable bearing antenna array, a receiver and a Hilbert transformer (3) which produces signals corresponding to the real and imaginary parts of the bearing information, an analogue to digital converter (4), an angle calculator (5), a store (6), a display (7) and an evaluation unit (8). Treatment of disturbance effects, entails an incremental storage and checking system using the digital store (6), and a correlation technique.

Generating objects in real time panoramic video

Disclosed is a method, including, but not limited to, receiving at least one panoramic video including a panoramic space having at least one object; receiving an environmental map, wherein the environmental map comprises an association of the at least one real object to at least one virtual object; augmenting, using the environmental map, the panoramic video, wherein the augmenting includes: rendering a plurality of real objects contained within the panoramic space; and embedding metadata associated with the virtual object into the panoramic video. Other aspects are described and claimed.

Generating objects in real time panoramic video

PULSE GENERATION SYSTEM

DEVICE AND a METHOD FOR MEASURING the AZIMUTH AND the SITE Of an OBJECT

METHOD FOR JOINT DETERMINATION OF THE DIRECTION OF ARRIVAL AND POLARIZATION OF A SIGNAL

ANGLE OF ARRIVAL ESTIMATION IN A RADIO COMMUNICATIONS NETWORK

There is provided mechanisms for estimating angle of arrival of a radio signal in a radio communications network. A method is performed by a radio transceiver device. The radio transceiver device comprises an antenna array that, by means of analog beamforming, is configured to shift between at least two phase center locations. The method comprises obtaining measurements of the radio signal as received by the antenna array using two mutually different phase center locations. The method comprises estimating the angle of arrival of the radio signal using the measurements as obtained using the two mutually different phase center locations.

Apparatus and method for displaying image data direction of terminal

An apparatus and method for displaying image data direction of a terminal displays direction information in case of displaying an object photographed through a camera installed in a terminal thus to maximize efficiency value of image information and utilize a multiplexing format including direction in an image as a basis data format. To achieve the purpose of the present invention, there is provided an apparatus for displaying image data direction of a terminal in accordance with the present invention comprising a direction sensor for detecting direction of a photographing object in a conventional terminal and a direction displaying apparatus for encoding and packetizing the converted digital direction signal. There is also provided a method for displaying image data direction of a terminal in accordance with the present invention comprising the steps of receiving an image frame from a base station, demultiplexing the received image frame in a multiplexing processing unit and separating ...

IMPROVEMENTS TO ANTENNA SYSTEMS

This invention provides means for incorporating the variation of refractive index with direction of propagation of an electromagnetic wave, which is exhibited by magnetised ferrite materials, within antenna assemblies comprising reflectors, lenses and horn feeds in order to provide enhanced sensitivity of angular discrimination.

IMPROVEMENTS TO ANTENNA SYSTEMS

A dual waveguide assembly 1 has two ends terminated in ferrite films 2 through which a magnetic field is established by two magnets or pole pieces of a single magnet 6, the outputs of the waveguides 4 and 5 being compared in phase and amplitude to provide means of measuring the directivity of the apparatus with respect to electromagnetic radiation incident upon the ferrite surfaces. ...

Method of generating repeated data package transmission

Generating objects in real time panoramic video

COMPACT RADIO MONITORING

The invention concerns radio monitoring systems, and in particular systems performing both spectrum measuring and broadcast locating functions. The invention is characterized in that it consists in a structure assembling all the means required for performing said functions, the whole assembly of means being managed and synchronized by a computer integrated in the device. Said means are mounted in a sealed housing ensuring their protection. The mounting is provided such that said cooling may be only performed by convection. The invention is particularly applicable to portable radio monitoring systems.

APPARATUS AND METHOD FOR MEASURING THE AZIMUTH AND ELEVATION OF AN OBJECT

The present invention concerns an apparatus and method for measuring the azimuth and elevation of an object. The apparatus includes a platform; a base plate arranged to the construction of the platform rotatably in a plane, which is essentially horizontal; a sensor frame attached to the base plate; at least three sensor elements attached to the sensor frame; and an electronics unit for the control of the sensor elements, capable of performing the processing of signals received by the sensors. The sensor frame is rigidly attached to the base plate and the directional pattern of the sensor elements is such as to cover the entire angle span of interest in the elevation plane, while the pattern covers an essentially narrower angle in the azimuth plane. The direction finder does not easily lose the tracked object performing movements particularly in the elevation plane.

METHOD AND SYSTEM TO DIGITALLY TRACK AND MONITOR AN AUTOMOTIVE REFINISH REPAIR PROCESS

A method and a system to digitally track and monitor an automotive refinish repair process of a car within a car body shop is disclosed. The car (110) to be repaired is provided with at least one beacon (111) inside the car (110) and the car body shop (100) is divided into a plurality of function-specific, geo-fenced areas (201, 202), each geo-fenced area (201, 202) being served by at least one communication node (211, 222). The at least one communication node (211, 222) is in communicative connection with a cloud server (310) which provides, based on collected data of the repair process, push reports and/or notifications and/or alerts via a user interface (233).

For a multi-antenna receiver in the antenna between the switching device and associated method

Laying of nautical navigation bearing - uses radio-goniometer with coloured LED indicating presence of beacon signal

APPARATUS AND METHOD FOR CONTROLLING TARGET INFORMATION CALCULATION

The present invention proposes an apparatus and method for controlling information on targets to be calculated based on a technique for decomposing a plurality of adjacent near targets with similar characteristics. The apparatus according to the present invention includes: a matrix calculation unit for calculating a covariance matrix based on digital signals including the information on adjacent targets; an eigen component calculating unit for calculating eigen vectors based on the covariance matrix; and a target information calculating unit for calculating the information on the targets from the digital signals based on the eigen vectors. COPYRIGHT KIPO 2017 (131) Data conversion unit (132) Covariance matrix derivation unit (133) Unique component derivation unit (134) Target information derivation unit (AA) Real value output data (BB) Hilbert transform (CC) Real/image value output data ...

Display apparatus including a transparent electronic monitor

A display apparatus includes a transparent electronic display such as a non-backlit LCD screen, a display area disposed behind the transparent electronic display, and a light source for illuminating the display area. When the light source is activated, the pixels of the LCD screen, and objects behind the screen, become visible. Various examples of the display apparatus include additional enhancements to the visual image and/or functionality. These enhancements include additional monitors for coordinated displays, user-controlled turntables with coordinated informational displays, parallax compensation, RFID sensors for identifying objects to be displayed, and switchable liquid crystal films and/or polarized mirror coatings to further control revealing and concealing of objects behind the screen. Some examples of the display apparatus may include an animal habitat. The animal habitat may be selectively revealed or concealed. The display apparatus may incorporate screen displays with animal ...

Multiple-frequency autotrack feed for wideband communication systems

A travelling wave coupler autotracking system 10 controls the pointing of an antenna aboard an orbiting satellite by generating tracking signals covering a wideband frequency. The system 10 comprises a waveguide manifold 22 for exciting circular TE11 and TM01 modes covering a wideband frequency range, coupling arm waveguides 24, 26 for propagating signals having a phase velocity of TE10 mode that is the same as the phase velocity of TM01 mode, and couplers 30 for transforming microwave energy of the TM01 mode of the circularly polarized microwave signals into TE10 modes in the coupling waveguide. The system 10 can further comprise 180°-hybrid 20 for combining the TE10 modes in the coupling waveguides in phase and for generating one or more error signals at different frequencies.

Electromagnetic Wave Visualizing System

An electromagnetic wave visualizing system includes: an emission direction separation unit; a plurality of sensors, each detecting the energy of an electromagnetic wave emitted from the emission direction separation unit and outputting a sensing signal having strength corresponding to the detected energy; a processing unit capable of receiving the sensing signal from each of the sensors, the processing unit outputting a display signal when receiving the sensing signal from the sensor, the display signal containing information on the arrival direction of an electromagnetic wave with reference to a table based on position information on the sensor having transmitted the sensing signal; and a display unit capable of displaying the arrival directions of electromagnetic waves, the display unit displaying, when receiving the display signal, the arrival direction of an electromagnetic wave based on the electromagnetic wave arrival direction information obtained from the sensor position information ...

Simultaneous radio detection and bearing system

Provided is a simultaneous radio detection and bearing system. More specifically, the radio detection and bearing system includes an RF conditioning subsystem having a plurality of First Frequency Range and Second Frequency Range signal receiving channels. The RF conditioning subsystem operable to combine First Frequency Range and Second Frequency Range signals as a first internal data stream. A coherent multi-channel digitizer subsystem is coupled to the RF conditioning system, the coherent multi-channel digitizer subsystem operable to generate a time domain snapshot of the first internal data stream. An audio recording subsystem is also coupled to the RF conditioning subsystem. A processor is coupled to the coherent multi-channel digitizer subsystem and the audio recording subsystem. The processor is operable to transform the time domain snapshot to a frequency spectrum and identify at least one signal above a threshold at a determined frequency, determine the bearing of the signal, and provide the determined frequency to the audio recording subsystem. The audio subsystem contemporaneously records the signal upon the determined frequency. An associated method of radio detection and bearing determination is also provided.

Acoustic Localization of a Speaker

A system locates a speaker in a room containing a loudspeaker and a microphone array. The loudspeaker transmits a sound that is partly reflected by a speaker. The microphone array detects the reflected sound and converts the sound into a microphone array, the speaker's distance from the microphone array, or both, based on the characteristics of the microphone signals.

SIMULTANEOUS RADIO DETECTION AND BEARING SYSTEM

Provided is a non-transitory machine readable medium on which is stored a computer program including instructions to adapt a computer system having at least one processor as a simultaneous radio detection and bearing system, including: an RF conditioning subsystem for connection to a plurality of arrays of Frequency Range signal receiving channels, the RF conditioning subsystem operable to combine the signals from the arrays as a first internal data stream; and a coherent multi-channel digitizer subsystem coupled to the RF conditioning system, the coherent multi-channel digitizer subsystem operable to generate a time domain snapshot of the first internal data stream. The computer instructions further adapting the processor to transform the time domain snapshot to a frequency spectrum and identify at least one signal above a threshold at a determined frequency, determine the bearing of the signal, and provide the determined frequency of a selected identified signal to an audio recording subsystem, the audio subsystem contemporaneously recording the selected signal upon the determined frequency. 1. A non-transitory machine readable medium on which is stored a computer program comprising instructions to adapt a computer system having at least one processor as a simultaneous radio detection and bearing system , comprising:an RF conditioning subsystem for connection to a plurality of arrays of Frequency Range signal receiving channels, the RF conditioning subsystem operable to combine the signals from the arrays as a first internal data stream; anda coherent multi-channel digitizer subsystem coupled to the RF conditioning system, the coherent multi-channel digitizer subsystem operable to generate a time domain snapshot of the first internal data stream;the computer instructions further adapting the processor to transform the time domain snapshot to a frequency spectrum and identify at least one signal above a threshold at a determined frequency, determine the bearing of ...

Detection of signals

Described herein is a method and apparatus for the detection of signals in an area of interest. Three sensor channels are provided for sensing radiated emissions in an area of interest, each channel having a sensor and a processor, the three channels sensing radiated emissions in the very low frequency band, the high/very high frequency band, and the ultra high frequency band respectively. The first and third sensor channels provide input signals to the processor in the second sensor channel so that accumulated signal data can be processed to produce an input signal for a comparator. The comparator compares the input signal with data stored in a database to indicate presence of equipment having known modes of operation.

System And Method For Identifying And Tracking 3D Location Of Precast Components

A 3-dimensional (3D) precast locating system for identifying and tracking 3D location, that includes ground elevation and geographical location, of a precast, is provided. The system comprises an RFID tag embedded within the precast, a precast lifting machinery having a hook for lifting the precast, wherein a 3D location of the lifting machinery is predetermined as a reference, and an RFID reader attached to the lifting machinery for identifying the precast by operationally reading the RFID tag of the lifted precast. The system further comprises a sensor assembly for detecting an instant 3D location of the hook with reference to the predetermined 3D location of the lifting machinery and a position translational controller for deriving an instant 3D location of the lifted precast based on the 3D location of the hook detected by the sensor assembly, with reference to the predetermined 3D location of the lifting machinery. 1. A 3-dimensional (3D) precast locating system for identifying and tracking 3D location , that includes ground elevation and geographical location , of a precast , wherein the system comprises:an RFID tag embedded within the precast;a precast lifting machinery having a hook for lifting the precast, wherein a 3D location of the lifting machinery is predetermined as a reference;an RFID reader attached to the lifting machinery for identifying the precast by operationally reading the RFID tag of the lifted precast;a sensor assembly for detecting an instant 3D location of the hook with reference to the predetermined 3D location of the lifting machinery; anda position translational controller for holding the predetermined 3D location of the lifting machinery, the position translational controller is operable to derive an instant 3D location of the lifted precast based on the 3D location of the hook detected by the sensor assembly, with reference to the predetermined 3D location of the lifting machinery.2. The 3-dimensional (3D) precast locating system ...

Handling complex signal parameters

Apparatus, the apparatus having at least one processor and at least one memory having computer-readable code stored thereon which when executed controls the at least one processor to perform a method comprising: obtaining in-phase and quadrature samples of a received radio signal at least first and second discrete instances in time; processing the samples to provide information relating to the amplitude and/or phase of the received radio signal at the first and second instances in time; using the amplitude and/or phase information of the received radio signal at the first and second instances in time to determine whether interference is present on the received radio signal; forwarding the complex signal parameters for processing if interference is determined not to be present; and discarding the complex signal parameters without forwarding them for processing if interference is determined to be present.

REAL-TIME RF SIGNAL VISUALIZATION DEVICE

A device provides location information to assist in identifying the location of RF sources. Antenna arrays coupled to corresponding receivers supply signals to a direction of arrival computation block, and the direction information is used to provide a display showing the location of the RF source. 1. An instrument for detecting a direction to a source of RF energy relative to the instrument and indicating the direction to a user , comprising:an antenna;a receiver coupled to the antenna generating a signal indicative of received RF energy from the source of RF energy;an imager for gathering image data from a scene of physical objects and producing a signal indicative thereof;a processor receiving the signal indicative of received RF energy, determining the direction to the RF source based on the signal for a predetermined period of time representative of a time related to the produced image data signal, and combining the direction of received RF energy with image data received from the imager representative of the predetermined period of time;a display coupled to the processor for displaying a direction parameter indicative of the RF direction with respect to the image of the scene corresponding to the predetermined period of time.2. The instrument according to claim 1 , wherein the antenna comprises plural antenna elements claim 1 , each receiving RF energy claim 1 , to form an antenna array.3. The instrument according to claim 2 , wherein the antenna array comprises antenna elements in positions offset from one another.4. The instrument according to claim 3 , wherein the antenna elements are tuned to RF energy at a frequency of approximately 2.4 GHz.5. The instrument according to claim 3 , wherein the antenna elements are tuned to RF energy at a frequency of approximately 5 GHz.6. The instrument according to claim 3 , wherein the antenna elements are tuned to RF energy at a frequency range of approximately 2.4 GHz to 5 GHz or 60 GHz.7. The instrument according to ...

SYSTEM, METHOD AND APPARATUS FOR RADIO FREQUENCY BASED LOCATION AND TRACKING

A method for wirelessly transmitting geographic coordinate information and a system and apparatus implementing the method. The method may include obtaining a latitude coordinate and a longitude coordinate, correlating a first radio frequency to the latitude coordinate, correlating a second radio frequency to the longitude coordinate, transmitting a signal at the first radio frequency, and transmitting a signal at the second radio frequency. 1. A computer program product , in a computer readable medium , for obtaining a frequency value from a decimal geographic coordinate , comprising:instructions for receiving geographic coordinate information; andinstructions for adding an integer to the geographic coordinate information so as to obtain a radio frequency value;wherein the value of the integer is determined based on one or more of the type of geographic coordinate and the hemispherical location of the geographic coordinate.2. The method of claim 1 , wherein the type of geographic coordinate is selected from the group consisting of latitude claim 1 , longitude claim 1 , and elevation.3. The method of claim 1 , wherein the hemispherical location of the geographic coordinate is selected from the group consisting of north of the equator claim 1 , south of the equator claim 1 , east of the prime meridian claim 1 , and west of the prime meridian.4. A method for wirelessly transmitting geographic coordinate information claim 1 , comprising:obtaining a latitude coordinate and a longitude coordinate;correlating a first radio frequency to the latitude coordinate;correlating a second radio frequency to the longitude coordinate;transmitting a signal at the first radio frequency; andtransmitting a signal at the second radio frequency.5. The method of claim 4 , further comprising:obtaining elevation information;correlating a third radio frequency to the elevation information; andtransmitting a signal at the third radio frequency.6. The method of claim 4 , wherein correlating a ...

DIGITAL CUMULATIVE SPECTRUM ANALYSIS APPARATUS AND METHOD FOR DIRECTION FINDING AND LOCATION

A digital spectrum analysis apparatus and method for direction finding (DF) and location is provided. The digital spectrum analysis apparatus includes: a multi-channel unit configured to convert signals inputted from antennas into digital signals, reduce a sampling rate of the digital signals by using a digital down converter (DDC), and convert the digital signals into baseband complex signals, and having a plurality of channels; a DF estimator configured to estimate the direction of the signal; a spectrum processing unit configured to map any one of a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to one of the bearings and the power levels depending on the accumulation ratio of one of the bearing and the power level; and a display unit configured to display the power level and the bearing with colors. 1. A digital spectrum analysis apparatus for multi-channel direction finding , comprising:a multi-channel unit configured to convert signals inputted from antennas into digital signals, reduce a sampling rate of the digital signals by using a digital down converter (DDC), and convert the digital signals into baseband complex signals, and having a plurality of channels of which the number is equal to or less than that of the antennas;a DF estimator configured to estimate the direction of the signal using a predetermined direction finding method;a spectrum processing unit configured to map any one of a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to one of the bearings and the power levels depending on the accumulation ratio of one of the bearing and the power level in order to estimate the bearing of the signal; anda display unit configured to display the power level and the bearing with colors in order to estimate the bearing of the signal.2. The digital spectrum analysis apparatus of claim 1 , wherein the DF pre-processor performs a ...

VARIABLE LISTEN DURATION AND/OR SYNCHRONIZED WAKE-UP OF ASSET TAGS

A method of obtaining information for locating an asset includes: listening, at an asset tag, for a first listen duration for landmark messages; receiving, at the asset tag during the first listen duration, at least one landmark message from each of one or more landmark tags; selecting a synched landmark tag from the one or more landmark tags; abstaining from listening, at the asset tag, for landmark messages until approximately a subsequent transmission time of a synched landmark message corresponding to the synched landmark tag; and waking up at approximately the subsequent transmission time of the synched landmark message to listen, at the asset tag, for landmark messages for a second listen duration such that the asset tag listens for the landmark messages during the subsequent transmission time; wherein the first listen duration is longer than the second listen duration. 1. A method of obtaining information for locating an asset , the method comprising:listening, at an asset tag, for a first listen duration for landmark messages;receiving, at the asset tag during the first listen duration, at least one landmark message from each of one or more landmark tags;selecting a synched landmark tag from the one or more landmark tags;abstaining from listening, at the asset tag, for landmark messages until approximately a subsequent transmission time of a synched landmark message corresponding to the synched landmark tag; andwaking up at approximately the subsequent transmission time of the synched landmark message to listen, at the asset tag, for landmark messages for a second listen duration such that the asset tag listens for the landmark messages during the subsequent transmission time;wherein the first listen duration is longer than the second listen duration.2. The method of wherein the one or more landmark tags comprise a plurality of landmark tags including one or more landmark tags of a first type and one or more landmark tags of a second type claim 1 , and ...

METHOD FOR DETERMINING THE DIRECTION OF ARRIVAL IN PRESENCE OF ALIASING AND ASSOCIATED DEVICE

The invention relates to the method for determining the direction of arrival of radio signals in the presence of aliasing, the method using an interferometric array () with four antennas () with identical diagrams, and sampling by two distinct sampling frequencies per antenna (), the method also comprising, for all of the detected wanted signals: 1. A method for determining the direction of arrival of radio signals in the presence of aliasing , the method using an interferometric array with four antennas with identical diagrams , and sampling by two distinct sampling frequencies per antenna , the aliasing being such that in the time/frequency representation of a signal , the signal being called wanted signal , a maximum of one antenna is affected by an interference phenomenon on its two sampling frequencies , the phenomenon being due to a first external interference , and a second interference being either a second external interference , or an internal interference , the method comprising:the reception of a signal by each antenna,{'sub': 1', '1', '2', '2', '3', '3', '4', '4', '1', '2', '3', '4', '1', '2', '3', '4, 'the sampling of the signals received on each of the four antennas according to two sub-Nyquist frequencies forming the set {f, perm(f); f, perm(f);f, perm(f); f, perm(f)}, where f, f, fand fare four distinct sub-Nyquist frequencies and perm is a permutation of the set {f, f, f, f}, such that the signals received on two distinct antennas are sampled by two distinct pairs of sub-Nyquist sampling frequencies.'}the spectral analysis by application, during a synchronous acquisition period over all of the samplings, of a discrete Fourier transform to obtain 2P time-frequency grids, each element of a grid containing a complex vector called measurement,the detection of the presence or absence of wanted signal at a plurality of frequencies, the method also comprising, for all of the detected wanted signals:the determination of the interference situation for each ...

DRONE ENCROACHMENT AVOIDANCE MONITOR

Disclosed are examples of systems, apparatus, methods and computer program products for locating unmanned aerial vehicles (UAVs). A region of airspace may be scanned with two scanning apparatuses. Each scanning apparatus may include one or more directional Radio Frequency (RF) antennae. The two scanning apparatuses may have different locations. Radio frequency signals emitted by a UAV can be received at each of the two scanning apparatuses. The received radio frequency signals can be processed to determine a first location of the UAV. 1. A method for locating operators of unmanned aerial vehicles (UAVs) , the method comprising:scanning, with a scanning apparatus, a region exterior to the scanning apparatus, the scanning apparatus comprising one or more directional Radio Frequency (RF) antennae;receiving, at the scanning apparatus, radio frequency signals corresponding to an uplink frequency of a UAV, andprocessing, based on an angular relationship between the location of the scanning apparatus and a source of the radio frequency signals, the received radio frequency signals to determine a first location of the source of the radio frequency signals, the source of the radio frequency signals being associated with an operator of the UAV.2. The method of claim 1 , wherein processing the received radio frequency signals to determine the first location of the source of the radio frequency signals comprises:determining a signal strength associated with the radio frequency signals at the scanning apparatus;generating, using the signal strength, first data indicating an angular relationship between the location of the scanning apparatus and the source of the radio frequency signals;processing, using the location of the scanning apparatus, the first data to determine the first location of the source of the radio frequency signals.3. The method of claim 1 , wherein the scanning apparatus is mounted on an aircraft.4. The method of claim 1 , further comprising:disseminating, via ...

RFID ANTENNA ARRAY FOR GAMING

An RFID system includes multiple antennas and uses amplitude and phase information of the RFID signals received by each antenna to determine the position of RFID tags in the vicinity. More than one antenna can receive the RFID signals during a single read cycle, enabling the RFID system to operate more quickly than a system that energizes antennas separately. 1. A system for determining locations of objects in a gaming environment , the system comprising:a plurality of main antennas associated with an area on a gaming table, wherein each of the plurality of main antennas has a “figure 8” shape;a first plurality of antennas oriented in a first direction and associated with the area on the gaming table;a second plurality of antennas oriented in a second direction, wherein the second direction differs from the first direction, wherein the second plurality of antennas overlaps the first plurality of antennas, and wherein the first plurality of antennas and the second plurality of antennas intersect at a plurality of locations within the area;a main radio frequency identification (RFID) transmitter coupled to the plurality of main antennas;an RFID receiver; anda controller that controls the main RFID transmitter to generate an RFID inventory command, wherein each of a plurality of RFID tags in the area responds to the RFID inventory command according to an anti-collision process,wherein in response to the RFID inventory command, the RFID receiver receives a first plurality of responses from the plurality of RFID tags via the first plurality of antennas and a second plurality of responses from the plurality of RFID tags via the second plurality of antennas,wherein the controller determines an identifier for each of the plurality of RFID tags using at least one of the first plurality of responses and the second plurality of responses, andwherein the controller determines a position of each of the plurality of RFID tags by correlating information of the first plurality of ...

Single Channel Interferometer with Optical Delay Lines

Systems and methods are provided in which a direction of arrival of a radio frequency (RF) signal received by a plurality of antennas is determined. A plurality of first converter receives RF signals from the plurality of antennas and outputs a minimum of a first optical signal and a second optical signal each modulated by their corresponding RF signal. A plurality of second converters receives a minimum of the first optical signal via a first optical channel that introduces a first delay and the second optical signal via a second optical channel that introduces a second delay. The second converter outputs a first RF signal that corresponds to the RF modulation on the first optical signal and a second RF signal that corresponds to the RF modulation on the second optical signal. A switch serially receives, from the second converter outputs, the first RF signal and the second RF signal. A direction finding subsystem determines a direction of arrival using a phase difference between the first RF signal and the second RF signal. 1receiving an input RF signal by a plurality of radio frequency (RF) antennas;generating a plurality of antenna signals from the input RF signal by the plurality of RF antennas;converting the plurality of antenna signals to a plurality of optical signals, the plurality of optical signals including a first optical signal and a second optical signal converted from the first antenna signal and the second antenna signal, respectively;converting the plurality of optical signals to a plurality of RF signals each having a respective predefined optical delay, the plurality of RF signals including a first RF signal and a second RF signal, the first RF signal being converted from the first optical signal and having a first optical delay, the second RF signal being converted from the second optical signal and having a second optical delay;determining a phase difference between the first RF signal and the second RF signal; anddetermining a direction of ...

SYSTEM AND METHOD FOR ALERTING AND TRACKING WITH IMPROVED CONFIDENTIALITY

An alarm system comprising at least one first signal source communicating with a central unit configured for providing a logically true alerting signal when predetermined conditions are met. The signal sources may include transponders and a confidential list containing the relation between an RFID chip and the name of the person identified may be stored in a computer. A verification unit is connected to independent signal sources and is configured for providing a logically true verification signal when predetermined conditions are met. The signal sources may also comprise means for measuring bio-functions, and the verification unit may be carried by a safety manager. In such a case, the safety manager will also be able to confirm or reject an alerting alarm from the central unit manually. An alarm signal is activated if and only if the alerting signal is true and the verification signal is true. 1. An alerting and tracking system comprising a central unit configured for providing a logically true alerting signal when predetermined conditions are met ,a verification unit configured for providing a logically true verification signal when predetermined conditions are met,an alarm signal activated if the alerting signal is true and the verification signal is true, the central unit communicating with at least one identity tag associated with a person, the system comprising a second list associating identity tags with personal information, the second list being available only to authorized personnel,wherein the system further comprises means for obtaining a first list of identity tags for unauthorized personnel.2. The system of claim 1 ,wherein the verification unit communicates with at least one second signal source independently of a first signal source.3. The system of claim 1 ,wherein the verification unit transmits the verification signal on manual activation.4. The system of claim 1 ,wherein the verification unit is carried by a safety manager and communicates with ...

Measuring device and measuring method for direction finding and direction uncertainty determination

A measuring device for direction finding of an electromagnetic signal includes an antenna-element for receiving the electromagnetic signal and processing means for determining the direction of the electromagnetic signal and displaying the direction of the electromagnetic signal. The processing means further include direction uncertainty determination means () for determining a direction uncertainty angle of the direction of the electromagnetic signal. The processing means are set up for displaying the direction uncertainty angle on display means.

RFID Antenna Array For Gaming

An RFID system includes multiple antennas and uses amplitude and phase information of the RFID signals received by each antenna to determine the position of RFID tags in the vicinity. More than one antenna can receive the RFID signals during a single read cycle, enabling the RFID system to operate more quickly than a system that energizes antennas separately. 1. A system for determining locations of objects in a gaming environment , the system comprising:a main antenna associated with an area on a gaming table, wherein the main antenna has a “figure 8” shape;a first plurality of antennas oriented in a first direction and associated with the area on the gaming table;a second plurality of antennas oriented in a second direction, wherein the second direction differs from the first direction, wherein the second plurality of antennas overlaps the first plurality of antennas, and wherein the first plurality of antennas and the second plurality of antennas intersect at a plurality of locations within the area;a main radio frequency identification (RFID) transmitter coupled to the main antenna;an RFID receiver; anda controller that controls the main RFID transmitter to generate an RFID inventory command, wherein each of a plurality of RFID tags in the area responds to the RFID inventory command according to an anti-collision process,wherein in response to the RFID inventory command, the RFID receiver receives a first plurality of responses from the plurality of RFID tags via the first plurality of antennas and a second plurality of responses from the plurality of RFID tags via the second plurality of antennas,wherein the controller determines an identifier for each of the plurality of RFID tags using at least one of the first plurality of responses and the second plurality of responses, andwherein the controller determines a position of each of the plurality of RFID tags by correlating information of the first plurality of responses, and information of the second plurality ...

Measuring Angle Of Arrival On A Constant And/Or Pre-Known Part Of A BLE Packet

A system and method are disclosed and include receiving a wireless signal. The method includes generating a first and second set of digital data that are representative of the wireless signal. The method includes obtaining a first and second sample that is representative of a cosine and sine component, respectively, of a pre-known portion of the first set. The method includes obtaining a third and fourth sample that is representative of a cosine and sine component, respectively, of a pre-known portion of the second set. The method includes determining a first phase angle value based on an amplitude of the first and second samples and a second phase angle based on an amplitude of the third and fourth samples. The method includes determining an angle of arrival based on a difference between the first and second phase angle values. 1. A method comprising:receiving, using a plurality of antennas, a wireless signal comprising a packet, wherein the packet includes data with a pre-known portion;generating, using at least one of a transceiver or a microcontroller, (i) a first set of digital data that is representative of the pre-known portion received using a first antenna of the plurality of antennas, and (ii) a second set of digital data that is representative of the pre-known portion received using a second antenna of the plurality of antennas;obtaining, using the microcontroller, (i) a first sample that is representative of a cosine component of the pre-known portion of the first set of digital data, and (ii) a second sample that is representative of a sine component of the pre-known portion of the first set of digital data;obtaining, using the microcontroller, (i) a third sample that is representative of a cosine component of the pre-known portion of the second set of digital data, and (ii) a fourth sample that is representative of a sine component of the pre-known portion of the second set of digital data;determining, using a processor of the microcontroller, (i) a ...

DIRECTION FINDING USING SIGNAL POWER

A method of determining incident angles of Radio Frequency, RF, signals received by an antenna array comprising a plurality of antennae is described. The method comprises generating a plurality of direction finding, DF, signals based on antenna signals received from the antenna array, wherein each DF signal corresponds to a respective antenna array element and each antenna array element corresponds to one or more antennae. A plurality of DF spectra are then generated, each DF spectrum corresponding to a respective DF signal and comprising measured values of signal power at two or more given respective frequencies. An incident signal angle is calculated for each given frequency, based on the measured values of power at the frequency, the configuration of the antennae in the antenna array and antenna gain patterns corresponding to the antenna array elements. 1. A method of determining incident angles of RF signals received by an antenna array comprising a plurality of antennae , the method comprising:generating a plurality of DF signals based on antenna signals received from the antenna array, wherein each DF signal corresponds to a respective antenna array element corresponding to one or more antennae;generating a plurality of DF spectra, each DF spectrum generated by converting a corresponding DF signal into a power spectrum, wherein each DF spectrum comprises measured values of signal power at two or more given respective frequencies; andcalculating an incident signal angle for each given frequency based on the measured values of signal power at the frequency, the configuration of the antennae in the antenna array and antenna gain patterns corresponding to the antenna array elements.2. A method according to claim 1 , wherein each antenna array element has a directionally dependent antenna gain pattern claim 1 , such that each DF signal has a corresponding direction vector determined based on the respective antenna gain pattern claim 1 , wherein calculating an ...

APPARATUS, METHOD AND COMPUTER PROGRAM FOR A MOBILE TRANSCEIVER AND FOR A BASE STATION TRANSCEIVER

An apparatus, method and computer program for a mobile transceiver and for a base station transceiver. The method includes receiving a downlink signal from a base station transceiver of the mobile communication system via a downlink data channel, identifying a line of sight component of at least the first positioning symbol of the downlink signal based on the one or more sequences of zero-value samples and determining information related to a location of the mobile transceiver based on the one or more non-zero-value samples received within the line of sight component of the first positioning symbol. The downlink signal includes one or more positioning symbols having a first positioning symbol, wherein the first positioning symbol is based on samples in a time domain to be transmitted by the base station transceiver. 1. A method for a mobile transceiver for a mobile communication system , the method comprising: wherein a plurality of symbols are received in each slot of the plurality of slots,', 'wherein the downlink signal comprises one or more positioning symbols,', 'wherein the plurality of symbols of at least some slots comprise the one or more positioning symbols,', 'wherein the one or more positioning symbols comprise a first positioning symbol,', 'wherein at least the first positioning symbol is based on a plurality of samples in a time domain to be transmitted by the base station transceiver,', 'wherein the plurality of samples comprises one or more sequences of zero-value samples and one or more non-zero-value samples following the one or more sequences of zero-value samples;, 'receiving a downlink signal from a base station transceiver of the mobile communication system via a downlink data channel, the downlink signal being received using a plurality of slots of the downlink data channel,'}identifying a line of sight component of at least the first positioning symbol of the downlink signal based on processing the one or more non-zero-value samples, wherein ...

Method for measuring signal and electronic device thereof

The present disclosure provides a method for operating a first electronic device. The method includes detecting a movement of the first electronic device, receiving direction information of a second electronic device, and determining an azimuth angle of a heading direction of the first electronic device based on the received direction information of the second electronic device.

METHOD AND APPARATUS FOR PROVIDING A PASSIVE TRANSMITTER BASED SYNTHETIC APERTURE RADAR

A method and apparatus for receiving signals from an unknown transmitting source and providing the location of the unknown transmitting source comprising a series of channels for receiving signals radiated by the unknown transmitting sources, generating preprocessed time domain data and generating a SAR image depicting a location of the unknown transmitting source, and a processor for processing the preprocessed time domain data to enhance a pixel value at each pixel location within the SAR image by summing signal data from each channel related to each pixel location to generate an enhanced SAR image. 1. An apparatus for receiving signals from an unknown transmitting source and providing the location of the unknown transmitting source comprising:a series of channels for receiving signals radiated by the unknown transmitting source, generating preprocessed time domain data and generating a synthetic aperture radar (SAR) image depicting a location of the unknown transmitting source; anda processor for processing the preprocessed time domain data to enhance a pixel value at each pixel location within the SAR image by summing signal data from each channel related to each pixel location to generate an enhanced SAR image.2. The apparatus of wherein the processor selects a brightest pixel in the SAR image as a reference pixel.3. The apparatus of wherein the processor processes the preprocessed time domain data with respect to the reference pixel.4. The apparatus of wherein the processor processes the SAR image using Recursive Sidelobe Minimization.5. The apparatus of wherein each channel in the series of channels comprises:an amplifier for amplifying the received signal in that channel;at least one band pass filter operatively connected to at least one amplifier for selectively allowing passage of a signal within a predetermined frequency band;a mixer configured to combine the filtered received signal with a signal generated by a signal generator to create a combined ...

Radio Frequency Detection and Localization Using Augmented Reality Display

A radiofrequency (RF) localization system can include an RF sensing component, a signal-processing module and a visualization element. A plurality of antennas mounted on a belt, or on a helmet, or at least one extendable antenna attached within a backpack could be used for the RF sensing component. The signal-processing module can receive an RF Signal-of-Interest (SOI), and can further compute localization information for the RF SOI such as line of bearing, signal-to-noise ratio (SNR), and SSID information. The visualization element can be an augmented reality (AR) visor mounted on the helmet, or AR glasses. The signal-processing module can be mounted to the helmet, visor, or glasses, as applicable. The RF sensing component, signal module and said visualization element can be worn by the user, and can cooperate to provide hands free RF localization information in an AR format to an end user. 1. A radiofrequency (RF) localization system , comprising:an RF sensing component for receiving an RF signal of interest (SOI);a signal-processing module, said signal-processing module receiving said RF SOI and computing localization information for said RF SOI;a visualization element for receiving said localization information as an input and displaying said localization information in an end user field of view (FOV); and,said RF sensing component, said signal-processing module and said visualization element being adapted for wearing by said end user, to allow for hands free operation of said RF localization system.2. The system of claim 1 , wherein said RF sensing component further comprises:a helmet; and,a plurality of RF antennas arranged on said helmet as an array to provide omni-directional coverage for reception of said RF SOI.3. The system of claim 1 , wherein said RF sensing component further comprises:a belt; and,a plurality of RF antennas arranged on said belt as an array to provide omni-directional coverage for reception of said RF SOI.4. The system of claim 1 , ...

DRONE ENCROACHMENT AVOIDANCE MONITOR

Disclosed are examples of systems, apparatus, methods and computer program products for locating unmanned aerial vehicles (UAVs). A region of airspace may be scanned with two scanning apparatuses. Each scanning apparatus may include one or more directional Radio Frequency (RF) antennae. The two scanning apparatuses may have different locations. Radio frequency signals emitted by a UAV can be received at each of the two scanning apparatuses. The received radio frequency signals can be processed to determine a first location of the UAV. 1. A method for tracking unmanned aerial vehicles (UAVs) , the method comprising:scanning a region of airspace with two scanning apparatuses, each scanning apparatus comprising one or more directional Radio Frequency (RF) antennae, the two scanning apparatuses having different locations;receiving first radio frequency signals emitted by a first UAV at each of the two scanning apparatuses, a frequency of the first radio frequency signals being a downlink frequency of the first UAV;processing, based on an angular relationship between the locations of the scanning apparatuses and the first UAV, the first radio frequency signals to determine a first location of the first UAV;receiving second radio frequency signals emitted by a second UAV at a first one of the two scanning apparatuses; andtracking both the first UAV and the second UAV.2. The method of claim 1 , wherein processing the first radio frequency signals to determine the first location of the first UAV comprises:determining a signal strength associated with a the first radio frequency signals at each of the scanning apparatuses;generating, using the signal strength, first data indicating an angular relationship between the locations of the scanning apparatuses and the first UAV;processing, using the locations of the scanning apparatuses, the first data to determine the first location of the first UAV3. The method of claim 1 , further comprising:determining a second location of the ...

System and methods for improving secure phase-based positoning accuracy

Techniques by a wireless to estimate the position of a remote device are disclosed. A main receiver of the wireless device may determine multiple first phase values of the RF signal received through a first antenna during multiple time intervals. An auxiliary receiver may determine multiple second phase values of the RF signal received through an array of auxiliary antennas during the multiple time intervals. Each of the second phase value may correspond to the RF signal received through one antenna of the array during one of the time interval. The wireless device may determine an oscillator offset between a local oscillator of the main transceiver and a local oscillator of the auxiliary receiver. The wireless device may estimate an angle of arrival (AoA) of the RF signal or a distance based on the multiple first phase values and the multiple second values by compensating for the oscillator phase offset.

Systems And Methods For Multiantenna Orientation And Direction Detection

Systems and methods are provided to simultaneously determine both angle of arrival (AoA) and angle of departure (AoD) of a signal transmitted between two or more radio frequency (RF)-enabled wireless devices (e.g., such as BLE modules). The disclosed systems and methods may be so implemented in one embodiment to determine AoD even in the case where the transmitting wireless device is at the same time operating in a departure (or AoD) transmitting mode by transmitting a RF signal from multiple antenna elements of at least one switched antenna array using a given switching pattern or sequence implemented by an array switch. 1. A method , comprising:receiving a first wireless signal from a second wireless device at multiple antenna elements of a first wireless device while switching reception between the multiple antenna elements one at a time during at least a portion of a time duration of the reception of the first wireless signal; anddetermining an angle of departure (AoD) of the first wireless signal from the second wireless device based on one or more characteristics of the received first wireless signal.2. The method of claim 1 , where the first wireless signal is transmitted from multiple different antenna elements of the second wireless device during multiple different time slots according to a round-robin sequence that repeatedly cycles through the multiple antenna elements of the second wireless device to transmit from one antenna element of the second wireless device at a time in the same order during each cycle of the sequence; and where the method further comprises switching reception of the first wireless signal between multiple different antenna elements of the first wireless device so that at least one of the antenna elements of the first wireless device receives the first wireless signal from each of the multiple different antenna elements of the second wireless device during separate time slots of the second wireless device during at least a portion ...

Circular polarized angle of arrival measurement system

Methods and systems are disclosed and include receiving, at a plurality of azimuth angles, a signal via a first communication channel and a second signal via a second communication channel. The method includes determining a plurality of first and second communication channel phase angle differences of the antenna system that each correspond to one of the plurality of azimuth angles. The method includes generating a first reference curve and a second reference curve based on the plurality of first and second communication channel phase angle differences, respectively. The method includes determining a first set and a second set of phase difference limits, and for each set, the method includes: identifying a minimum and maximum capping region; determining a minimum phase difference limit based on a central location of the minimum capping region; and determining a maximum phase difference limit based on a central location of the maximum capping region.

MULTIFUNCTION CHANNELIZER/DDC ARCHITECTURE FOR A DIGITAL RECEIVER/EXCITER

A digital receiver includes a digital synthesizer that generates a local oscillating (LO) signal at a selected frequency, and a signal mixer that receives an input signal and generates a mixed output signal in response to shifting a phase of the input signal based on the frequency of the LO signal. A multi-mode dynamic channelizer is selectively operable in a first mode and a second mode. The first mode generates a plurality of individual channels having a channel size defined by a bandwidth and a gain, and the second mode generates a parallelization of a selected channel. In response to operating in the second mode, the multi-mode dynamic channelizer adjusts at least one of the bandwidth and the gain of the selected channel based on the mixed output signal to change the channel size of the selected channel. 1. A digital receiver comprising:a multi-mode channelizer bank including an array of independent multi-mode dynamic channelizers; anda DDC/data packaging controller in signal communication with the multi-mode channelizer bank to receive at least one decimated baseband output signal,wherein the DDC/data packaging controller performs bit packaging and data tagging on the at least one decimated baseband output signal and generates a data signal indicating the bit packaging and data tagging performed on the at least one decimated baseband output signal.2. The digital receiver of claim 1 , wherein the DDC/data packaging controller receives an individual decimated baseband output signal from each independent multi-mode dynamic channelize included in the multi-mode channelizer bank claim 1 , and performs the bit packaging and data tagging on each individual decimated output signal to generate the data signal having additional decimation.3. The digital receiver of claim 2 , further comprising a plurality of multi-mode dynamic channelizers claim 2 , each of the multi-mode dynamic channelizer including an adaptive filter configured to bandpass different frequency channels ...

METHOD FOR THE PASSIVE LOCALIZATION OF RADAR TRANSMITTERS

A method of passive location of radar transmitters implemented by at least two ESM stations, the radars having a quasi-constant scanning speed in the course of the transit over the set comprising at least two ESM stations, each of the ESM stations being able to intercept the transmission lobes of radar transmitters and to estimate their lobe transit times (LTT) and at least one station being able to estimate the angle of arrival α of the transmission lobes, the location of the radar transmitters being performed by testing the intersection between an iso-LTTD curve passing through at least the two ESM stations and a sighting straight line passing through the ESM station having measured the angle of arrival and of azimuth equal to the measured angle of arrival α. 1. A method of passive location of radar transmitters implemented by at least two so-called ESM Electronic Support Measures stations , said radars having a quasi-constant scanning speed in the course of the transit over the set comprising at least two ESM stations , each of said ESM stations being able to intercept the transmission lobes of radar transmitters and to estimate their lobe transit times (LTT) and at least one station being able to estimate the angle of arrival of said transmission lobes , wherein the location of the radar transmitters is performed by testing the intersection between a Lobe Transit Time iso-Difference curve passing through at least the two ESM stations and a sighting straight line passing through the ESM station having measured the angle of arrival and of azimuth equal to said measured angle of arrival.2. The method as claimed in claim 1 , comprising claim 1 , for each ESM station:{'b': '1', 'a step Stp of detecting and tracking lobes of the radar transmitters present in the surveillance field of the ESM station considered,'}{'b': '2', 'a step Stp of estimating, for each intercepted lobe, its angle of arrival (AOA), its lobe transit time (LTT) as well as characteristics of its ...

Electromagnetic Signal Phase Discrimination Using Superconductive Sensors And A Nonlinear Detector

First and second superconductive sensors receive an electromagnetic signal. The first and second superconductive sensors are spaced apart such that there is a phase difference between the electromagnetic signal as received at the first and second superconductive sensors. The first and second superconductive sensors output respective first and second voltage signals corresponding to the electromagnetic signal as received by the first and second superconductive sensors. A nonlinear detector detects a voltage difference between the first and second voltage signals and provides an output signal representing the detected voltage difference. The output signal corresponds to the phase difference between the electromagnetic signal as received at the first and second superconductive sensors. 1. A method , comprising:receiving, by a first superconductive sensor, an electromagnetic signal;receiving, by a second superconductive sensor, the electromagnetic signal, wherein the first and second superconductive sensors are spaced apart such that there is a phase difference between the electromagnetic signal as received at the first superconductive sensor and the electromagnetic signal as received at the second superconductive sensor;outputting, by the first superconductive sensor, a first voltage signal corresponding to the electromagnetic signal as received by the first superconductive sensor;outputting, by the second superconductive sensor, a second voltage signal corresponding to the electromagnetic signal as received by the second superconductive sensor;detecting, by a nonlinear detector, a voltage difference between the first voltage signal and the second voltage signal; andproviding, by the nonlinear detector, an output signal representing the detected voltage difference between the first voltage signal and the second voltage signal that corresponds to the phase difference between the electromagnetic signal as received at the first superconductive sensor and the ...

CONFIGURABLE COORDINATE SYSTEM FOR ANGLE REPORTING FOR POSITIONING

Disclosed are techniques for wireless communication. In an aspect, a base station performs one or more angle-based measurements in a first coordinate system, determines whether to report, to a positioning entity, the one or more angle-based measurements in a local coordinate system (LCS) or a global coordinate system (GCS), and reports the one or more angle-based measurements to the positioning entity in the LCS or the GCS based on the determination. In an aspect, a positioning entity receives, from a base station, one or more angle-based measurements in an LCS of the base station or a GCS, determines whether the one or more angle-based measurements are in the LCS or the GCS, and processes the one or more angle-based measurements based on the determination. 1. A method of wireless communication performed by a base station , comprising:performing one or more angle-based measurements in a first coordinate system;determining whether to report, to a positioning entity, the one or more angle-based measurements in a local coordinate system (LCS) or a global coordinate system (GCS); andreporting the one or more angle-based measurements to the positioning entity in the LCS or the GCS based on the determination.2. The method of claim 1 , wherein the one or more angle-based measurements comprise one or more uplink azimuth angle-of-arrival (AoA) measurements claim 1 , one or more downlink azimuth angle-of-departure (AoD) measurements claim 1 , one or more uplink zenith angle of arrival (ZoA) measurements claim 1 , one or more downlink zenith angle of departure (ZoD) measurements claim 1 , or any combination thereof.3. The method of claim 1 , wherein:the one or more angle-based measurements are of one or more uplink reference signals received at the base station from a user equipment (UE), andthe one or more angle-based measurements represent a direction from the base station to the UE.4. The method of claim 3 , further comprising:receiving, from the positioning entity, an ...

Wearable user-controlled obstacle identification and notification system for hands-free navigation

An obstacle identification and notification system comprised of a wearable item upon which sensor(s) are mounted. The sensor(s) gather information about obstacles in the environment. The sensor(s) are coupled to a microprocessor which analyzes the information transmitted about an obstacle. The microprocessor is coupled to a feedback system The feedback system provides information to the user about the obstacle through tactile, auditory or visual means through a scheduling system. The user may control the feedback system through a user interface element 1. An obstacle identification system adapted to provide obstacle identification vicinity navigation assistance , comprising:a sensor for gathering environmental information from the vicinity of a user,coupled to the sensor, a processing unit, configured to receive said environmental information from the sensor and, when at least one obstacle is present in the vicinity of the user, to generate at least one obstacle distance alert signal, andcoupled to the processor unit, a user interface device, configured to receive said at least one obstacle distance alert signal and to provide obstacle feedback to the user from said at least one obstacle distance alert signal, wherein said system is adapted to be wearable by said user during operation.2. The obstacle identification system of claim 1 , further comprising a wearable item claim 1 , said item being wearable by said user claim 1 , wherein at least one of said sensor claim 1 , said processing unit claim 1 , and said user interface are coupled with said item of apparel.3. The obstacle identification system of claim 2 , wherein said wearable item comprises an item of headwear.4. The obstacle identification system of claim 1 , wherein said sensor comprises a contactless distance sensor and said environmental information comprises obstacle distance information.5. The obstacle identification system of claim 4 , wherein said sensor is configured to determine at least one of ...

AoA/AoD CALCULATION IN THE PRESENCE OF CARRIER FREQUENCY OFFSET

A receiver circuit is disclosed. The receiver circuit includes one or more receiver antennas configured to receive a plurality of RF signals transmitted from a transmitter circuit including one or more transmit antennas, an RF chain configured to generate a plurality of digitized samples of the received RF signals, and a controller configured to receive the digitized samples, to calculate a plurality of additional samples, and to calculate a measured angle of arrival or angle of departure (AoA or AoD) of the RF signals based on the digitized samples and the calculated additional samples. 1. A receiver circuit , comprising:one or more receiver antennas configured to receive a plurality of RF signals transmitted from a transmitter circuit comprising one or more transmit antennas;an RF chain configured to generate a plurality of digitized samples of the received RF signals; anda controller configured to receive the digitized samples, to calculate a plurality of additional samples, and to calculate a measured angle of arrival or angle of departure (AoA or AoD) of the RF signals based on the digitized samples and the calculated additional samples.2. The receiver circuit of claim 1 , wherein the RF signals are either transmitted by first and second transmit antennas of the transmitter circuit or are received by first and second receive antennas of the receiver circuit.3. The receiver circuit of claim 2 , wherein a first set of digitized samples are samples of the RF signals either transmitted by the first transmit antenna of the transmitter circuit or received by the first receive antenna of the receiver circuit claim 2 , and wherein a second set of digitized samples are samples of the RF signals either transmitted by the second transmit antenna of the transmitter circuit or received by the second receive antenna of the receiver circuit.4. The receiver circuit of claim 3 , wherein a first set of additional samples is calculated based on the first set of digitized samples ...

DIRECTION OF ARRIVAL DETERMINATION FOR A RADIO SIGNAL

At least two input signals, each characterizing a radio signal having a radio frequency (RF), are received. The input signals are converted into at least three output signals. The output signals have a unique combination of corresponding magnitudes for each RF phase difference between the input signals. A set of magnitudes corresponding to the output signals is measured using a mobile measuring device. An RF phase angle value is determined based the measured set of magnitudes. The RF phase angle value is converted into an angle value indicative of the direction of arrival of the radio signal. 1. A method for determining the direction of arrival of a radio signal , the method comprising the steps of:receiving at least two input signals each characterizing the radio signal having a radio frequency (RF);converting the at least two input signals into at least three output signals, wherein the at least three output signals have a unique combination of corresponding magnitudes for each RF phase difference between the at least two input signals;measuring a set of magnitudes corresponding to the at least three output signals;determining an RF phase angle value based on the measured set of magnitudes; andconverting the RF phase angle value into an angle value indicative of the direction of arrival of the radio signal.2. The method of claim 1 , wherein measuring a set of magnitudes comprises measuring a set of amplitudes corresponding to the at least three output signals.3. The method of claim 1 , wherein the radio signal comprises a digitally modulated signal.4. The method of claim 1 , wherein the radio signal comprises an unmodulated signal.5. The method of claim 1 , wherein the step of converting the at least two input signals into the at least three output signals is performed by an electronic circuit.6. The method of claim 5 , wherein the electronic circuit comprises:a phase shifting circuit receiving the at least two input signals and generating a first and second ...

DOPPLER MEASURMENTS TO RESOLVE ANGLE OF ARRIVAL AMBIGUITY OF WIDE APERTURE RADAR

A system and method to resolve angle of arrival (AOA) ambiguity in a radar system include receiving received reflections at a plurality of transceiver nodes. Each transceiver node among the plurality of transceiver nodes of the radar system receives one or more of the received reflections at respective one or more receive elements. The method includes determining candidate AOAs {circumflex over (θ)}based on phases differences in the received reflections at the plurality of transceiver nodes, and determining Doppler frequencies fbased on the received reflections. An estimated AOA {circumflex over (θ)} is selected from among the candidate AOAs {circumflex over (θ)}based on matching metrics μbetween the Doppler frequencies and the candidate AOAs {circumflex over (θ)}. 1. A method of resolving angle of arrival (AOA) ambiguity in a radar system , the method comprising:receiving received reflections at a plurality of transceiver nodes, wherein each transceiver node among the plurality of transceiver nodes of the radar system receives one or more of the received reflections at respective one or more receive elements;{'sub': 'i', 'determining candidate AOAs {circumflex over (θ)}based on phases differences in the received reflections at the plurality of transceiver nodes;'}{'sub': 'd', 'sup': 'i', 'determining Doppler frequencies fbased on the received reflections; and'}{'sub': i', 'i', 'i, 'selecting an estimated AOA {circumflex over (θ)} from among the candidate AOAs {circumflex over (θ)}based on matching metrics μbetween the Doppler frequencies and the candidate AOAs {circumflex over (θ)}.'}2. The method according to claim 1 , further comprising developing a matrix A of actual received signals a(θ) claim 1 , wherein each a(θ) is a vector of the actual received signals at each of the one or more receive elements of each of the plurality of transceiver nodes for a given actual AOA θ.4. The method according to claim 3 , wherein the determining the candidate AOAs {circumflex ...

WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION METHOD, AND COMPUTER PROGRAM PRODUCT

According to an embodiment, a wireless communication device includes a detector to detect a mobile object by referring to sensing information; a first communicating unit to communicate mobile object information, which is related to a detection result of the mobile object, with another wireless communication device; a first calculator to calculate a moving path of the mobile object between wireless communication devices by referring to the detection result of the mobile object and mobile object information received from the other wireless communication device; a second communicating unit to communicate movement information, which is related to the moving path of the mobile object, with the other wireless communication device; and a second calculator to calculate distances between wireless communication devices that are dependent on the number of times of movement in the moving path by referring to the calculated moving path and movement information received from the other wireless communication device. 1. A wireless communication device comprising:a detector configured to detect a mobile object by referring to sensing information which is obtained by sensing a surrounding of the wireless communication device;a first communicating unit configured to communicate mobile object information, which is related to a detection result of the mobile object, with another wireless communication device;a first calculator configured to calculate a moving path of the mobile object between wireless communication devices including the wireless communication device by referring to the detection result of the mobile object and mobile object information received from the other wireless communication device;a second communicating unit configured to communicate movement information, which is related to the moving path of the mobile object, with the other wireless communication device; anda second calculator configured to calculate distances between wireless communication devices that are ...

SYSTEM AND METHOD FOR DETERMINING THE RELATIVE DIRECTION OF AN RF TRANSMITTER

The subject matter discloses a method to determine a relative direction of a target RF transmitter, performed by a direction finding (DF) system comprising at least a pair of antennas having an electromagnetic-absorbing material between them, comprising conducting wireless communication between the target RF transmitter and each one of the antennas of the DF system, measuring the signal strength of the target RF transmitter received at each antenna, calculating the difference between the signal strength measured at each one of the antennas in the pair, and determining a relative direction of the target RF transmitter to be is the direction of the antenna within the pair of antennas in which the stronger signal was measured. 1. A method to determine a relative direction of a target RF transmitter , performed by a direction finding (DF) system comprising at least a pair of antennas having an electromagnetic-absorbing material between them , comprising:conducting wireless communication between the target RF transmitter and each one of the antennas of the DF system;measuring the signal strength of the target RF transmitter received at each antenna;calculating the difference between the signal strength measured at each one of the antennas in the pair;determining a relative direction of the target RF transmitter to be is the direction of the antenna within the pair of antennas in which the stronger signal was measured.2. The method of claim 1 , wherein the DF system comprises a plurality of antenna pairs claim 1 , each pair determines the relative direction of the target RF transmitter.3. The method of claim 2 , wherein the relative direction of said target RF transmitter is determined as a combination of the directions determined by the plurality of pair of antennas.4. The method of claim 1 , wherein the electromagnetic-absorbing material is a living matter.5. The method of claim 1 , wherein the electromagnetic-absorbing material is a synthetic material.62. The method of ...

DETERMINING AN ANGLE OF DIRECT PATH OF A SIGNAL

A signal transmitted from a mobile device is received at a device. A change in angle-of-arrival (AoA) of the signal is computed as the mobile device moves from a first location to a second location. A first distance and a second distance of the mobile from the device corresponding to the first and second locations, respectively are computed. A displacement of the mobile device from the first location to the second location is computed based on mobility information provided by a sensor of the mobile device. A change in an angle of direct path (ANDP) of the signal is computed based on the first distance, the second distance, and the displacement. The ANDP is determined based on a comparison of the change in AoA to the change in ANDP. 1. A device comprising:a receiver to receive a signal transmitted from a mobile device when the mobile device is at a first location and a second location; compute a change in angle-of-arrival (AoA) of the signal when the mobile device moves from the first location to the second location;', 'compute a first distance and a second distance of the mobile device to the device corresponding to the first and second locations, respectively;', 'determine a displacement of the mobile device from the first location to the second location based on mobility information provided by a sensor of the mobile device;', 'compute a change in an angle of direct path (ANDP) of the signal based on the first distance, the second distance, and the displacement; and', 'determine the ANDP based on a comparison of the change in AoA to the change in ANDP., 'a signal processing unit to2. The device of claim 1 , wherein a particular AoA that changes between the first and second locations in a substantially similar value as the computed change in ANDP is identified as the ANDP.3. The device of claim 2 , wherein the AoA includes at least one angle of reflected path and the ANDP.4. The device of claim 1 , wherein the first and second distances are computed based on at ...

ESTIMATING A SOURCE LOCATION OF A PROJECTILE

According to examples of the presently disclosed subject matter, there is provided a system for estimating a source location of a projectile, comprising an optics an optics subsystem, a radar subsystem and a processor. The processor is adapted to use range and velocity measurements obtained from data provided by the radar subsystem, a source direction and an event start time obtained from data provided by the optical subsystem and a predefined kinematic model for the projectile for estimating a range to a source location of the projectile. 1. A system for estimating a source location of a projectile , comprising:an optics subsystem;a radar subsystem; anda processor adapted to use range and velocity measurements obtained from data provided by the radar subsystem, a source direction and an event start time obtained from data provided by the optical subsystem and a predefined kinematic model for the projectile for estimating a range to a source location of the projectile.2. The system according to claim 1 , wherein the processor is adapted to take into account predefined operational parameters of the system or of any of its components and/or environmental parameters in order to calculate a certainty range and direction boundaries for the source location.3. The system according to claim 2 , further comprising one or more of the following:a wind-velocity sensor;an air temperature sensor; andan air pressure sensor.4. The system according to claim 1 , wherein the optics subsystem is configured to detect a launch of the projectile claim 1 , and provide to the processor data related to the launch claim 1 , and wherein the processor is configured to obtain the source direction and the event start time from the data relating to the launch.5. The system according to claim 4 , wherein the launch of the projectile is related to and is substantially coincident with an event that has an optical signature which is detectable by the optics subsystem.6. The system according to claim 5 ...

APPARATUS AND METHOD FOR ESTIMATING DIRECTION OF RADIO FREQUENCY SIGNAL

An apparatus and method for estimating the direction of an RF signal is provided. The apparatus includes an antenna for receiving an RF signal. An electronic compass is configured to, as a pointing direction of the antenna is varied, generate information about pointing directions and pointing angles corresponding to variations in the pointing direction of the antenna. A control unit determines RSSI values at respective, pointing angles of the antenna based on a received signal of the antenna and information of the electronic compass depending on the variations, extracts a maximum RSSI value from the RSSI values at respective pointing angles, and stores the maximum RSSI value and a pointing direction corresponding to the maximum RSSI value. A display unit displays the RSSI values at the respective pointing angles and a trajectory of the RSSI values at respective pointing angles under control of the control unit. 1. An apparatus for estimating a direction of a RF signal , comprising:an antenna for receiving an RF signal;an electronic compass for, as a pointing direction of the antenna is varied, generating information about pointing directions and pointing angles corresponding to variations in the pointing direction of the antenna;a control unit for determining RSSI values at respective pointing angles of the antenna based on a received signal of the antenna and information of the electronic compass depending on the variations in the pointing direction of the antenna, extracting a maximum RSSI value from the RSSI values at the respective pointing angles, and storing the maximum RSSI value and a pointing direction corresponding to the maximum RSSI value; anda display unit for displaying the RSSI values at the respective pointing angles and a trajectory of the RSSI values at the respective pointing angles under control of the control unit.2. The apparatus of claim 1 , wherein the display unit displays the RSSI values at the respective pointing angles in a form of one or ...

Systems and Methods for Direction Finding Using Augmented Spatial Sample Covariance Matrices

In an array antenna having a plurality of subarrays, a direction finding system and technique includes receiving signals at an array antenna and capturing data with a plurality of groups of subarrays. Each group of subarrays may capture data during a selected one of a plurality of different dwell times. The method further includes generating a plurality of dwell spatial sample covariance matrices (SCMs) using data corresponding to one or more of the plurality of groups of subarrays and combining the plurality of dwell spatial SCMs in complex form to generate an aggregate covariance matrix (ACM). The ACM may then be used in subsequent processing with MINDIST technique to estimate a direction of a received signal based on the combined data.

Ultrafast target detection based on microwave metamaterials

A system ( 100 ) for locating an object ( 114 ) includes a signal source ( 102 ) that generates a wideband signal ( 104 ) that includes a continuously variable frequency from a first frequency to a second frequency, a microwave metamaterial leaky wave antenna ( 106 ) that receives the wideband signal as an input and maps the wideband signal from the first frequency to the second frequency as electromagnetic radiation that increases as a function of an azimuthal direction ( 108,110,112 ), the microwave metamaterial leaky wave antenna ( 106 ) positionable to face toward an object that is within its field-of-view FOV, wherein the transceiver assembly is positioned to receive the electromagnetic radiation that is reflected from the object and convert the reflected electromagnetic radiation to a reflected electrical signal, and an analyzer ( 118 ) configured to identify a main beam frequency of the reflected electrical signal and determine an azimuthal angle ( 108,110,112 ) and distance to the object based on the main beam frequency.

SYSTEM AND METHOD FOR DETERMINING THE RELATIVE DIRECTION OF AN RF TRANSMITTER

The subject matter discloses a method to determine a relative direction of a target RF transmitter, performed by a direction finding (DF) system comprising at least a pair of antennas having an electromagnetic-absorbing material between them, comprising conducting wireless communication between the target RF transmitter and each one of the antennas of the DF system, measuring the time of flight (TOF) of the target RF transmitter received at each antenna, calculating the difference between the TOFs measured at each one of the antennas in the pair, and determining a relative direction of the target RF transmitter based on the TOF required to reach each of the antennas. 1. A method to determine a relative direction of a target device , performed by a direction finding (DF) system comprising a central unit having a processing module and at least two antennas having an electromagnetic time delaying material between the at least two antennas , the method comprising;e) sending wireless communication from the target device and receiving said wireless communication at each antenna of the at least two antennas of the DF system;f) for each antenna of the at least two antennas, measuring at the DF system the time of flight (TOF) duration of the wireless communication sent from the Target to the DF system;g) having the DF system comparing the measured TOF duration measured for each antenna of the at least two antennas;h) determining a relative direction of the target device relative to the DF system based on the difference of TOF duration required for the signal to travel between the target device and each antenna of the at least two antennas.2. The method of claim 1 , wherein the DF system comprises more than two antennas claim 1 , wherein at least two antennas are assigned to pairs of antennas having electromagnetic time delaying material between the antennas in the pair.3. The method of claim 2 , wherein the relative direction of said target wireless transmitter is determined ...

AoA/AoD CALCULATION WITH LOW ANGLE OF INCIDENCE

One inventive aspect is a receiver circuit. The receiver circuit includes a controller selecting a receiver antenna array and/or a transmit antenna array. The controller also calculates a first AoA and/or a first AoD based on signals from the selected receiver and/or transmit antenna array. The controller also, in response to the absolute value of the first AoA minus π/2 not being less than or equal to the AoA threshold angle, selects a different receiver antenna array, and calculates a second AoA based on digitized samples of RF signals from the selected different receiver antenna array. The controller also, in response to the absolute value of the first AoD minus π/2 not being less than or equal to the AoD threshold angle, selects a different transmit antenna array, and calculates a second AoD based on digitized samples of RF signals from the selected different transmit antenna array. 1. A receiver circuit , comprising:one or more receiver antennas or one or more receiver antenna arrays configured to receive a plurality of RF signals transmitted from a transmitter circuit comprising one or more transmit antennas or one or more transmit antenna arrays;one or more RF chains configured to generate a plurality of digitized samples of the received RF signals; and{'claim-text': ['calculate a first angle of arrival (AoA) based on digitized samples of RF signals from the selected particular receiver antenna array, and', 'calculate a first angle of departure (AoD) based on digitized samples of RF signals from the selected particular transmit antenna array,'], '#text': 'a controller configured to select at least one of a particular receiver antenna array and a particular transmit antenna array, and to at least one of:'}{'claim-text': ['determine whether the absolute value of the first AoA minus π/2 is less than or equal to an AoA threshold angle, and', 'determine whether the absolute value of the first AoD minus π/2 is less than or equal to an AoD threshold angle,'], '#text ...

RECEPTION DEVICE

A reception device according to an embodiment in a system that performs wireless communication while switching a frequency channel includes a channel selecting unit, a generation unit, and a determination unit. The channel selecting unit converts a received signal of the frequency channel into a channel signal of an intermediate frequency. The generation unit generates a received channel number in a predetermined scheme. The determination unit determines whether or not to save a signal used for azimuth estimation in a storage unit from the channel signal. 1. A reception device in a system that performs wireless communication while switching a plurality of frequency channels , the reception device comprising:a channel selecting unit configured to convert at least one received signal of the frequency channels into a channel signal of an intermediate frequency;a generation unit configured to generate at least one received channel number in a predetermined scheme; anda determination unit configured to determine whether or not to save a signal used for azimuth estimation in a storage unit from the channel signal based on the received channel number.2. The reception device according to claim 1 , wherein the channel selecting unit converts a received signal selected in accordance with the received channel number from the generation unit into the channel signal.3. The reception device according to claim 2 , wherein the determination unit outputs a command for saving the signal used for azimuth estimation in the storage unit in a case in which the received channel number of the channel signal is separated from a received channel number of a received signal received in the past by a predetermined number.4. The reception device according to claim 1 , comprising:an extraction unit configured to extract the signal used for azimuth estimation from the channel signal.5. The reception device according to claim 1 , comprising:an azimuth estimation unit configured to perform azimuth ...

Methods and Systems for Determining a Direction of Arrival of a Radar Detection

A computer implemented method for determining a direction of arrival of a radar detection comprises the following steps carried out by computer hardware components: acquiring a complex-valued beamvector of the radar detection; processing the complex-valued beamvector by a machine learning module in the complex domain; and obtaining the direction of arrival as an output of the machine learning module.

Angle of Arrival Using Machine Learning

A system and method of determining the angle of arrival or departure using a neural network is disclosed. The system collects a plurality of I and Q samples as a packet containing a constant tone extension is being received. The I and Q samples are used to form I and Q arrays, which are used as the input to the neural network. The neural network produces a first output representative of the azimuth angle and a second output representative of the elevation angle. In certain embodiments, the neural network is capable of detecting a plurality of angles, where, for each angle, there are three outputs, a first output representative of the azimuth angle, a second output representative of the elevation angle and a third output representative of the relative amplitude. In some embodiments, the neural network is configured to determine the carrier frequency offset of an incoming signal as well.

METHOD FOR PRODUCING A DIRECTION-FINDING ANTENNA ARRAY AND ANTENNA ARRAY PRODUCED ACCORDING TO SUCH A METHOD

A method for manufacturing a radio-direction-finding antenna array in two dimensions includes a step of designing the antenna array with the help of predetermined constraints, the designing step comprising: a step of defining a reference antenna network, a step of searching for configurations to be taken into consideration of each of the antennas forming a direction-finding antenna array, a step of quantifying the maximum level of ambiguities of each of the possible configurations with the help of a correlation function so as to associate an evaluation quantity with each of the configurations considered, a step of searching for and selecting the configuration exhibiting the lowest evaluation quantity. 1. A method for manufacturing a direction-finding antenna array in two dimensions comprising at least three antennas , wherein comprising a phase of determining the optimal configuration of said array from among a list of possible configurations , a configuration being defined by the gain , the direction of pointing and the position within said array of each of said antennas , said phase comprises at least:a step of defining a reference antenna network, said network covering a surface having a dimension in elevation and/or in bearing inversely proportional respectively to a level of precision required in elevation and/or in bearing for the estimation of the directions of arrival of the incident waves, and comprising a plurality of elementary antennas, said elementary antennas being distributed according to a regular mesh, the distance separating two contiguous elementary antennas being substantially equal to the half-wavelength associated with the maximum frequency of a span of frequencies of interest, the number of antennas of said network being greater than the number of antennas of said array, the spacing between the extreme antennas of said network being greater than or equal to the spacing between the extreme antennas of said array along the bearing axis and/or ...

Multiport df antennas and df systems

A multi-port antenna and associated systems having extremely wide bandwidth and capable of maintaining directivity as frequency decreases and is made arbitrarily low, allowing DF systems to operate to arbitrarily low frequency regardless of size. Construction may be rugged, lightweight, and low cost, allowing reliable service in harsh environments. The systems allow utilization of both the E and H fields occupying a common area of space. The disclosed DF system takes advantage of knowledge of the as-installed array manifold, uses pattern matching to determine the angle of arrival (AoA) of incoming waves, and enhances sensitivity by using integration on cross-correlation products between the multiple ports to achieve SNR improvement.

SYSTEM FOR AND METHOD OF ESTIMATING BEARINGS OF RADIO FREQUENCY IDENTIFICATION (RFID) TAGS THAT RETURN RFID RECEIVE SIGNALS WHOSE POWER IS BELOW A PREDETERMINED THRESHOLD

An RFID tag reading system and method estimate bearings of RFID tags. When the RSSI of a primary and/or secondary RFID receive signal is below a threshold, a primary receive beam is steered in a limited scan to an array of locations distributed around the location at which the RSSI of the primary receive signal is a maximum, and the RSSI of the primary receive signal is recorded at each location. The recorded RSSIs are processed to determine an effective weighted center of distribution of the recorded RSSIs, and the bearing for the tag based on the weighted center of distribution is thus estimated. 1. A radio frequency (RF) identification (RFID) tag reading system for estimating a bearing of an RFID tag associated with an item in a controlled area having sectors , comprising:an RFID reader having a plurality of antenna elements, and a plurality of RF transceivers; anda controller operatively connected to the transceivers, and operative for controlling the transceivers by executing a tag processing module operative for steering a primary transmit beam in the controlled area by transmitting a primary transmit signal via the antenna elements to the tag, and for steering a primary receive beam in the controlled area at a primary steering angle by receiving a primary receive signal via the antenna elements from the tag,the controller being further operative for controlling the transceivers by executing a bearing processing module operative for steering a plurality of secondary receive beams in the controlled area at respective secondary steering angles that are offset from the primary steering angle by receiving a plurality of secondary receive signals via the antenna elements from the tag,the controller being further operative for steering the primary receive beam to a plurality of locations of a sector in the controlled area in a coarse scan to find the tag, for steering the secondary receive beams to the found tag, for comparing a receive signal strength indicator ( ...

TRACKING SYSTEM AND METHOD

A method, computer program product, and computing system for receiving IR-based location information and RFID-based location information for each of a plurality of RFID/IR tags that are associated with and configured to be releasably attached to a plurality of medical staff within a medical facility. Position information is generated concerning each of the RFID/IR tags within the medical facility. 1. A computer-implemented method comprising:receiving IR-based location information and RFID-based location information for each of a plurality of RFID/IR tags that are associated with and configured to be releasably attached to a plurality of medical staff within a medical facility; andgenerating position information concerning each of the RFID/IR tags within the medical facility.2. The computer-implemented method of further comprising:associating time stamp information with the IR-based location information and the RFID-based location information received for each of the plurality of RFID/IR tags; andgenerating time-based movement information concerning each of the RFID/IR tags within the medical facility.3. The computer-implemented method of further comprising:determining a time/proximity based level of performance for at least one medical staff, chosen from the plurality of medical staff.4. The computer-implemented method of wherein the time/proximity based level of performance is based claim 3 , at least in part claim 3 , upon:the IR-based location information received for the RFID/IR tag associated with the at least one medical staff;the RFID-based location information received for the RFID/IR tag associated with the at least one medical staff; andthe time stamp information associated with the IR-based location information and the RFID-based location information received for the RFID/IR tag associated with the at least one medical staff.5. The computer-implemented method of wherein the time/proximity based level of performance concerns one or more of:the quantity of ...

METHOD AND APPARATUS FOR RECORDING LOCATION SPECIFIC ACTIVITY OF A USER AND USES THEREOF

A method and an apparatus for recording information is disclosed. A user is identified based on a user ID. The user is tracked based on the user ID and a determined present location. User metadata is tagged at the identified present location. User presence at the present location is recorded. 1. A method for recording information , the method comprising:identifying a user based on a user ID;tracking the user based on the user ID and a determined present location;tagging user metadata at the identified present location; andrecording user presence at the present location.2. The method of claim 1 , further comprising:determining whether a location of the user has changed; andstoring the recording in response to a determination that the user the location of the user has changed.3. The method of claim 1 , wherein the user ID is stored in an RFID tag.4. The method of claim 1 , wherein tagging user metadata at the identified present location comprises updating a plurality of data tables based on the present location.51. The method claim 1 , further comprising customizing the recording based on at least one user preference.6. A method for generating throughput information for a user of a mobile device claim 1 , receiving a request for end-to-end throughput information;', 'in response to the request, retrieving information on end-to-end throughput values associated with at least one access point at a plurality of locations relative to the access point;', 'comparing an end-to-end throughput value at a current location to throughput values at the plurality of locations; and', 'providing the user with one of a visual heat map and movement directions, wherein the retrieved end-to-end throughput information includes at least one reading from the mobile device or from another mobile device via a mobile-to-mobile communications link., 'the method comprising7. The method of claim 6 , wherein the retrieved information on end-to-end throughput values is associated with a plurality of ...

RADIO WAVE INCOMING DIRECTION ESTIMATION APPARATUS, ARRAY ANTENNA, RADIO WAVE INCOMING DIRECTION ESTIMATION METHOD

A radio wave incoming direction estimation apparatus according to an aspect of the present invention estimates an incoming direction of an incoming radio wave reaching an array antenna apparatus including a plurality of antennas. The radio wave incoming direction estimation apparatus includes a virtual current calculator, and an incoming direction estimator. The virtual current calculator calculates a virtual current at each antenna from a received current that is generated at each of the antennas by the incoming radio wave on the basis of data indicating a relationship between supplied power to each of the antennas and a current that is generated at each of the antennas by the supplied power. The incoming direction estimator estimates the incoming direction of the incoming radio wave on the basis of the virtual current at each of the antennas. 1. An apparatus for estimating an incoming direction of an incoming radio wave reaching a plurality of antennas , comprising:a virtual current calculator configured to calculate a virtual current at each antenna from a received current that is generated at each of the antennas by the incoming radio wave on the basis of data indicating a relationship between supplied power to each of the antennas and a current that is generated at each of the antennas by the supplied power; andan incoming direction estimator configured to estimate the incoming direction of the incoming radio wave on the basis of the virtual current at each of the antennas.2. The apparatus according to claim 1 , wherein the virtual current refers to a transformed current at one selected antenna among the antennas claim 1 , when performing numerical transformation on the received currents at the antennas such that the received currents at antennas other than the one selected antenna become zero.3. The apparatus according to claim 1 , wherein each of the current that is generated at each of the antennas by the supplied power is measured at around a center in a ...

SYSTEMS FOR AND METHODS OF PROVIDING INDICATORS USEFUL FOR PILOTING AN AIRCRAFT

The present disclosure provides a computer implemented method of providing an indicator useful for piloting an aircraft. The aircraft comprises an antenna configured to communicate with a transceiver. The method comprises: obtaining an antenna envelope characterizing directions relative to the aircraft for which a directive gain of the antenna exceeds a predetermined threshold; determining a direction of the transceiver relative to the aircraft; calculating a maneuvering range of the aircraft by comparing the antenna envelope and the transceiver direction, wherein the maneuvering range is indicative of eligible orientations of the aircraft for maintaining the transceiver within the antenna envelope; and outputting data indicative of the maneuvering range. 1. A computer implemented method of providing an indicator useful for piloting an aircraft , the aircraft comprising an antenna configured to communicate with a transceiver , the method comprising:obtaining an antenna envelope characterizing directions relative to the aircraft for which a directive gain of the antenna exceeds a predetermined threshold;determining a direction of the transceiver relative to the aircraft;calculating a maneuvering range of the aircraft by comparing the antenna envelope and the transceiver direction, wherein the maneuvering range is indicative of eligible orientations of the aircraft for maintaining the transceiver within the antenna envelope; andoutputting data indicative of the maneuvering range.2. The method according to claim 1 , wherein when the transceiver direction is out of the antenna envelope claim 1 , the maneuvering range is empty.34-. (canceled)5. The method according to claim 1 , wherein the predetermined threshold is variable with respect to a direction relative to the aircraft.69-. (canceled)10. The method according to claim 1 , wherein the data indicative of the maneuvering range comprises roll and/or pitch variation maximum values to maintain the transceiver within the ...

System and method for a digitally beamformed phased array feed

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

SYSTEM AND METHOD FOR A DIGITALLY BEAMFORMED PHASED ARRAY FEED

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers. 1. A method comprising: i. receiving, by the digital software system via a pedestal controller operatively connected to a first parabolic reflector, first angular direction information comprising a first azimuth axis component and a first elevation axis component associated with the first parabolic reflector;', 'wherein each respective partial beam of the first plurality of partial beams is associated with a respective first digital data stream and data in the respective first digital data stream is associated with a first plurality of respective modulated radio frequency signals received by a plurality of antenna array elements;', 'ii. receiving, by the digital software system via a data transport bus, a first set of respective first digital data streams associated with a first plurality of partial beams,'}, 'iii. processing, by the digital software system, the first set of respective first digital data streams associated with the first plurality of partial beams to generate a second set of respective second digital data streams associated with the first plurality of beams, wherein each beam of the first plurality of beams is based on at least two respective first digital data streams;', 'iv. processing, by the digital software system, the second set of respective second digital data streams associated with the first plurality ...

SYSTEM AND METHOD FOR A DIGITALLY BEAMFORMED PHASED ARRAY FEED

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers. 1. A large form-factor phased array system comprising a plurality of multi-band software defined antenna array tiles wherein each multi-band software defined antenna array tile comprises:i. a plurality of coupled dipole array antenna elements, wherein each coupled dipole array antenna element includes a principal polarization component oriented in a first direction and an orthogonal polarization component oriented in a second direction, and is configured to receive and transmit a plurality of respective first modulated signals associated with a plurality of respective radio frequencies; (1) receive respective first modulated signals associated with the respective radio frequencies of the plurality of radio frequencies from the respective coupled dipole array antenna element; and', '(2) convert the respective first modulated signals associated with the respective radio frequencies of the plurality of radio frequencies into respective second modulated signals having a first intermediate frequency;, 'ii. a plurality of pairs of frequency converters, each pair of frequency converters associated with a respective coupled dipole array antenna element and comprising a respective principal polarization converter corresponding to a respective principal polarization component and a respective orthogonal polarization converter ...

RADIO WAVE ARRIVAL DIRECTION ESTIMATION APPARATUS

Two antennas receive three kinds of radio waves with different frequencies. A computation unit determines the arrival direction of the three kinds of radio waves arriving at the two antennas after propagating along two mutually different paths from a single transmit point in accordance with receive signals of the three kinds of radio waves with different frequencies received individually by the two antennas. 1. A radio wave arrival direction estimation apparatus comprising:a first antenna and a second antenna, each of the first and second antennas being configured to receive a first radio wave, a second radio wave, and a third radio wave, each of the first, second, and third radio waves having different frequencies; anda processor configured to determine an arrival direction of the first, second, and third radio waves arriving at each of the first and second antennas,wherein each of the first, second, and third radio waves propagate along a first path to each of the first antenna and the second antenna, and along a second path to each of the first antenna and the second antenna,wherein the first path and the second path are mutually different paths from a single transmit point.2. The radio wave arrival direction estimation apparatus according to claim 1 , wherein the processor is configured to claim 1 , for each of the first claim 1 , second claim 1 , and third radio waves received by each of the first and second antennas:convert each of the first, second, and third radio waves into two complex signals;compute a product of a complex conjugate of the corresponding two complex signals;compute a quotient of the corresponding two complex signals; anddetermine the arrival direction based on the corresponding product and the corresponding quotient.3. The radio wave arrival direction estimation apparatus according to claim 2 , wherein the processor is configured to:compute an approximation of a straight line by using a first set of three points on a complex plane and a ...

System and method for a digitally beamformed phased array feed

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

System and method for a digitally beamformed phased array feed

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

SYSTEM AND METHOD FOR A DIGITALLY BEAMFORMED PHASED ARRAY FEED

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers. 1. A method comprising: i. receiving, by the digital software system via a pedestal controller operatively connected to a first parabolic reflector, first angular direction information comprising a first azimuth axis component and a first elevation axis component associated with the first parabolic reflector;', 'wherein each respective partial beam of the first plurality of partial beams is associated with a respective first digital data stream and data in the respective first digital data stream is associated with a first plurality of respective modulated radio frequency signals received by a plurality of antenna array elements;', 'ii. receiving, by the digital software system via a data transport bus, a first set of respective first digital data streams associated with a first plurality of partial beams,'}, 'iii. processing, by the digital software system, the first set of respective first digital data streams associated with the first plurality of partial beams to generate a second set of respective second digital data streams associated with the first plurality of beams, wherein each beam of the first plurality of beams is based on at least two respective first digital data streams;', 'wherein the first object movement information comprises a first object angular velocity and a first object angular direction, and wherein the ...

Electronic apparatus, angle estimation system, and signal processing method

According to one embodiment, an electronic apparatus includes processing circuitry. The processing circuitry estimates a first AoA of an arrival wave corresponding to a received signal from a receiving element array. The processing circuitry determines whether the estimated first AoA is an outlier or not. The processing circuitry outputs the first AoA as a second AoA, when the first AoA is not to be an outlier. The processing circuitry acquires one or more main-lobe angles assuming that the first AoA is a side-lobe angle of the receiving element array, when the first AoA is to be an outlier. The processing circuitry determines whether the main-lobe angle is an outlier or not. The processing circuitry outputs the main-lobe angle as the second AoA, when the main-lobe angle is not to be an outlier.

ANGLE OF ARRIVAL DETECTION SYSTEM AND METHOD

An apparatus comprising a plurality of receivers, a controller and memory storing instructions executable by the controller, the instructions, when executed by the controller causing the controller to receive data of signals received via the receivers as a signal from a transmitter, to segment the received data into a plurality of consecutive segments, to determine if consecutive data segments have changed in a manner indicative of movement of the transmitter and to, based on the determination, determine an angle of arrival of the signal based on data segments that have solely been received before or that have solely been received after a detected change in consecutive data segments indicative of movement of the transmitter or that have been received between two detected changes in consecutive data segments indicative of movement of the transmitter. 1. An apparatus comprising a plurality of receivers , a controller and memory storing instructions executable by the controller , the instructions , when executed by the controller causing the controller to:receive data of signals received via the receivers as a signal from a transmitter;segment the received data into a plurality of consecutive segments;determine if consecutive data segments have changed in a manner indicative of movement of the transmitter;based on the determination, determine an angle of arrival of the signal based on data segments that have solely been received before or that have solely been received after a detected change in consecutive data segments indicative of movement of the transmitter or that have been received between two detected changes in consecutive data segments indicative of movement of the transmitter.2. An apparatus according to claim 1 , wherein the instructions claim 1 , when executed by the controller claim 1 , further cause the controller to determine a segment length for segmenting the received data based on a position change frequency associated with the transmitter.3. An ...

RFID Antenna Array For Gaming

An RFID system includes multiple antennas and uses amplitude and phase information of the RFID signals received by each antenna to determine the position of RFID tags in the vicinity. More than one antenna can receive the RFID signals during a single read cycle, enabling the RFID system to operate more quickly than a system that energizes antennas separately.

METHOD AND DEVICE FOR ESTIMATING AN ANGLE OF ARRIVAL OF AN INCIDENT RADIO SIGNAL

The invention relates to a method and a device for estimating an angle of arrival of an incident radio signal in relation to a predetermined reference direction by using a set of N receiving paths comprising at least one directional antenna pointing in N different receiving directions, wherein only one sub-set of at least two receiving paths with adjacent antenna directions in said set of antennas delivers a measured power at reception. 1. An angle estimation method for estimating an angle of arrival of an incident radio signal in relation to a predetermined reference direction , by using a set of N receiving paths comprising at least one directional antenna pointing in N different receiving directions , wherein only a sub-set of at least two receiving paths with adjacent antenna directions in the set of antennas delivers a measured power at reception of the incident radio signal , the method comprising:determining a number of receiving paths delivering a measured power forming the sub-set, and a reference index corresponding to a first receiving path in a direction in which extends the set of antenna directions of the sub-set;selecting the measured powers and obtaining of a value to be attributed to the non-measured powers to form a completed power signal with N samples;calculating, by applying a discrete Fourier transform to the completed power signal, at least one transformed value from among the transformed values corresponding to a first, second, and third frequency line of the discrete Fourier transform, the first frequency line corresponding to the zero frequency; andapplying an estimator of the angle of arrival using the calculated transformed value or values, the estimator being dependent on the reference index.2. An angle estimation method according to claim 1 , wherein the value to be attributed to the non-measured powers is a non-zero value claim 1 , depending on the indices of the receiving paths of the sub-set and the corresponding measured powers.3. ...

Methods, Systems, and Devices for Determining a Presence of a Motor-Driven Tool Inside a Tool Position Region and/or a Tool Position of the Tool

A method determines a presence of a motor-driven tool inside a tool position region and/or a tool position of the tool. A transmitter is mechanically connected to the tool, wherein the transmitter wirelessly transmits a signal. The transmitted signal is attenuated by the tool and has an item of transmitter information for taking the attenuation into account. The method has the steps of: capturing a respective reception signal strength value of the transmitted signal at receivers, wherein the receivers are arranged at different receiver positions; and determining the presence of the tool inside the tool position region and/or the tool position of the tool on the basis of the captured reception signal strength values and the received transmitter information for taking the attenuation into account. 1. A method for determining a presence of a motor-driven tool inside a tool position region and/or a tool position of the tool , wherein a transmitter is mechanically connected to the tool , wherein the transmitter wirelessly transmits a signal , wherein the transmitted signal is attenuated by the tool and has an item of transmitter information for taking the attenuation into account ,the method comprising the steps of:a) capturing a respective reception signal strength value of the transmitted signal at receivers, wherein the receivers are arranged at different receiver positions; andb) determining the presence of the tool inside the tool position region and/or the tool position of the tool on the basis of the captured reception signal strength values and the received transmitter information for taking the attenuation into account.2. The method according to claim 1 ,wherein the tool has a drive motor system, andwherein the transmitted signal is attenuated by the drive motor system.3. The method according to claim 1 ,wherein the transmitted signal is a radio signal, and/orwherein the transmitted signal is attenuated anisotropically by the tool.4. The method according to ...

METHOD AND APPARATUS TO VISUALIZE LOCATIONS OF RADIO FREQUENCY IDENTIFICATION (RFID) TAGGED ITEMS

Methods and apparatus to visualize locations of radio frequency identification (RFID) tagged items are described. One example method includes receiving a request from a portable electronic device to access product information associated with an individual radio frequency identification (RFID) tagged item, determining a location of the product information in a database, transmitting the located product information to the portable electronic device for display thereon, receiving modified product information associated with the individual RFID tagged item from the portable electronic device, and storing the modified product information to the location of the product information in the database. 1. A method , comprising:processing, by a processor of a portable electronic device, a plurality of received radio frequency waves to determine a location of a radio frequency identification tagged item, where the location of the radio frequency identification tagged item is determined from an angle of each of the plurality of received radio frequency waves, wherein the portable electronic device comprises an eyewear; andtransmitting the location of the radio frequency identification tagged item via the processor of the portable electronic device to a database.2. The method of claim 1 , wherein the location comprises a distance and a lateral position.3. The method of claim 2 , wherein the location is further determined from a time delay of each of the plurality of received radio frequency waves.4. The method of claim 2 , wherein the location is further determined from an amplitude change of each of the plurality of received radio frequency waves.5. The method of claim 2 , wherein the location is further determined from a second angle of a second radio frequency wave for a second radio frequency identification tagged item.6. The method of claim 1 , further comprising:receiving product information at the processor of the portable electronic device, wherein the product information ...

POWERING UNPOWERED OBJECTS FOR TRACKING, AUGMENTED REALITY, AND OTHER EXPERIENCES

A mechanism is described for facilitating powering of unpowered objects for tracking, augmented reality, and other experiences according to one embodiment. A method of embodiments, as described herein, includes scanning, by a scanner of a computing device, an object, where the object includes an unpowered object, and where the scanner is further to detect a smart tag at the object. The method may further include providing power, by the computing device, to the object, where the power is provided via the smart tag at the object, where providing power includes initiating an output from the object to enable performing of location tracking of the object, where the output is received by the computing device. The method may further include rendering an augmented reality (AR) experience involving the object, where the AR experience is based on the output. 1. An apparatus comprising:a scanner to scan, via scanning and powering logic, an object, wherein the object includes an unpowered object, and wherein the scanner is further to detect, via detection/reception logic, a smart tag at the object;the scanning and powering logic to provide power to the object, wherein the power is provided via the smart tag at the object, wherein the scanning and powering logic is further to initiate an output from the object to enable data stream coordination and tracking logic to perform location tracking of the object, wherein the output is received by the detection/reception logic; andaugmented reality (AR) logic to render an AR experience involving the object, wherein the AR experience is based on the output.2. The apparatus of claim 1 , wherein the output comprises at least one of a video output or an audio output to allow response and application logic to access a database to match the object with contents at the database to retrieve supplemental information regarding video characteristics and audio characteristics claim 1 , respectively claim 1 , of the object to enable at least one of ...

POSITIONING INFORMATION DETERMINATION METHOD AND DEVICE

An embodiment of the present application relates to the technical field of wireless communications, in particular to a positioning information determination method and device, for solving the problem of large positioning result errors in the prior art due to the fact that existing positioning methods cannot acquire the height difference between a UE and a base station. The positioning information determination method provided in the embodiment of the present invention comprises: a base station receives an uplink signal from a UE; and the base station determines the angle of arrival, beam declination angle and timing advance of the UE according to the received uplink signal. By determining the angle of arrival, beam declination angle and timing advance of a UE according to the received uplink signal, the base station determines the height difference between the UE and the base station according to the beam declination angle, thus reducing positioning result error and improving positioning precision. 1. A method of determining position information , wherein the method comprises:an evolved Node B (eNB) receiving an uplink signal from a User Equipment (UE); andthe eNB determining an angle of arrival, a downtilt angle of beam and a timing advance of the UE from the received uplink signal.2. The method of claim 1 , wherein the eNB determining the downtilt angle of beam comprises:the eNB determining the downtilt angle of beam from a measurement on an uplink channel; orthe eNB determining the downtilt angle of beam from a measurement of a Pre-coding Matrix Indicator (PMI) feedback.4. The method of claim 2 , wherein there is a downtilt angle between an antenna of the eNB and the direction perpendicular to the ground; andafter the eNB determines the downtilt angle of beam, the method further comprises:the eNB revising the determined downtilt angle of beam by the downtilt angle between the antenna of the eNB and the direction perpendicular to the ground.5. The method of claim ...

CAUSING PERFORMANCE OF AN ACTIVE SCAN

This specification describes a method comprising determining an orientation of a first apparatus with respect to a second apparatus (S) based on at least one radio frequency packet passed wirelessly between the first and second apparatuses, and causing performance of an active scan for the second apparatus or a third apparatus associated with the second apparatus (S) only if it is determined that the orientation of the first apparatus with respect to the second apparatus satisfies at least one predetermined condition (S). 130-. (canceled)31. A method comprising:determining an orientation of a first apparatus with respect to a second apparatus based on at least one radio frequency packet passed wirelessly between the first and second apparatuses using an array of antennas forming part of at least one of the apparatuses; andcausing performance of an active scan for the second apparatus or a third apparatus associated with the second apparatus only if it is determined that the orientation of the first apparatus with respect to the second apparatus satisfies at least one predetermined condition.32. The method of claim 31 , wherein the active scan is performed using an identifier of the second apparatus or the third apparatus that is included in a radio frequency packet received from the second apparatus.33. The method of claim 31 , wherein causing performance of the active scan for the second apparatus or the third apparatus includes adding the second apparatus or the third apparatus to an active scan white list.34. The method of claim 31 , comprising:determining a direction of gaze of a user; anddetermining that the orientation of the first apparatus with respect to the second apparatus satisfies the predetermined condition if the direction of the gaze of the user and the orientation of the first apparatus with respect to the second apparatus adopt a predetermined relationship.35. The method of claim 31 , comprising:determining a direction of a gesture performed by the ...

OBJECT TRACKING AND DATA AGGREGATION IN PANORAMIC VIDEO

Methods and systems for real-time object tracking and data aggregation in panoramic video are disclosed. An example system provides a panoramic video camera that produces panoramic video data of an area; a plurality of radio frequency tags producing tracking data; and at least one of the radio frequency tags being co-located with the panoramic video camera, producing tracking data for the panoramic video camera; at least another of the radio frequency tags being co-located with at least one object within the area, producing tracking data for the at least one object; a computing device, wherein the computing device receives the panoramic video data and further receives the tracking data from the plurality of radio frequency tags; the computing device generating a video stream by augmenting the panoramic video data with the tracking data; the computing device sending the video stream to at least one remote system. Other methods and systems are disclosed. 1. A system , comprising:a panoramic video camera that produces panoramic video data of an area;a plurality of radio frequency tags producing tracking data; andat least one of the radio frequency tags being co-located with the panoramic video camera, producing tracking data for the panoramic video camera;at least another of the radio frequency tags being co-located with at least one object within the area, producing tracking data for the at least one object;a computing device, wherein the computing device receives the panoramic video data and further receives the tracking data from the plurality of radio frequency tags;the computing device generating a video stream by augmenting the panoramic video data with the tracking data;the computing device sending the video stream to at least one remote system.2. The system of claim 1 , wherein the tracking data for the panoramic video camera comprises position data for the panoramic video camera.3. The system of claim 1 , wherein the tracking data for the at least one object ...

IDENTIFYING A VEHICLE USING A WEARABLE DEVICE

A system that includes a wearable device, and a method of using the system, including: receiving, at a first transceiver element of a wearable device, a target beam from a ride-share vehicle, the element having a first axis of reception; and when the first axis is oriented toward the beam, providing an indication, via the device, to a user thereof. 1. A method , comprising:receiving, at a first transceiver element of a wearable device, a target beam from a ride-share vehicle, the element having a first axis of reception; andwhen the first axis is oriented toward the beam, providing an indication, via the device, to a user thereof.2. The method of claim 1 , wherein the indication includes a light pattern that matches a light pattern emitted from the vehicle.3. The method of claim 1 , further comprising: prior to receiving the target beam claim 1 , transmitting claim 1 , from the transceiver claim 1 , a ride-share request.4. The method of claim 1 , wherein the element operates in a V-band (57-71 GHz).5. The method of claim 1 , further comprising:receiving the target beam via a second transceiver element of the device, wherein the second transceiver element comprises a second, different axis of reception; andproviding to the user a second indication which indicates a direction from which the target beam originates.6. A method claim 1 , comprising:receiving at an antenna array on a vehicle a ride-share request from a wearable device having a wireless transceiver, wherein the request includes alert format data;using the array, determining an angle of arrival at a vehicle computer; andtransmitting an alert to the device according to the data.7. The method of claim 6 , wherein the array comprises a plurality of vehicle-forward-facing antennas claim 6 , a plurality of vehicle-port-side-facing antennas claim 6 , and a plurality of vehicle-starboard-side-facing antennas.8. A system claim 6 , comprising: a first transceiver element having a first axis of reception; and', ...

System and method for rank estimation of electromagnetic emitters

A system and method for rank estimation of electromagnetic emitters is provided. One exemplary feature of the system and method includes the use of a Fixed Sigma Gaussian Mixture Model (FSGMM) to determine a rank estimation of electromagnetic emitters. Another exemplary feature of the system and method includes the use of a Gaussian Mixture Model (GMM) clustering approach in conjunction with an Akaike Criterion Information (AIC) to determine a number of clusters and associated statistics of emitters.

METHOD FOR DIRECTION FINDING AND DIRECTION FINDER

A method for direction finding is described wherein incoming signals are scanned and analyzed. The bearing value and its quality of the incoming signals are determined by using a direction finding method. A covariance matrix is generated from the incoming signals by using a multiple-wave detector unit. The dimension of the covariance matrix is reduced in order to obtain a reduced covariance matrix. The eigenvalues of the reduced covariance matrix are determined. Then, it is determined whether more than one signal, a single signal or no signal is detected by using the eigenvalues and the quality determined by using the direction finding method. Further, a direction finder is described. 1. A method for direction finding comprising the following steps:a) scanning incoming signals,b) analyzing the incoming signals,c) determining the bearing value and its quality of the incoming signals by using a direction finding method,d) generating a covariance matrix from the incoming signals by using a multiple-wave detector unit,e) reducing the dimension of the covariance matrix in order to obtain a reduced covariance matrix,f) determining the eigenvalues of the reduced covariance matrix, andg) determining whether more than one signal, a single signal or no signal is detected by using the eigenvalues and the quality determined by using the direction finding method.2. The method according to claim 1 , wherein the number of signals is estimated while the direction finding method is performed in parallel.3. The method according to claim 1 , wherein a frequency range is scanned that is subdivided into different channels.4. The method according to claim 3 , wherein the bearing value and its quality are determined for each channel.5. The method according to claim 3 , wherein a channel assignment is determined for each channel.6. The method according to claim 5 , wherein a high-resolution direction finding method is performed for each channel that is assigned by more than one signal ...

RECEIVER-SYSTEM

A receiver-system comprising a path-switching-unit, a redirect-switching-unit, a plurality of receive-paths, and a processor. The path-switching-unit has a plurality of path-switch-input-terminals that are each couplable to a receive-antenna. The redirect-switching-unit has a plurality of redirect-switch-output-terminals that are each associated with one of the plurality of path-switch-input-terminals in order to define a plurality of switch-terminal-pairs. The receive-paths are connected between a path-switch-output-terminal and a redirect-switch-input-terminal. The path-switching-unit and the redirect-switching-unit are configured to selectively connect each receive-path between different ones of the plurality of switch-terminal-pairs, based on a switch-control-signal. The processor can receive first-processor-input-signals from a first configuration of the plurality of receive paths selectively connected between the plurality of switch-terminal-pairs; receive further-processor-input-signals from one or more further configurations of the plurality of receive-paths selectively connected between the plurality of switch-terminal-pairs; and determine an angle-of-arrival associated with the input-signals based on the first-processor-input-signals and further-processor-input-signals. 1. A receiver-system comprising:a path-switching-unit with a plurality of path-switch-input-terminals and a plurality of path-switch-output-terminals, wherein each of the plurality of path-switch-input-terminals is couplable to a receive-antenna and is configured to receive input-signals;a redirect-switching-unit with a plurality of redirect-switch-input-terminals and a plurality of redirect-switch-output-terminals, wherein each of the plurality of redirect-switch-output-terminals is associated with one of the plurality of path-switch-input-terminals in order to define a plurality of switch-terminal-pairs;a plurality of receive-paths that are connected between a path-switch-output-terminal ...

SYSTEMS AND METHODS FOR DIRECTION FINDING USING AUGMENTED SPATIAL SAMPLE COVARIANCE MATRICES

In an array antenna having a plurality of subarrays, a direction finding system and technique includes receiving signals at an array antenna and capturing data with a plurality of groups of subarrays. Each group of subarrays may capture data during a selected one of a plurality of different dwell times. The method further includes generating a plurality of dwell spatial sample covariance matrices (SCMs) using data corresponding to one or more of the plurality of groups of subarrays and combining the plurality of dwell spatial SCMs in complex form to generate an aggregate covariance matrix (ACM). The ACM may then be used in subsequent processing with MINDIST technique to estimate a direction of a received signal based on the combined data. 1. A system comprising:a plurality of subarrays, each of the subarrays having an output port;a radio frequency (RF) receiver having one or more receiver channels, wherein the number of subarrays is greater than the number receiver channels; anda switch network having a plurality of input ports with each input port coupled to an output of one or more respective ones of said plurality of subarrays and having output ports with each switch output coupled to an input of respective one of the one or more receiver channels, said switch network operable to switch between different groups of subarrays at different dwell times such that at least one group of subarrays is configured to provide signals to the receiver channels; a direction finding processor coupled to receive signals from said RF receiver during a selected one of a plurality of dwell times.2. The system of claim 1 , wherein said receiver is configured to simultaneously provide signals to said DF processor of subarrays is active and at least one array element in each of the groups of subarrays is inactive.3. The system of claim 1 , wherein the switch matrix comprises a plurality of stages and each of the plurality of stages includes two or more switches.4. The system of claim 1 ...

System and method for controlling electronic devices

In accordance with a first aspect of the present disclosure, a control system is provided for controlling electronic devices, the control system comprising: an ultra-wideband communication unit configured to receive ultra-wideband signals from the electronic devices, and a processing unit configured to select a specific electronic device among said electronic devices for further communication, wherein the processing unit is configured to select said specific electronic device using an angle of arrival of the ultra-wideband signals received from the electronic devices. In accordance with a second aspect of the present disclosure, a corresponding control method for controlling electronic devices is conceived. In accordance with a third aspect of the present disclosure, a computer program is provided, comprising executable instructions that, when executed by a control system for controlling electronic devices, cause said control system to carry out or control a method of the kind set forth.

DETERMINING ANGLE OF ARRIVAL OF A RADIO-FREQUENCY SIGNAL

An apparatus includes a first antenna and a second antenna. A solid dielectric material is disposed between the first antenna and the second antenna. The solid dielectric material may alter radio-frequency signals received by the first antenna or the second antenna by reducing the propagation speed of the radio-frequency signals. This allows the angle of arrival of the radio-frequency signals to be determined. 1. An apparatus , comprising:a first antenna configured to receive a radio-frequency signal;a second antenna configured to receive the radio-frequency signal, wherein the second antenna is located a first distance away from the first antenna;a solid dielectric material disposed between the first antenna and the second antenna, wherein the solid dielectric is configured to alter the radio-frequency signal to simulate a second distance between the first antenna and the second antenna; and convert, by the ADC, the radio frequency signal received by the first antenna into a first digital signal and the radio frequency signal received by the second antenna into a second digital signal;', 'determine a phase difference between the first digital signal and the second digital signal, based on the second distance, wherein the second distance is based on a type of the solid dielectric material; and', 'determine a direction of a source of the radio-frequency signal relative to the apparatus, with a directional resolution of a set of antennas that are spaced the second distance apart, based on the phase difference., 'a computing device comprising a processing device and an analog-to-digital converter (ADC), wherein the processing device is communicatively coupled to the first antenna and the second antenna, the processing device to2. The apparatus of claim 1 , wherein the second distance is larger than the first distance.3. (canceled)4. The apparatus of claim 1 , wherein to determine the direction of the source of the radio-frequency signal claim 1 , the processing device ...

METHOD AND APPARATUS TO VISUALIZE LOCATIONS OF RADIO FREQUENCY IDENTIFICATION (RFID) TAGGED ITEMS

Methods and apparatus to visualize locations of radio frequency identification (RFID) tagged items are described. One example method includes receiving a request from a portable electronic device to access product information associated with an individual radio frequency identification (RFID) tagged item, determining a location of the product information in a database, transmitting the located product information to the portable electronic device for display thereon, receiving modified product information associated with the individual RFID tagged item from the portable electronic device, and storing the modified product information to the location of the product information in the database. 1. A method comprising:processing, by a processor of a portable electronic device, a plurality of received radio frequency waves to determine a location of a first radio frequency identification tagged item of a plurality of radio frequency identification tagged items, where each of the plurality of received radio frequency waves is associated with a different one of the plurality of radio frequency identification tagged items;identifying, by the processor, product information associated with the first radio frequency identification tagged item; anddisplaying, by the processor, on a display the first radio frequency identification tagged item along with the product information.2. The method of claim 1 , wherein the location comprises a distance and a lateral position.3. The method of claim 2 , wherein the location is further determined from a time delay of each of the plurality of received radio frequency waves.4. The method of claim 2 , wherein the location is further determined from an amplitude change of each of the plurality of received radio frequency waves.5. The method of claim 1 , further comprising:receiving the product information from a database.6. The method of claim 5 , wherein at least one of the plurality of received radio frequency waves is processed to extract ...

UNMANNED VEHICLE RECOGNITION AND THREAT MANAGEMENT

Systems and methods for automated unmanned aerial vehicle recognition. A multiplicity of receivers captures RF data and transmits the RF data to at least one node device. The at least one node device comprises a signal processing engine, a detection engine, a classification engine, and a direction finding engine. The at least one node device is configured with an artificial intelligence algorithm. The detection engine and classification engine are trained to detect and classify signals from unmanned vehicles and their controllers based on processed data from the signal processing engine. The direction finding engine is operable to provide lines of bearing for detected unmanned vehicles. 1. A system for unmanned vehicle (UV) recognition in a radio frequency (RF) environment , comprising:a multiplicity of RF receivers and a displaying device in network communication with at least one node device;wherein the multiplicity of RF receivers is operable to capture RF data in the RF environment, convert the RF data to fast Fourier transform (FFT) data, and transmit the FFT data to the at least one node device;wherein the at least one node device comprises a signal processing engine, a detection engine, and a direction-finding engine, and wherein the at least one node device is configured with an artificial intelligence (AI) algorithm;wherein the signal processing engine is operable to average the FFT data into at least one tile;wherein the detection engine is operable to detect at least one signal related to at least one UV and corresponding at least one UV controller in the least one tile based on the AI algorithm;wherein the direction-finding engine is operable to calculate a line of bearing for the at least one UV; andwherein the displaying device is operable to display the line of bearing of the at least one UV.2. The system of claim 1 , wherein the AI algorithm comprises an inception-based convolutional neural network operable to generate probabilities that UVs and UV ...

Slot array antenna

A slot array antenna includes: a first electrically conductive member having a first electrically conductive surface; a second electrically conductive member having a second electrically conductive surface opposed to the first electrically conductive surface; a waveguide member located between the first and second electrically conductive members; and an artificial magnetic conductor extending on both sides of the waveguide member in between the first and second electrically conductive members. The first or second electrically conductive member has a plurality of slots. The waveguide member includes an electrically-conductive waveguide face of a stripe shape opposed to the first electrically conductive surface. The plurality of slots include at least two slots that couple to the waveguide face. In between two positions respectively coupled to the two slots, the waveguide face includes at least one deflecting portion at which the direction that the waveguide face extends changes.

System and method for detecting fake information about vehicle location

A system for detecting fake information about a vehicle location may include a radio signal receiver configured to receive a radio signal from a communication system; a message receiver configured to receive the radio signal to generate a message and determine the message to generate information about a location of the communication system; a radio signal incident angle calculator configured to generate a radio signal incident angle; an azimuth calculator configured to generate a location information azimuth angle by use of the information about locations of the communication system and a receiving vehicle, and a fake vehicle generated by the communication system; and a location information fake detector configured to determine whether location information of the fake vehicle is faked by use of a difference value between an angle corresponding to a reference axis of the location information azimuth angle and the location information azimuth angle.

Location based wireless pet containment system using single base unit

A wireless animal location system is provided that identifies a location of a pet roaming within an environment using a single base unit. The wireless animal location system tracks and manages animal behavior in the environment using information of pet location.

MEASUREMENT SYSTEM AND METHOD FOR IDENTIFYING A SOURCE DIRECTION OF A WIRELESS ELECTROMAGNETIC EMITTER SIGNAL

A measurement system for identifying a source direction of a wireless electromagnetic emitter signal is described. The measurement system is a radio frequency measurement system that comprises a rotary antenna and an analyzer or analysis unit being connected to the rotary antenna in a signal transmitting manner. The rotary antenna is a directional antenna and configured to receive the emitter signal and to forward the received emitter signal to the analysis unit for further processing. The measurement system is configured to gather a momentary position of the rotary antenna. The analysis unit is configured to determine a momentary frequency spectrum of the emitter signal and to combine the momentary frequency spectrum with the momentary position to generate source direction data comprising information on both the momentary frequency spectrum of the emitter signal and the momentary position of the rotary antenna. Moreover, a method for identifying a source direction of a wireless electromagnetic emitter signal is described. 1. A measurement system for identifying a source direction of a wireless electromagnetic emitter signal , the measurement system being a radio frequency measurement system that comprises:a rotary antenna and an analyzer being connected to the rotary antenna in a signal transmitting manner, whereinthe rotary antenna being a directional antenna, the rotary antenna being configured to receive the emitter signal and to forward the received emitter signal to the analyzer for further processing;the measurement system being configured to gather a momentary position of the rotary antenna; andthe analyzer being configured to determine a momentary frequency spectrum of said emitter signal and to combine said momentary frequency spectrum with said momentary position to generate source direction data comprising information on both the momentary frequency spectrum of the emitter signal and the momentary position of the rotary antenna.2. The measurement system ...

UNMANNED VEHICLE RECOGNITION AND THREAT MANAGEMENT

Systems and methods for automated unmanned aerial vehicle recognition. A multiplicity of receivers captures RF data and transmits the RF data to at least one node device. The at least one node device comprises a signal processing engine, a detection engine, a classification engine, and a direction finding engine. The at least one node device is configured with an artificial intelligence algorithm. The detection engine and classification engine are trained to detect and classify signals from unmanned vehicles and their controllers based on processed data from the signal processing engine. The direction finding engine is operable to provide lines of bearing for detected unmanned vehicles. 1. A system for unmanned vehicle (UV) recognition in a radio frequency (RF) environment , comprising:at least one node device in network communication with a multiplicity of RF receivers and a displaying device;wherein the multiplicity of RF receivers is operable to capture RF data in the RF environment, convert the RF data to fast Fourier transform (FFT) data, and transmit the FFT data to the at least one node device;wherein the at least one node device comprises a signal processing engine, a detection engine, and a direction-finding engine, and wherein the at least one node device is configured with an artificial intelligence (AI) algorithm;wherein the signal processing engine is operable to average the FFT data into at least one tile;wherein the detection engine is operable to detect at least one signal related to at least one UV in the at least one tile based on the AI algorithm;wherein the direction-finding engine is operable to calculate a line of bearing for the at least one UV; andwherein the displaying device is operable to display the line of bearing of the at least one UV.2. The system of claim 1 , wherein the AI algorithm comprises an inception-based convolutional neural network operable to generate probabilities that UVs are detected.3. The system of claim 1 , wherein ...

METHOD FOR RADIO DIRECTION FINDING, DIRECTION FINDING SYSTEM AS WELL AS PLATFORM

A method for radio direction finding using a direction finding system having an antenna, a magnetic field sensor and a control unit, the method comprising: receiving a radio frequency signal of at least one emitter via the antenna by the control unit obtaining a received signal; receiving a magnetic measurement value of the magnetic field at the direction finding system via the magnetic field sensor; correcting the magnetic measurement value obtaining a corrected magnetic measurement value; correcting the received signal obtaining a corrected signal; and determining the precise bearing of the emitter based on the corrected received signal and the corrected magnetic measurement value. Further, a direction finding system and a platform are disclosed. 1. A method for radio direction finding using a direction finding system for a platform having at least one antenna , at least one magnetic field sensor and a control unit electrically connected to the at least one magnetic field sensor and the at least one antenna , the method comprising:receiving at least one radio frequency signal of at least one emitter via the antenna by the control unit obtaining a received signal;receiving a magnetic measurement value of the magnetic field at the direction finding system via the magnetic field sensor by the control unit;correcting the magnetic measurement value obtaining a corrected magnetic measurement value;correcting the received signal obtaining a corrected signal; anddetermining the precise bearing of the emitter based on the corrected received signal and the corrected magnetic measurement value.2. The method according to claim 1 , wherein the magnetic measurement value is corrected by the control unit using a predetermined magnetic correction table having magnetic correction values claim 1 , wherein the magnetic correction values are based on at least magnetic deviations of the magnetic field surrounding the direction finding system caused by at least one of the platform ...

METHOD AND AN APPARATUS FOR TRACKING ITEMS

Aspects of the invention are directed towards an apparatus and a method for tracking movement of one or more items. One or more embodiments of the invention describe the method comprising steps of receiving an unloading location of each of one or more items and determining a current location of a container. The method further describes steps of determining an angle of arrival and/or an angle of departure based on a signal from the one or more items and determining movement of the one or more items based on the angle of arrival and/or the angle of departure. The method also describes steps of transmitting a message to a device based on the current location of the container, the unloading location and the movement of the one or more items. 1. An accessing unit comprising:a receiver adapted to receive an unloading location of each of one or more items;a location unit adapted to determine a current location of a container;a determination unit adapted to:determine an angle of arrival and/or an angle of departure based on a signal from the one or more items; anddetermine movement of the one or more items based on the angle of arrival and/or the angle of departure; anda transmitter adapted to transmit a message to a device based on the current location of the container, the unloading location and the movement of the one or more items.2. The accessing unit of claim 1 , wherein the receiver is adapted to receive the unloading location of one or more items being moved inside the container.3. The accessing unit of claim 1 , wherein the determination unit is adapted to determine an inward movement of the one or more items based on the angle of arrival and/or the angle of departure of each of the one or more items.4. The accessing unit of claim 1 , wherein the determination unit is adapted to determine an outward movement of the one or more items based on the angle of arrival and/or the angle of departure of each of the one or more items inside the container.5. The accessing ...

WIRELESS NETWORK CONTROLLER AND METHOD OF CONTROLLING A WIRELESS NETWORK

An antenna apparatus for use in a wireless network and method of operating such an antenna apparatus are provided. A wireless network controller provides a configuration of such an antenna apparatus, a method of operating such a wireless network controller, and a resulting wireless network. The antenna apparatus comprises a directional antenna and a uniform circular antenna array. The directional antenna can be rotatably positioned about an axis with respect to a fixed mounting portion of the apparatus in dependence on wireless signals received by the antenna array. The antenna array allows the antenna apparatus to receive wireless signals isotropically and thus to accurately monitor the wireless signal environment in which it finds itself. The antenna apparatus can thus monitor and characterise incoming signals, both from external interference sources and from other network nodes, and the directional antenna can then be positioned in rotation to improve the network throughput. 1. Apparatus for controlling a wireless network comprising:an input to receive signal strength information and direction information from at least one antenna apparatus in the wireless network;configuration optimisation circuitry to perform an iterative wireless network optimisation procedure to determine at least one rotational position for the at least one antenna apparatus on the basis of the signal strength information and the direction information received, wherein the iterative wireless network optimisation procedure iterates in a direction of reduced interference for the at least one antenna apparatus; andinstruction transmission circuitry configured to send at least one rotational positioning instruction to at least one antenna apparatus in the wireless network to cause the at least one antenna apparatus to rotationally position its directional antenna in accordance with the at least one rotational positioning instruction.2. The apparatus as claimed in claim 1 , wherein the iterative ...

Single Channel Interferometer with Optical Delay Lines

Systems and methods are provided in which a direction of arrival of a radio frequency (RF) signal received by a plurality of antennas is determined. A plurality of first converter receives RF signals from the plurality of antennas and outputs a minimum of a first optical signal and a second optical signal each modulated by their corresponding RF signal. A plurality of second converters receives a minimum of the first optical signal via a first optical channel that introduces a first delay and the second optical signal via a second optical channel that introduces a second delay. The second converter outputs a first RF signal that corresponds to the RF modulation on the first optical signal and a second RF signal that corresponds to the RF modulation on the second optical signal. A switch serially receives, from the second converter outputs, the first RF signal and the second RF signal. A direction finding subsystem determines a direction of arrival using a phase difference between the first RF signal and the second RF signal.

POSITIONING SENSOR, SENSOR, AND METHOD

A positioning sensor includes m receiving antennas connected to a feeder circuit and n variable loads, and a receiver that receives a first signal via the m receiving antennas. The positioning sensor further includes a memory that stores a first signal strength value of a first signal that the receiver receives when a variable load varies in value, and a processor that calculates a second signal strength value from a complex propagation channel, searches for a complex propagation channel candidate that has a minimum difference between a first signal strength and a second signal strength, determines the complex propagation channel candidate to be a complex propagation channel when the receiver receives the first signal, and estimates an incoming direction of the first signal from the determined complex propagation channel. 1. A positioning sensor comprising:m receiving antennas (m is an integer equal to or above 1);a feeder circuit that is connected to the receiving antennas;n variable loads connected to the feeder circuit (n is an integer equal to or above 1);a receiver that receives via the receiving antennas and the feeder circuit a first signal responsive to a signal that a transmitter has transmitted in a specific area from the positioning sensor within which a moving object is likely to be present;a controller that sets an impedance value for each variable load;a memory that stores a first signal strength value indicating a strength of the first signal responsive to the impedance value of the variable load that is set by the controller; anda processor that sets a plurality of candidates for a complex propagation channel indicating signal propagation characteristics between the transmitter and the receiver, calculates a plurality of second signal strength values when the receiver receives a second signal transmitted from the transmitter, the second signal strength value indicating a strength of the second signal, the second signal strength values respectively ...

DETERMINATION SYSTEM FOR THE DIRECTION OF ARRIVAL OF A SIGNAL AND FOR ELECTRONIC ATTACK

An apparatus, method, or computer-readable storage medium encoded with computer-executable instructions that, when executed by a computer, cause the computer to carry out a method for determining one or more directions of arrival of one or more coherent or incoherent signals with a single radio frequency channel. The apparatus may comprise: a plurality of antenna elements () configured to determine the one or more coherent or incoherent signals; a plurality of radio frequency switches () configured to selectively activate one or more of the plurality of antenna elements; and a radio frequency combiner () configured to combine a plurality of radio frequency signals from one or more selectively activated antenna elements of the plurality of antenna elements. 1. An apparatus for determining one or more directions of arrival of one or more coherent or incoherent signals with a single radio frequency channel , the apparatus comprising:a plurality of antenna elements configured to determine the one or more coherent or incoherent signals;a plurality of radio frequency switches configured to selectively activate one or more of the plurality of antenna elements; anda radio frequency combiner configured to combine a plurality of radio frequency signals from one or more selectively activated antenna elements of the plurality of antenna elements.2. The apparatus of claim 1 , further comprising:at least one radio frequency channel; andat least one processor configured to determine the one or more directions of arrival of the one or more coherent or incoherent signals.3. The apparatus of claim 2 , wherein the at least one processor is configured to determine the one or more directions of arrival of the one or more coherent or incoherent signals using compressive sensing and the at least one radio frequency channel.4. The apparatus of claim 1 , wherein the plurality of radio frequency switches are configured to selectively activate the one or more of the plurality of antenna ...

Methods and devices for estimating angle information for wireless communication systems

A method for estimating angle information for a wireless communication system includes receiving, by a wireless transmit/receive unit (WTRU), a plurality of first training symbols during a first period of time, wherein the plurality of first training symbols is transmitted using a first transmit beamforming vector fixed during the first period of time and received using a first receive beamforming, vector varied during the first period of time; estimating, by the WTRU, a plurality of first channel delay values based on the plurality of first training symbols; estimating, by the WTRU, a plurality of first channel values based on the plurality of first channel delay values; and estimating, by the WTRU, a first angle value of a path of a wireless channel based on the plurality of first channel values.

Analog signal processing method for accurate single antenna direction finding

Embodiments are directed to receiving an incoming signal, converting, by an analog circuit, the signal to a discrete time signal, applying, by the analog circuit, a transformation algorithm to the discrete time signal to obtain frequency samples of the discrete time signal, applying, by the analog circuit, a cross correlation algorithm to the frequency samples to obtain a cross spectral density (CSD), detecting, by the analog circuit, phase slopes associated with the CSD, and calculating an angle of arrival (AoA) of the incoming signal based on the phase slopes.

METHOD AND SYSTEM FOR ESTIMATING THE DIRECTION OF A SATELLITE IN THE TRANSFER PHASE FROM AN INITIAL ORBIT TO A MISSION ORBIT

A method for estimating a direction of a satellite in the transfer phase. The direction of the satellite is estimated relative to a measurement antenna by executing steps for measuring the reception power, by the measurement antenna, of a target signal emitted by the satellite, for different pointing directions of the measurement antenna. The target signal has a substantially sinusoidal component referred to as a single-frequency component. Each power measurement step includes a transposition in the frequency domain of a digital signal, obtained from a signal supplied by the measurement antenna, to obtain a frequency spectrum of the digital signal over a predetermined frequency band having the single-frequency component. The power measurement for the pointing direction being considered is determined based on a maximum value of the frequency spectrum. 125-. (canceled)26. A method for estimating a direction of a satellite during a transfer phase of the satellite from an Earth orbit , referred to as an initial orbit , to another Earth orbit , referred to as a mission orbit , comprising steps of:measuring, by a measurement antenna, the reception powers to estimate the direction of the satellite relative to the measurement antenna of a target signal emitted by the satellite, for different pointing directions of the measurement antenna, the estimated direction of the satellite corresponding to a pointing direction maximizing a power measurement;wherein, the target signal comprises a substantially sinusoidal component, referred to as a single-frequency component, each power measurement step comprises a transposition in a frequency domain of a digital signal, obtained from a signal supplied by the measurement antenna, to obtain a frequency spectrum of the digital signal over a predetermined frequency band comprising the single-frequency component, referred to as a measurement band, and the power measurement for a pointing direction being considered is determined based on a ...

CORNER SENSOR FOR A MOTOR VEHICLE

A corner sensor for a motor vehicle capable of communicating over a wireless communication link with an authentication device and including: an array of antennae; and an electronic control unit configured to: determine the phase difference between the segments received by the antennae; determine the probability of each angle of incidence over a range of angles that is predetermined on the basis of the determined phase differences and of a predefined table, so as to determine a probability profile; measure the power of the segments received by the antennae of the array of antennae so as to determine a power profile; determine the actual angle of incidence of the signal by multiplying the probability profile with the power profile; and send the value of the determined actual angle of incidence to a central electronic control unit of the vehicle. 1. A corner sensor for a motor vehicle , said corner sensor being capable of communicating over a wireless communication link with an authentication device carried by a user of said vehicle , said corner sensor comprising:i. an array of antennae, each antenna of which is configured to be active for reception during a predetermined time range, called “reception” time range, that is different from the reception time ranges of the other antennae of the array of antennae, so as to receive a different portion, called “segment”, of the same signal sent by the device via said wireless communication link; 1. determine the phase difference between the segments received by the antennae of the array of antennae;', {'sub': 'b', '2. determine a probability of each angle of incidence over a predetermined range of angles on the basis of the determined phase differences and of a predefined table, so as to determine a probability profile (P) over the predetermined range of angles;'}, {'sub': 'u', '3. measure a power of the segments received by the antennae of the array of antennae so as to determine a power profile (P) over the predetermined ...

OBJECT ORIENTATION SYSTEM, OBJECT ORIENTATION METHOD AND ELECTRONIC APPARATUS

An object orientation system, an object orientation method and an electronic apparatus are provided. A signal transmitter includes a directional antenna and emits a first wireless signal. A plurality of signal receivers are respectively disposed in a plurality of orientations. The signal receivers receive the first wireless signal and measure a plurality of first received signal strength indicators of the first wireless signal. The electronic apparatus is coupled to the signal receivers, estimates a plurality of strength variation data of the first received signal strength indicators measured by the signal receivers, and obtains orientation information of the signal transmitter according to the strength variation data corresponding to the signal receivers. 1. An object orientation system , comprising:a signal transmitter, comprising a directional antenna, and emitting a first wireless signal;a plurality of signal receivers, respectively disposed in a plurality of orientations, receiving the first wireless signal, and measuring a plurality of first received signal strength indicators of the first wireless signal; andan electronic apparatus, coupled to the signal receivers, estimating a plurality of strength variation data of the first received signal strength indicators measured by the signal receivers, and obtaining orientation information of the signal transmitter according to the strength variation data corresponding to the signal receivers.2. The object orientation system according to claim 1 , wherein in the operation where the electronic apparatus estimates the strength variation data of the first received signal strength indicators measured by the signal receivers claim 1 ,the electronic apparatus respectively calculates a plurality of standard deviations of the first received signal strength indicators measured by the signal receivers in a preset sampling period.3. The object orientation system according to claim 2 , wherein in the operation where the ...

METHOD, APPARATUS AND COMPUTER PROGRAM FOR DETERMINING THE LOCATION OF A USER IN AN AREA

Apparatus for orientating a user in a space wherein the space comprises a plurality of zones of which only certain zones constitute functional zones wherein each functional zone includes a first type device containing information relating to the position of the zone in the space and wherein the first type device is reactive to the presence of a second type device associated with the user to provide the user with the information to determine the orientation of the user in the space. A method of orientating the user within the space and guiding the user toward one or more features in the space is also disclosed. 1. A system to help direct a user to a location and orientation in a defined space , said defined space comprising a plurality of functional zones , the system comprising:a multitude of first type devices, wherein each of the first type devices is located in one of said zones and includes information relating to the position of said one of the zones in the space;a plurality of second type devices attached to the user in defined positions relative to the user, and wherein when the user is in said space, each of two of the first type devices reacts concurrently to the presence of a respective one of the second type devices to provide orientation information including two concurrent readings at a given moment identifying a current location of each of said respective one of the second type devices in the space;an orientation system for receiving and processing said orientation information to determine specified information including a current orientation of the user and relative to a plurality of specified places at the given moment from said two concurrent readings taken at said given moment; anda communications system for receiving the specified information from the orientation system to inform the user of the location of the user in the defined space.2. The system of wherein each functional zone is a surface mounted zone.3. The system of wherein at least two ...

Device, System and Methods Using Angle of Arrival Measurements for ADS-B Authentication and Navigation

The present disclosure is directed to a receiver for Automatic Dependent Surveillance Broadcast (ADS-B) verification of a target aircraft including a first input for receiving flight tracking information from a target aircraft that indicates positional information of the target aircraft. The receiver further includes a second input for receiving positional and heading information indicating the location and orientation of a multi-element array antenna configured to be attached to the receiver, and a processing module that generates a measured bearing derived from angle of arrival data, and an expected bearing of the target aircraft derived from the indicated positional information of the target aircraft and the positional and heading information defining the receiver location and orientation. A comparator compares the expected bearing to the measured bearing and verifies the ADS-B flight tracking information of the target aircraft and outputs an indication of authenticity based on the verification. 1. An aircraft receiver for Automatic Dependent Surveillance Broadcast (ADS-B) verification of a target aircraft , comprising:a first input for receiving ADS-B flight tracking information from the target aircraft at the receiver, the ADS-B flight tracking information including indicated positional information of the target aircraft;a second input for receiving positional information and heading information indicating the location and orientation of a multi-element array antenna configured to be attached to the receiver; generate a measured bearing derived from angle of arrival data, and', 'generate an expected bearing of the target aircraft derived from the indicated positional information of the target aircraft and the positional information and heading information defining the receiver location and orientation;, 'a processing module operative to'}a comparator for comparing the expected bearing to the measured bearing and verifying the ADS-B flight tracking information ...

Location based wireless pet containment system using single base unit

A wireless animal location system is provided that identifies a location of a pet roaming within an environment using a single base unit. The wireless animal location system tracks and manages animal behavior in the environment using information of pet location.