СОКРАЩЕНИЕ ЛОЖНЫХ ПРЕДУПРЕЖДЕНИЙ О РАДАРАХ

Изобретение относится к области радиосвязи. Техническим результатом является подавление ложных предупреждений о локально формируемых сигналах радаров. Детектор (10) радаров подавляет предупреждения от систем помощи в управлении транспортными средствами путем сканирования (206, 208) в поисках соответствующего сигнала радара; центральная частота сигнала сохраняется (212) в памяти, и детектор (10) подавляет (218) предупреждения о сигналах радаров вблизи этой частоты. Детектор использует усовершенствованный способ (300) для подавления сигналов вблизи известного местоположения источника ложных сигналов; в случае, если детектор обнаруживает сигнал радара и находит соответствующий ему сохраненный в памяти ложный сигнал, детектор сначала сравнивает (310) мощность принятого сигнала с пороговой мощностью, которая вычисляется (308) на основании расстояния от детектора до сохраненного в памяти ложного сигнала, и подавляет лишь сигналы ниже пороговой величины. 3 н. и 17 з.п. ф-лы, 4 ил.

Радиолокационная станция пространственного кодирования MIMO

Полезная модель относится к области радиолокации. Технический результат заключается в повышении точности определения расстояния и скорости движущегося объекта. Указанный результат достигается с помощью использования в радиолокационной станции пространственного кодирования MIMO блоков двух генераторов первичных сигналов, сумматора, массива передающих антенн, массива приемных антенн, мультиплексоров, блоков быстрого преобразования Фурье, блока, определяющего пиковые значения сформированного сигнала, блока вычисления расстояния и скорости определяемого объекта, отличием от прототипа является наличие блока синхронизации, реализующего технологию MIMO и массива из N>2 антенн, работающих как на передачу, так и на прием. 1 ил.

УСТРОЙСТВО ДЛЯ ЭЛЕКТРОМАГНИТНОГО ЗОНДИРОВАНИЯ ОБРАЗЦА

Использование: для электромагнитного зондирования образца. Сущность изобретения заключается в том, что устройство для неразрушающего зондирования образца посредством отражения электромагнитной волны, устройство содержит: каркас, антенную конструкцию, возбудитель, электрически присоединенный к антенной конструкции для отправки зондирующего сигнала через антенную конструкцию, приемник, электрически присоединенный к антенной конструкции для приема эхо–сигнала через антенную конструкцию, по меньшей мере первую печатную плату, при этом, по меньшей мере часть возбудителя и/или приемника размещена на первой печатной плате, по меньшей мере вторую печатную плату при этом антенная конструкция размещена на второй печатной плате, металлический кузов, скомпонованный на каркасе, имеющий первую и вторую противоположные стороны, по меньшей мере один электрический разъем для электрического соединения первой и второй печатных плат, при этом, первая печатная плата установлена с первой стороны металлического ...

СПОСОБ КЛАССИФИКАЦИИ И БЛАНКИРОВАНИЯ ДИСКРЕТНЫХ ПОМЕХ

Изобретение относится к области радиотехники, в частности к цифровой обработке радиолокационных сигналов, и предназначено для повышения эффективности классификации и бланкирования дискретных пассивных помех. Изобретение характеризуется тем, что осуществляют оценки продольного размера классифицируемых объектов и размер, который не превышает порог, классифицируют как мешающий сигнал по корреляционному признаку, формируют оценку мощности принимаемых сигналов, которая сравнивается с порогом в каждом элементе дальности с присвоением при не превышении этого порога в конкретном элементе дальности признака сигнала мешающего отражения, при этом после объединения корреляционного, скоростного и ЭПР признаков мешающего сигнала при их совпадении принимается решение о бланкировании отраженного сигнала в данном элементе дальности. 2 з.п. ф-лы, 2 ил.

Помехоустойчивая дальномерная локальная радионавигационная система, обеспечивающая высокоточное позиционирование

Изобретение относится к области радионавигации. Техническим результатом является обеспечение высокоточного позиционирования абонентов в запросном режиме с использованием дальномерного метода позиционирования, обеспечивающего сантиметровую точность позиционирования с использованием помехоустойчивого способа корреляционной обработки шумоподобных сигналов и высокую устойчивость к маскирующим и имитационным помехам. Упомянутый технический результат достигается тем, что дальномерная локальная радионавигационная система, обеспечивающая высокоточное позиционирование, использующая навигационный сигнал, свободный от воздействия ионосферы, тропосферы и погрешности определения эфемерид спутников, независимый от глобальных навигационных спутниковых систем, решающая как задачу позиционирования, так и задачу мониторинга объектов, содержит приемопередатчики на опорных станциях и абонентских терминалах, использует запросный режим и дальномерный метод позиционирования в условиях отсутствия синхронизации ...

СИСТЕМА РАДАРНОГО УРОВНЕМЕРА МАЛОЙ МОЩНОСТИ, СОДЕРЖАЩАЯ ИНТЕГРАЛЬНУЮ СХЕМУ СВЧ

Средство для блокирования радиоуправляемых взрывателей

Incremental angle measuring drive for transceiver - has quadruple input AND=gate supplying inverter assigned to correction counter

An incremental, angle measurement drive arrangement for a transmitter-receiver arrangement rotatable about the vertical and horizontal axes and a reflecting target marker at the target location has drives mounted on the axes and electronic angle meters at the angle increment generation positions. The drives contain sync. motors supplied with sinusoidal voltages of quartz accuracy. The l.f. motor voltage is derived from the h.f. quartz voltage by frequency division. USE/ADVANTAGE - Measurement accuracy and resolution is increased. Costly fine mechanical systems are replaced by reliable electronic digital system, reducing wt.. Fine mechanical and optical angle measuring needed for geodesy, mark separation distinction in engineering, astronomy, radio location, navigation by land, sea and air including spacecraft, fine instruments mfr..

Level meter for medium in container working according to radar principle

The level meter involves a radar system (1) which has a microwave generator producing a microwave signal which is reflected at the surface of a medium (2) in a container (4), and a microwave detector across a receiver aerial (3). The transmitter aerial and/or the receiver aerial can be designed as a dielectric rod radiation unit. A single surface wave transmitter simultaneously serves as a transmitter aerial and as a receiver aerial designed pref. as cylindrical surface wave aerial. The receiver and transmitter aerials are immersed at least partially in the medium. The aerials extend at least approximately, over the entire height of a container storing the medium.

Vorrichtung und Verfahren zum Detektieren von Zielen unter Verwendung von Radar

Vorrichtung zum Detektieren von Zielen unter Verwendung eines Radars, wobei die Vorrichtung aufweist:eine Einheit zum Selektieren von Daten, die Referenzdaten mit mindestens einem von vorherigen Daten und nachfolgenden Daten vergleicht, die auf beiden Seiten der Referenzdaten lokalisiert sind, von einem empfangenen Signal, einschließlich Informationen über eine Entfernung und eine Geschwindigkeit für mehrere Ziele, um spezifische Daten zu selektieren;eine Einheit zum Berechnen von Mittelwerten von Zellen, die einen Mittelwert von extrahierten Zellen unter Verwendung eines gleitenden Fensters berechnet, das die spezifischen Daten einschließt;eine Einheit zum Detektieren von CFAR-Daten, die konstante Falschalarmrate (CFAR)-Daten basierend auf dem Mittelwert der extrahierten Zellen detektiert; undeine Einheit zum Detektieren von Zielen, die das Ziel basierend auf den CFAR-Daten detektiert.

Türgriffbaugruppe, Fahrzeugtür und Fahrzeug

Die Erfindung betrifft eine Türgriffbaugruppe (1a; 1b; 1c) zur Integration in eine Fahrzeugtür (8), eine entsprechende Fahrzeugtür (8) und ein Fahrzeug mit einer entsprechenden Fahrzeugtür (8). Die Türgriffbaugruppe (1a; 1b; 1c) umfasst ein Trägerelement (2), welches mit der Fahrzeugtür (8) verbindbar ist, ein Griffelement (32), welches an dem Trägerelement (2) angeordnet ist, und eine an dem Trägerelement (2) oder an oder in dem Griffelement (32) angeordnete Radarvorrichtung (4), welche dazu ausgebildet ist, Radarstrahlung (S) auszusenden und reflektierte Radarstrahlung (S) zu empfangen.

Target acquisition and tracking system

Improvements in and relating to radar receivers

Improvements in or relating to radar systems

Described herein is a radar system (10) in which a reflector unit (14) is used to improve bi-static or forward scatter radar. The reflector unit (14) is used in conjunction with a co-located radar transmitter/receiver arrangement (12) to detect the presence of an object (20) passing in a zone (18) which extends between the reflector unit (14) and the transmitter/receiver arrangement (12). The reflector may comprise orthogonal plates (26,28) and may have more than two of these. The reflector unit may be 100m high and it may be inflatable.

Emergency position indicating device using RCS(radar cross section) characteristics

The present invention is about the emergency position indicating device using RCS. As the present invention is to solve problems finding out the locations of victims in emergency, it allows easily to find the location of victims immediately in day/night time or even in bad weather, and exceeds the weak points of EPIRB that have 4 miles of the error range and is not applicable for individual portables, and Cyalume Lightstick that have a limit for the indication range. As floating it on the air(10~30m) for a long time after injecting the lighter gas than air into the balloon type equipment that contains the reflection body covered (coated) by the metal film of Dihedral or Tri-hedralal structure of which can maximize RCS, it has the characteristic to notify the locations of victims effectively by strongly reflecting the radar wave from a sailing or searching radar of adjacent ships or the rescue. Since the present invention have advantages that the locations of victims can be easily found ...

Mine detector and inspection apparatus

A mine detector is provided for detecting buried land mines safely and promptly. A sensor head 12 is connected to a detector body 1 through hinges 11-1 to 11-4 and arms 12-1 to 12-3. The sensor head 12 includes a transmitting and receiving means for emitting electromagnetic impulses to the ground within a range of detection of land mines. When the transmitting and receiving means receives electromagnetic waves reflected from a land mine, information on the three dimensional structure of the land mine buried under the ground is generated on the basis of the time of arrival of the reflected wave, the level of the reflected wave, and the x and y co-ordinates of the transmitting and receiving means, and the information is displayed on a display 1. The material of the land mine positioned in the ground may further be determined based on a signal corresponding to the level of the reflected wave and different materials may be indicated using different colours on the display 1. The detector may ...

High speed, high efficiency, high power RF pulse modulating integrated switch

Embodiments of a drain modulator that uses high power switch sensing to control active pulldown are generally described herein. In some embodiments, a logic and sense module is arranged to receive a control signal for controlling an on and an off state of an input of a switch to turn a high power voltage at an output of the switch on and off. A pullup module and a pulldown module are coupled to the input of the switch. An active pulldown module coupled to the output of the switch. The logic and sense module monitors the input to the switch and activates the active pulldown module to drain the output of the switch to a zero voltage when the input of the switch transitions to the off state.

Range-independent resolution radar

An apparatus for imaging that is not range dependent for resolution is provided. Arrays of cells comprised of antennas and true delays can be played behind a target. The signal reflected by the individual cells provides information on whether the cell is blocked by the target. Additional information can be determined from the radar returns, such as material properties and target thickness. Similar structures can be constructed to act as wireless barcodes.

Observation device, observation method, and program

... [Problem] In radar observation and the like, to enable extraction of an actual radio wave source to make it possible to distinguish the same from information that is not an actual radio wave source, even if the signal-to-noise ratio is not sufficiently high. [Solution] A signal processing unit 15 performs a Fourier transform in an azimuth angle frequency domain of a distribution function of a received electric field signal from an antenna in which a beam is scanned within a prescribed azimuth angle, on the basis of the received electric field signal and an azimuth angle signal of the scanned beam, divides a signal resulting from a Fourier transformed first spectral function by a signal resulting from a second spectral function obtained by performing a Fourier transform in the azimuth angle frequency domain of an antenna pattern of the antenna, and uses Prony's method to fit the divided signal to parameters using an exponential function including a real part and an imaginary part.

Dual beam monopulse antenna system

PROCEDURE FOR OPTIMIZING THE DISTRIBUTION OF SENSOR OPERATIONAL FUNDS

Uniform discrete fourier transform filter parameter encoder

Sichtgerät-Einbaueinheit für ein Radargerät

RADAR TRANSMITTER UNIT.

Radar apparatus for the detection of unmanned, slowly and low flying flying objects.

Die Erfindung betrifft eine Radarvorrichtung (1) zur Detektion von unbemannten, langsam und tief fliegenden Flugobjekten mit mindestens einem Radarsensor (15). Die Detektion von solchen unbemannten, langsam und tief fliegenden Flugobjekten ist dadurch verbessert, dass mindestens ein Radarsensor (15) als Automobilradarsensormodul (16) ausgestaltet ist.

GWR-Sonde zur Trennschichtmessung für viskose Fluide.

Die Erfindung betrifft eine Sonde, die mit einem Füllstandmessinstrument verwendet wird, das eine Impulsschaltung zum Erzeugen von Impulsen beinhaltet. Ein Koaxialanschluss ist am Sondengehäuse (60) befestigt, so dass das Sondengehäuse (60) elektrisch mit der Erdungsabschirmung verbunden ist. Ein Mittelstab (66) weist ein oberes Ende auf, das in das Sondengehäuse aufgenommen wird und sich in ein Prozessfluid erstreckt. Der Mittelstab ist elektrisch mit dem Mittelanschluss zum Leiten der Impulse verbunden. Die Erdungsstäbe (68, 69, 70, 71) sind um den Mittelstab (66) verteilt und am Sondengehäuse (60) befestigt. Die Sonde stellt eine offene Konfiguration bereit, die weniger anfällig für Ablagerungen zwischen dem Mittelstab und den Erdungsstäben ist. Einer oder mehrere der Erdungsstäbe können durch Rohre, die mit einer Spülschnittstelle verbunden sind, mit Düsen zum Reinigen des Mittelstabes versehen sein. Ein weiterer Erdungsstab kann rohrförmig sein, um einen Leiter zu tragen, der zur Messung ...

Vehicle millimeter wave anti-collision radar system and obstacle detection method

SCANNING CONTROL METHOD, DEVICE AND EQUIPMENT FOR LASER RADAR

Radar system using high heat dissipation microwave component

Antenna with lenses

Radar - communication spectrum sharing-based networking radar waveform design method

For vehicle radar and operating the radar method

Cooperative networking measurement method and device of cloud-measuring radar

SUPPORT FOR VEHICLE RADAR

Ce support pour radar pour véhicule comprend un élément principal (5) et un élément d'accueil (6), L'élément principal (5) comprenant deux parties (16, 17). La première partie (16) est apte à coopérer avec L'élément d'accueil (6) situé à l'avant du véhicule (3) et la seconde partie (17) est apte à coopérer avec le radar (1). En outre les deux parties (16, 17) de L'élément principal (5) sont réunies par au moins une patte rétractable (18, 19, 20).

MARK OUT RADAR

Reflective backlit radar protection device

BROADBAND FREQUENCY DETECTOR USING A PLURALITY OF LOCAL OSCILLATORS AND SWITCHES

PURPOSE: A broadband frequency detector is provided to detect an X-band frequency and a K-band frequency or a Ka-band frequency using one single frequency detector. CONSTITUTION: A horn antenna(200) receives a signal having a specific frequency. A first amplifier(202) receives a signal having a specific frequency from the horn antenna. A mixing unit(206) receives a low-noise amplified signal in the first amplifier from the first amplifier. A second amplifier(204) is arranged with the first amplifier, amplifies the received signal from the horn antenna, and transmits the signal to the mixing unit. COPYRIGHT KIPO 2013 [Reference numerals] (238) Central processing device; (240) Storage unit; (242) Voice output unit; (244) Input unit; (246) Display unit ...

COMPLEX OBSERVATION APPARATUS FOR MEASURING DISTANCE

According to the present invention, a complex observation apparatus for measuring a distance enables to measure even a distance from an observation target while observing daylight and/or night vision. The apparatus comprises: a daylight optical system (100) forming an image of an observation target; a light transmission unit (200) projecting a laser beam to measure a distance from the observation target; a light receiving unit (300) receiving the laser beam reflected from the observation target; a display unit (400) displaying an image for displaying a condition or a set image of the observation apparatus; and a control unit (500) connected to the light transmission unit, the light receiving unit and the display unit to control the same, wherein an objective lens unit (110) of the daylight optical system (100) is commonly used to observe the image of the observation target and measure the distance from the observation target. COPYRIGHT KIPO 2016 ...

Radio Wave Penetration Cover And Manufacturing Method For The Same

통합된 마이크로파 회로를 갖는 저전력 레이더 레벨 게이지 시스템

... 본 발명은 신호전파장치; 마이크로파 신호소스; 마이크로파 신호소스 컨트롤러; 상기 마이크로파 신호소스로부터 송신신호와 표면으로부터 반사신호를 결합해 중간주파수신호를 형성하도록 구성된 믹서; 및 상기 믹서에 연결되고 상기 중간주파수신호를 기초로 상기 충진수위를 판단하도록 구성된 처리회로를 구비하는 레이더 레벨 게이지 시스템에 관한 것이다. 마이크로파 신호소스는 상기 송신신호에 대한 반송파로부터 100kHz 오프세트에서 -70dBC/Hz 이상의 위상 노이즈를 나타내도록 구성된다.

ENERGY STORAGE IN A RADAR LEVEL GAUGE

A radar level gauge using microwaves for measuring a level of a surface of a product in a container, comprising a microwave unit, processing circuitry connected to said microwave unit, an interface for connecting said radar level gauge externally thereof, and a power management circuitry arranged to provide operating power to said microwave unit and said processing circuitry. The power management circuitry includes a temporary energy store, means for providing said temporary energy store with an intermediate voltage lower than an operating voltage required by said processing circuitry, in order to charge said energy store, and converting means, for converting an output voltage from said temporary energy store up to said operating voltage. According to this design, a sufficient amount of energy can be stored in the temporary energy store, operating at an intermediate voltage lower than the operating voltage of the radar level gauge. This output from the temporary energy store is then converted ...

SYNCHRONIZATION IN FMCW RADAR SYSTEMS

The disclosure provides a radar apparatus for estimating a position and a velocity of the plurality of obstacles. The radar apparatus includes a local oscillator that generates a first signal. A first transmit unit receives the first signal from the local oscillator and generates a first transmit signal. A frequency shifter receives the first signal from the local oscillator and generates a second signal. A second transmit unit receives the second signal and generates a second transmit signal. The frequency shifter provides a frequency offset to the first signal based on a routing delay mismatch to generate the second signal such that the first transmit signal is phase coherent with the second transmit signal.

Digitally controlled variable power amplifier

The invention relates to a digitally controlled variable power amplifier for radio frequency signals. The power amplifier has application to power amplifiers for driving the individual elements of a phased array radar system in which accurate tapering of the power supplied to individual antenna elements is desired for sidelobe control in the face of jamming and other circumstances. In this application, each power amplifier must maintain a stable phase transfer response and should remain at a high power transfer efficiency at each reduced power setting. This performance is achieved by the use of a power transistor of a segmented dual gate design. The segments of the second gate electrode are of digitally scaled widths and are individually energized to activate digitally scaled regions of the transistor. These regions are operated in a saturated class "A" mode in all power settings to achieve the desired stable phase transfer response and high power added efficiency.

Multi-purpose sensor and data link

Modulating digital data onto a carrier frequency and then amplitude modulating the result with a waveform of a different frequency permits measuring position and velocity of an elevator cab while transmitting digital data to the cab.

Mines having tuned passive electromagnetic reflectors to enhance radar detection

Metal structures that are resonant to electromagnetic waves are combined with land mines to make them easier to detect using Ground Penetrating Radar. Knowledge of the resonant characteristics in the metal structures enhances detection and identification.

TIME-ENCODED MESSAGING FOR RADAR CASCADED SYNCHRONIZATION SYSTEM

A method for synchronizing a cascaded RADAR system (80) includes modulating (320) with a master RADAR system (12), an amplitude of a sequence of clock cycles of a clock (70) in response to a Ramp Frame Start (RFS) signal (92). The master RADAR system determines (322) a duration (310, 312, 314) of the sequence of clock cycles based on a code. A slave RADAR system (14) demodulates (324) the sequence of clock cycles to recover the clock and the RFS signal, wherein a clock leading edge of the clock is phase aligned to an RFS leading edge of the RFS signal. The slave RADAR system decodes (326) the code from the duration of the sequence of clock cycles, wherein the code determines an action performed by the slave RADAR system in response to receiving a data signal from the master RADAR system.

Radar sensor including a radome

A radar sensor for motor vehicles includes a printed circuit board which carries the mass and antenna structures of the radar sensor, and includes a housing accommodating the printed circuit board, the housing being formed on a transmit and receive side of the radar sensor by a radome which is transparent to radar radiation, characterized in that the radome has an essentially plane wall oriented obliquely to the printed circuit board.

Scalable radar signal processing system

A scalable radar signal processing system for processing data between a data source and a receiving terminal, in which a bus system is connected in parallel on at least one DSP (Digital Signal Processor) node, to a corresponding number of standard DSP cards as well as components for user data delivery and for user data collection. Each DSP node is operated with the same software and all the signal processing algorithms are executed on a user data component assigned to the corresponding node.

Depth Sensor, Detection System, And Method for Controlling A Transmit Power of The Depth Sensor

A depth sensor, a detection system, and a method for controlling a transmit power of the depth sensor are provided, wherein the control method comprises procedures of: obtaining priori information of a to-be-measured working environment; presetting priori information of the to-be-measured working environment; working out position information and orientation information of the active sensor based on the preset priori information of the to-be-measured working environment and detected information; and working out a maximum transmit power based on the position information and the orientation information of the active sensor and correspondingly dynamically adjusting the transmit power of the active depth sensor based on the maximum transmit power. The present disclosure has advantages of smartly and dynamically adjusting the transmit power and reducing power consumption of a device with the active depth sensor.

ANTENNA-INTEGRATED MODULE AND RADAR DEVICE

An antenna-integrated module includes: a substrate; one or more semiconductor chips each arranged on the substrate; and one or more antenna elements that are connected to the one or more semiconductor chips. At least one antenna element among the one or more antenna elements is arranged in the same region on the substrate on which the one or more semiconductor chips are arranged.

RADAR SENSOR

CIRCUIT CONFIGURATION FOR RADAR APPLICATIONS

SCANNING APPARATUS

ANTENNA DEVICE

RADAR APPARATUS AND RADAR APPARATUS FOR MOTOR VEHICLE

PROBLEM TO BE SOLVED: To provide a radar apparatus for controlling a gate power source and drain power source of an MMIC (Microwave Monolithic IC), protecting the MMIC at start-ups and stops, and avoiding the occurrence of failure in the MMIC due to residual electric charge at stops and anomalous source potential. SOLUTION: The radar apparatus is provided with a second power source control means (timer circuits 510 and 512) for controlling the start-up of a power source so that the gate power source of a field effect transistor (FET) of an IC for high frequencies may start up prior to the drain power source; a third power source control means (charge extraction circuit part 509) for controlling the stopping of the power source so as to be stopped after the drain power source; and a first power source control means (a drain power source control circuit part 511 for radio frequencies) for turning off the drain power source of the FET of the IC for high frequencies when it is detected that ...

Средство для блокирования радиоуправляемых взрывателей

Изобретение относится к средствам борьбы с минами и другими взрывоопасными предметами, имеющими радиовзрыватели и предназначено для защиты от радиоуправляемых взрывных устройств. Устройство содержит первый формирователь периодического нелинейно изменяющегося напряжения, первый генератор, управляемый напряжением, задатчик постоянного напряжения с возможностью его изменения, второй генератор, управляемый напряжением, двухвходовой сумматор сигналов, полосовой фильтр на весь диапазон защищаемых частот от нижней частоты fн до верхней частоты fв, двухпозиционный переключатель и устройство управления этим двухпозиционным переключателем, измеритель напряжения формирователя нелинейно изменяющегося напряжения, задатчик напряжения, пропорционального нижней границы частотного окна, задатчик напряжения, пропорционального верхней границы частотного окна, устройство включения режима частотного окна, передатчик, полосовой фильтр на весь диапазон защищаемых частот от нижней частоты fн до верхней частоты ...

ВОЛНОВОДНЫЙ РАДАРНЫЙ УРОВНЕМЕР НЕПРЕРЫВНОГО ИЗЛУЧЕНИЯ С ЧАСТОТНОЙ МОДУЛЯЦИЕЙ

Предложен радарный уровнемер (2) FMCW-типа, предназначенный для определения расстояния до поверхности (7) продукта, находящегося в резервуаре (5), и содержащий трансивер (11), выполненный с возможностью посылать передаваемый электромагнитный сигнал и принимать возвращенный электромагнитный сигнал, отраженный от поверхности (7). Передаваемый электромагнитный сигнал имеет ширину полосы по меньшей мере 1 ГГц, отношение граничных частот (отношение максимальной частоты к минимальной) меньше 2,5 и верхнюю граничную частоту меньше 4 ГГц. Уровнемер (2) содержит механически подвешенный однопроводной зонд (9), входящий в продукт (6), находящийся в резервуаре (5), и согласующий компонент, обеспечивающий электрически согласованное соединение герметизированного электрического проходного ввода (21) и зонда (9). В предложенном уровнемере относительно дорогая успокоительная трубка, известная из уровня техники, заменена относительно дешевым однопроводным зондом (9), выполняющим функцию волновода поверхностной ...

Устройство измерения уровня заполнения для определения топологии поверхности заполняемого материала

Использование: изобретение относится к устройству измерения уровня заполнения для определения топологии поверхности заполняемого материала. Сущность: устройство (100) измерения уровня заполнения для определения топологии поверхности (107) заполняемого материала содержит антенный узел (130) с по меньшей мере тремя антенными устройствами (132, 134, 136), которые выполнены, соответственно, для передачи радиолокационного сигнала и для приема сигнала, отраженного от поверхности (107) заполняемого материала. Кроме того, устройство измерения уровня заполнения содержит блок (101) управления, причем антенный узел (130) имеет по меньшей мере три антенные плоскости (133, 135, 137), вектора нормалей к плоскостям которых ориентированы поперечно друг к другу, причем на каждой антенной плоскости (133, 135, 137) размещено антенное устройство (132, 134, 136), так что с помощью каждого антенного устройства может регистрироваться различный пространственный угловой диапазон (138, 140, 142). При этом антенные ...

СПОСОБ КЛАССИФИКАЦИИ ОБЪЕКТОВ ПО МЕЖЧАСТОТНОМУ КОРРЕЛЯЦИОННОМУ ПРИЗНАКУ

Изобретение относится к радиотехнике, в частности к цифровой обработке радиолокационных сигналов. Техническим результатом является повышение эффективности классификации обнаруженных объектов по их продольному размеру. Заявленный способ классификации обнаруженных объектов по межчастотному корреляционному признаку включает формирование оценки модуля межчастотного коэффициента корреляции с нормировкой на основе двух выборок наблюдений, принятых за несколько обзоров на двух несущих частотах РЛС, и сравнение этой оценки с порогом в элементе дальности с обнаруженным объектом с присвоением при непревышении этого порога признака объекта с большим продольным размером. Формирование оценки модуля межчастотного коэффициента корреляции производится, используя для нормировки выборки наблюдений из вспомогательного независимого элемента дальности, принятые за несколько обзоров на двух несущих частотах РЛС и соответствующие предшествующему соседнему элементу дальности по отношению к анализируемому. 1 з.п ...

Сверхширокополосный многочастотный радиолокатор с активной фазированной антенной решеткой и пониженным уровнем боковых лепестков в сжатом сигнале

Изобретение относится к радиолокации и может быть использовано в различных радиолокационных системах, где требуется высокое разрешение по дальности. Достигаемый технический результат – снижение уровня боковых лепестков. Указанный результат достигается за счет того, что радиолокатор содержит М активных фазированных решеток (ФАР), выполненных определенным образом, при этом каждый элемент ФАР излучает и принимает фазомодулированный сигнал (частотная модуляция рассматривается как частный случай фазовой) с несущей частотой ƒ=ƒ+Δƒ (k-1), где ƒ- нижняя несущая частота; Δƒ - интервал между несущими частотами, k=1…N, N - количество несущих излучаемого многочастотного сигнала (количество элементов решетки). На каждой несущей частоте ƒосуществляется синхронная для всех элементов фазовая модуляция с полосой частот B≤Δƒ. В результате вся полоса частот радиолокатора будет равнаЧастоты ƒвзаимно когерентны, что достигается с помощью общего опорного генератора. Принятые каждым элементом ФАР сигналы после ...

ВОЛНОВОДНЫЙ РАДАРНЫЙ УРОВНЕМЕР НЕПРЕРЫВНОГО ИЗЛУЧЕНИЯ С ЧАСТОТНОЙ МОДУЛЯЦИЕЙ

WINKELAUFLÖSENDER RADARSENSOR FÜR KRAFTFAHRZEUGE

Winkelauflösender Radarsensor für Kraftfahrzeuge, mit mehreren Antennenelementen (12) und mehreren Empfangskanälen, wobei wenigstens zwei mit demselben Empfangskanal (28/1) verbundene Antennenelemente (12) zusammen eine Richtcharakteristik mit wenigstens zwei Hauptkeulen (16) mit unterschiedlichen Hauptempfindlichkeitsrichtungen (20) aufweisen.

Radomfläche für eine HF-Antenne

Radomfläche für eine HF-Antenne (22), die in einem ersten Betriebszustand für hochfrequente, elektromagnetische Strahlung durchlässig und in einem zweiten Betriebszustand dafür reflektierend ist, dadurch gekennzeichnet, dass diese folgenden Schichtaufbau aufweist: eine erste, aus einem Halbleiter bestehende Schicht (12); eine zweite Schicht (14) aus einem elektrischen Isolator; eine dritte Schicht (16), die elektrisch leitend ist mit einem Flächenwiderstand von mindestens 1 k/☐, wobei zwischen der ersten (12) und der dritten Schicht (16) im zweiten Betriebszustand eine elektrische Gleichspannung (18) anlegbar ist, so dass in der zweiten Schicht (14) eine solche elektrische Feldstärke herrscht, bei der die erste Schicht (12) durch die Ausbildung eines Inversionskanals elektrisch leitfähig ist.

Radarvorrichtung für ein Fahrzeug

Eine Radarvorrichtung für ein Fahrzeug weist auf: eine Radareinheit (100), die an einer inneren Seite eines Kühlergrills für ein Fahrzeug vorgesehen ist; eine Mehrschicht-Sendeabdeckung (300), die in die Radareinheit eingepasst ist und an deren Frontfläche eine Mehrzahl von Sendeschichten gebildet sind, durch die ein über die Radareinheit abgestrahlter Laserstrahl sendet; und ein Montierabschnitt (500), in dem ein Verbindungskörper (C), welcher durch Verbinden der Mehrschicht-Sendeabdeckung mit der Radareinheit gebildet ist, mit einer Karosserie (B) verbunden ist.

Frequency synthesizer for time base generator of level measuring device, has fractional frequency divider operated with periodical divider factor sequences whose periodical length is shorter in specified range

The synthesizer has a phase locked loop including a phase frequency discriminator, a rule oscillator, a fractional frequency divider and a loop filter. The fractional frequency divider is provided between a reference oscillator i.e. quartz oscillator, and the phase locked loop. The fractional frequency divider is operated with periodical divider factor sequences, and periodical length (T) of the divider factor sequences is shorter in range of 10 bit or less than 10bit, such that failure based on the divider factor sequences is restrained by the loop filter.

Pulsing receiver e.g. for ultrasonic diagnostic apparatus

The receiver includes a receiving unit (10) that receives a pulsing corresponding an information regarding the position in a predetermined opening. A weighing processor (20) varies the input signal obtained from the receiving unit.A calculator (30) obtains the propagation direction of pulsing attained to the position of a wave source based on the weighing processor ...

Anzeigevorrichtung

Ocean surface current mapping with bistatic HF Radar

Method for generating an array antenna and the array antenna thereof

Ocean surface current mapping with a bi-static radar system

A bi-static radar system 100 is provided for mapping of oceanic surface conditions. The system 100 includes at least one transmitter 102 positioned in a location separated from at least one receiver 106. Both transmitter 102 and receiver 106 have a local oscillator locked to a GPS signal received by a GPS circuit 134 to provide coherency between the transmitted and received signals. A signal processing means may be provided for determining current velocity within a scattering cell using a Doppler shift of the radar echoes measured by the bi-static radar system.

Ship's emergency event monitoring systems

Mine detector and inspection apparatus

Synchronisation of multiple radars operating in the same frequency band

A means for synchronisation of multiple radar stations is disclosed wherein common timing signals may be used to allow the radar stations to operate simultaneously and share the same frequency. A number N of radar stations are assigned a number from 0 to N. Consecutive sweep modulation start times are numbered from 0 to N wherein each numbered sweep time corresponds to a radar station having the same number. Signals are transmitted and received from the radar station as ordered by the corresponding sweep time. A sweep modulation order may be determined that provides the lowest total time between a sweep start time for a first radar station and a sweep start time for a Nth radar station in order to maximise usage of the available bandwidth. The plurality of consecutive sweep modulation start times may be dictated by GPS signals 130. The consecutive sweep modulation start times may also be dictated by the relative site geometries of each station.

Resonant reflector assembly and method

RADAR DETECTION AND DYNAMIC FREQUENCY CHOICE FOR WIRELESS LOCAL OF NETWORKS

Mine detector and inspection apparatus

Scanning apparatus

RADAR APPARATUS

A range-direction frequency domain converting unit (231-1) converts reception video signals into signals in a range direction frequency. A hit-direction frequency domain converting unit (232-1) converts the signals in the range direction frequency into signals based on the velocity and the range direction frequency so that the target Doppler frequency belongs to the sarne velocity bin number independently of variations in frequencies of transmission signals. A correlation unit (233-1) generates signals based on the velocity separated for each of the transmission frequencies and a range after correlation. An integration unit (234-1) generates band-synthesized signals based on the velocity and a range after correlation. A candidate target detecting unit (241) detects candidate targets based on the signal intensity from the output signals of the integration unit (233-1). A target relative velocity/relative range/arrival angle calculating unit (242) calculates the relative velocity, the relative ...

LOW POWER RADAR LEVEL GAUGE SYSTEM WITH INTEGRATED MICROWAVE CIRCUIT

A radar level gauge system comprising a signal propagation device (7); a microwave signal source (45); a microwave signal source controller (55); a mixer (48) configured to combine a transmit signal from the microwave signal source and a reflection signal from the surface to form an intermediate frequency signal; and processing circuitry (5, 52, 55) coupled to the mixer and configured to determine the filling level based on the intermediate frequency signal. The microwave signal source is configured to exhibit a phase noise greater than or equal to -70dBc/Hz P 100 kHz offset from a carrier frequency for the transmit signal.

DUAL DIFFERENTIAL DOPPLER MOTION DETECTION

A motion detector has an RF transceiver configured to transmit a first frequency RF signal and a second frequency RF signal into an area where motion is to be detected. A frequency difference between the first frequency signal and the second frequency signal is small and chosen to cause a calculated range dependent Doppler phase shift between the first frequency and the second frequency. The two resulting Doppler shift signals have a frequency dependent on the movement speed of an object in the area, and a difference in amplitude or signal strength between the Doppler shift signals remains relatively invariant as a function of range for a moving object in the area in comparison with an amplitude or signal strength of the Doppler shift signals. Signal level or signal power of a difference in amplitude between the Doppler shift signals is analyzed for the purpose of movement or range detection.

Power line inspection UAV obstacle avoidance radar holder based on millimeter wave technology

Radar cover and manufacturing method of the same

High precision atmosphere refractive index error computing method

Guided Wave Radar Level Gauge System With Reduced End Of Probe Reflection

Guided wave radar level gauge system with reduced probe reflection end

DETECTOR OF SUPERSATURATION Of OBJECTIVE FOR a RADAR SYSTEM

MARK OUT RADAR

BALISE RADAR

A.BALISE RADAR. B.ELLE COMPREND UNE ANTENNE A FENTE D'EMISSION ET UNE ANTENNE A FENTE DE RECEPTION QUI SONT DISPOSEES SENSIBLEMENT DANS LA MEME DIRECTION AXIALE, ET UN DISPOSITIF D'EMISSION ET UN DISPOSITIF DE RECEPTION QUI SONT RELIES, DANS LE SENS AXIAL, A CHAQUE EXTREMITE DES ANTENNES A FENTE DE FACON A FORMER UN SEUL CORPS. CE CORPS EST PROTEGE EXTERIEUREMENT PAR UN BOITIER EN FORME DE DOME EN UN MATERIAU TRANSPARENT PERMEABLE AUX ONDES RADIO-ELECTRIQUES. C.APPLICATION POUR EQUIPER LES CANOTS, RADEAUX ET BOUEES DE SAUVETAGE.

SUPPORT FOR HOUSING AND CAP ASSOCIATED GLIDER FOR COLLISION AVOIDANCE

레이더 시스템을 위한 복합식 온도 조절 장치

... 레이더 시스템을 위한 복합식 온도 조절 장치를 공개한다. 본 발명은 레이더 시스템의 기설정된 경로를 통과하며 열을 흡수한 공기를 인가받고, 액체 상태의 냉매를 인가받아 팽창시키고 증발시켜, 공기를 냉각하여 레이더 시스템으로 공급하는 공냉 모듈부, 레이더 시스템의 기설정된 경로를 통과하며 열을 흡수한 냉각 액체를 인가받고, 액체 상태의 냉매를 인가받아 냉매를 팽창시키고 증발시켜, 인가된 냉각 액체를 냉각하여 저장하며, 저장된 액체를 펌핑하여 레이더 시스템으로 공급하는 수냉 모듈부, 및 공냉 모듈부 및 수냉 모듈부로부터 인가되는 기체 상태의 냉매를 압축하고, 압축된 냉매를 응축하여 액체 상태의 냉매로 액화하여 공냉 모듈부 및 수냉 모듈부 중 적어도 하나로 순환시키는 공통 모듈부를 포함한다.

Transmission Member of Electromagnetic Wave of Radar For Vehicle

다기능 레이더 조립체

... 본 발명은 적어도 하나의 레이더 빔을 송신 및/또는 수신하기 위한 레이더 조립체(10, 60)와 관련되며, 상기 레이더 조립체는 안테나 조립체(12, 62, 64)를 포함한다. 상기 안테나 조립체는 복수의 송신 안테나 요소(20)를 갖는 송신 안테나 장치(14)를 포함한다. 상기 송신 안테나 요소에 대해 제어 신호를 생성하기 위해, 레이더 조립체는 제어 장치(42)를 포함한다. 상기 안테나 조립체는 복수의 수신 안테나 요소(22)를 갖는 제1 수신 안테나 장치(16)를 포함한다. 상기 송신 안테나 장치는 제1 안테나 세그먼트(24) 및 제2 안테나 세그먼트(26)를 포함하며, 상기 세그먼트는 서로 이격되어 배열되고, 각각은 직선 경로를 따라 배열되는 복수의 송신 안테나 요소를 가진다.

Reconfigurable RF front end and antenna arrays for radar mode switching

Concepts and examples pertaining to reconfigurable radio frequency (RF) front end and antenna arrays for radar mode switching are described. A processor associated with a radar system selects a mode of a plurality of modes in which to operate the radar system. The processor then controls the radar system to operate in the selected mode by utilizing a plurality of antennas in a respective configuration of a plurality of configurations of the antennas which corresponds to the selected mode. Each configuration of the plurality of configurations of the antennas results in respective antenna characteristics. Each configuration of the plurality of configurations of the antennas utilizes a respective number of antennas of the plurality of antennas.

AUTOMATED RADAR ASSEMBLY SYSTEM

DATA PROCESSING APPARATUS, RADAR APPARATUS, AND DATA PROCESSING METHOD

... [Problem] Provided is a data processing apparatus that can set a magnification factor in accordance with a distance from an antenna so as to allow the display of an object near the antenna to be easily viewed and that can easily change the setting of the magnification factor. [Solution] A buffer memory (53) stores a digital signal as converted by an A/D converter (41) in relation to a distance and an azimuth both referenced to an antenna (20). A digital filter (54) filters the digital signal read from the buffer memory (53). The digital filter replaces the value of data of interest, which is data to be processed, by a value based on the values of the data of interest and peripheral data, which is existent on the periphery of the data of interest, among the digital data stored in the memory. In accordance with the distance from the antenna to the data of interest, the digital filter changes the range of the peripheral data used in the filtering process.

SENSOR HOLDER FOR A SENSOR FOR OBJECT DETECTION

Sensor holder for a sensor (12) for object detection, comprising an assembly unit (14) for the sensor (12), a retaining frame (18) on which the assembly unit (14) is held such that it can pivot, an adjustment shaft (22) mounted on the retaining frame (18), said adjustment shaft having a screw-like guide contour (24) around the adjustment shaft (22), said guide contour engaging with a guide element (26) of the assembly unit (14); as well as a sensor unit comprising the sensor holder; and a sensor (12), particularly a radar sensor, arranged on the assembly unit (14) for object detection.

Method and System for Continuous Wave Interference Suppression in Pulsed Signal Processing

A System and Method for CW interference suppression in pulsed signal processing having a front-end, an A/D converter, a data store, and a suppressor module coupled to both the A/D converter and the data store. The front-end is operable to receive a waveform and communicate such to the A/D converter to digitize for processing by the suppressor module. The suppressor module being operable to further process the digitized waveform by way of applying a FFT to obtain a corresponding amplitude spectrum of the digitized waveform, clipping the amplitude spectrum to obtain a clipped amplitude spectrum, performing successive piece-wise IFFTs on the positive frequency points of the clipped amplitude spectrum to obtain multiple amplitude-time series, each having a frequency value assigned, and then stacking such amplitude-time series successively in the data store to form a time-frequency spectrogram array to thereby facilitate suppression of interference signals and detection of data pulses.

Method of Detecting a Scatterer in a Structure, a Radar System and a Computer Program Product

The invention relates to a method of detecting a scatterer in a structure, such as a building structure. The method comprises the steps of transmitting from one or a multiple number of positions exterior to a structure, a wall probing radar signal towards the structure. The method also comprises the step of receiving, at one or a multiple number of positions exterior to the structure, signals that have been reflected by scatterers in the structure. Further, the method comprises the step of filtering, from the received signals, reflection information of a specific scatterer at a specific position. In addition, the method comprises the step of identifying a geometry of the specific scatterer, based on the reflection information. The filtering step comprises applying a phase change algorithm corresponding to a specific scatterer type.

Method and radar apparatus for detecting target object

Disclosed is a method and a radar apparatus for transmitting a transmission signal at a controlled timing in order to avoid signal interference, thereby exactly detecting a target object without misrecognition.

Systems and methods for calibrating dual polarization radar systems

A dual polarization radar system is calibrated based on real-time data measurements, such as measured horizontal and vertical reflectivities, Z H and Z V . In this regard, the radar system analyzes the reflected power measurements to identify which measurements are associated with reflections from a respective spherical object. Using such measurements, the system determines a system differential reflectivity value, and combines such value with reflected power measurements for calibration. Since the calibration is based on real-time data measurements, the calibration process may run simultaneously with the collection of weather data. Further, the calibration process is immune to the weather events within range of the radar system. Accordingly, it is possible for the calibration to be performed at any time and without interfering with the weather monitoring activities regardless of the types of weather events occurring within the vicinity of the radar system.

Filling level measuring device antenna cover

A filling level measuring device antenna cover includes a base body and a plurality of circular fins concentrically arranged on the base body, wherein the fins and the base body consist of a plastic material. The fins and the base body are one piece and injection-moulded.

Wireless Communication System Applied To Aviation Industry And Airband Interference Detection Method

Provided is a wireless communication system capable of increasing safety in the aviation industry, and applicable to the aviation industry. The wireless communication system comprises a control device and a spectrum sensor. The spectrum sensor performs spectrum sensing using a measurement SAP, receives a signal from a wireless communication device, and transmits information relating to the received signal as sensing information through a communication SAP. On the other hand, the control device receives the sensing information from the spectrum sensor through the communication SAP. Subsequently, the sensing information is analyzed using an application SAP. Thereby, whether or not the signal from the wireless communication device interferes with the radio waves of the airband used in the aviation industry is specified.

System and method for detecting concealed explosives and weapons

A method for detecting hidden explosives or weapons, including transmitting a signal in different polarization channels towards an object, the next stage includes collecting back scattered energy in different polarization channels from the object, the next stage includes determining parameters that are dependent upon the transmitted signal polarization channels and the backscattered energy polarization channels, and providing an indication if there are hidden explosives or weapons in the object based on the parameters.

Analyzing data from networked radar detectors

A radar detector accesses a network interface module that enables communication of data to and from a server. The server executes analysis algorithms that analyze data received from multiple radar detectors to develop predictions about the likelihood of future alerts or threats in geographic locations. The server communicates the predictions to each of the radar detectors based on the geographic locations corresponding to each of the radar detectors. Each radar detector communicates alert levels as needed to its corresponding radar detector user based on predictions that correspond to the geographic locations corresponding to each of the radar detectors.

Pulse radar apparatus and control method thereof

The invention provides a pulse radar apparatus, and a control method thereof, that permits to readily downsize and to lower its cost and allows information on an object to be detected in high precision by removing an influence of noise when a gain of a variable gain amplifier is discontinuously changed corresponding to detected distance, with a simple configuration. A variable gain amplifier 135 configured to adjust a gain corresponding to a distance gate is used to be able to detect weak reflected wave from a distant object and to amplify a reflected wave from a short distance with a low gain. An offset noise from the variable gain amplifier 135 is prepared together with interference noise and self-mixing noise in advance as a replica signal of unwanted wave and the replica signal is removed from a baseband signal in detecting the object T.

Method and apparatus for dynamic frequency selection in wireless local area network system

A method of dynamic frequency selection by an access point (AP) in a basic service set (BSS) in a wireless local area network is provided. The access point configured to communicate over a primary subchannel and a secondary subchannel. The method includes: transmitting a frame including a quiet element and a quiet channel element; and performing channel measurements in the quiet interval. The quiet element defines an quiet interval during which no transmission occurs, the quiet channel element indicates that the secondary subchannel is to be quieted during the quiet interval, and the quiet channel element indicates a condition under which the primary subchannel may be used during the quiet interval.

Radar sensor and method for controlling same to reduce the crosstalk of digital signals to the hf radar signal

The radar sensor has a transceiver device for generating a radar signal having a settable output power, a control unit and an interface unit. The transceiver device may be controlled via a digital interface via the interface unit and the control unit. One of the lines of the interface is connected to the control unit, the control unit being designed in such a way that when a predetermined level is present on this line, the output power of the transceiver device is lowered.

Smart channel selective repeater

A system and method for processing signals in a selected channel through a repeater wherein the repeater is dynamically adapted to the channel by receiving channel information from a local cell phone, such information including modulation and channel designation.

Sensor Head

An apparatus includes a sensor head including a continuous wave metal detector (CWMD), a radar, and a transceiver electrically connected to the radar. The radar includes a transmit antenna configured to transmit electromagnetic radiation, and a receive antenna configured to sense electromagnetic radiation. The transceiver is enclosed in a metal housing.

DETECTION AND ESTIMATION OF RADIO FREQUENCY VARIATIONS

A system including a sampling module that generates samples of RF signals on a first channel during first, second, and third periods, which do not overlap. A difference module determines a first difference between i) a first count of polarity reversals during the first period and ii) a second count of polarity reversals during the second period; a second difference between i) the second count and ii) a third count of polarity reversals during the third period; and a third difference between the first and second differences. A third module determines a frequency of the RF signals based on at least one of the first and second counts, determines a frequency variation of the RF signals based on the first and second counts, and identifies a radar type of the RF signals based on at least one of the third difference and the frequency variation. 1a sampling module configured to generate a plurality of samples of radio frequency signals on a first channel during each of a first period, a second period, and a third period, wherein the first period, the second period, and the third period do not overlap one another; a first difference between i) a first count of polarity reversals during the first period and ii) a second count of polarity reversals during the second period,', 'a second difference between i) the second count of polarity reversals during the second period and ii) a third count of polarity reversals during the third period, and', 'a third difference between i) the first difference and ii) the second difference; and, 'a difference module configured to determine'} determine a frequency of the radio frequency signals based on at least one of the first count and the second count,', 'determine a frequency variation of the radio frequency signals based on the first count and the second count, and', 'identify a radar type of the radio frequency signals based on at least one of the third difference and the frequency variation., 'a third module configured to'}. A system ...

WIRELESS CONNECTIVITY IN A RADAR DETECTOR

Wireless and other external connectivity technology is used in various ways to enhance or improve upon existing radar detector and police activity detection systems. External memory interfaces, such as SD cards or USB, provide external storage. Wireless interfaces such as Bluetooth, Zigbee, 802.11, and wireless personal area network communication protocols, allow a detector processor to interact wirelessly with external devices, such as a Bluetooth headset, a cellular network device providing a server connection, or toggle buttons used to indicate the presence of police activity at a current position. Further, radar detectors are upgraded to provide GPS capabilities, using the existing power/data connector of the radar detector. 1. A police activity detector , comprising:a receiver for detecting electromagnetic signals generated in the context of police activity,a processor coupled to said receiver and evaluating electromagnetic signals received by said receiver to determine whether a warning is to be issued, the processor operating under control of software and/or data, anda first wireless device interface comprising a radio compliant with a wireless personal area network communication protocol,the processor interacting wirelessly with an external device via said first wireless device interface and connecting to a cellular device providing an Internet connection, the cellular device exchanging data with a remote server via said Internet connection,wherein the external device comprises a global positioning receiver, a display, and a second wireless device interface connectible to the first wireless device interface, the display generating alerts of radar when detected by the radar detector, and presenting a map representing the geographic location of the external device.2. The detector of wherein the processor receives signal information data from said remote server via said cellular device and Internet connection and uses the same in determining whether to issue a ...

Ic tag searching apparatus

An IC tag searching apparatus capable of changing the shape of its searching board in a simple manner in accordance with the situations of a location to be searched, said location includes wide to narrow areas and areas in the corners, at the time of searching the positions of wireless IC tags those which are embedded in a concrete construction and the like, efficiently detecting the positions of the embedded wireless IC tags and performing reading and writing of information from/to the wireless IC tags is provided. The IC tag searching apparatus 10 according to the present invention comprises a plurality of plate members 2, 3 each having an antenna built-in, said plate members may be joined with each other in a direction of those flat surfaces, respectively, a joining means provided to the plate members having an antenna built-in and information transmission/reception section 11 for performing data transmission/reception between the plate member having an antenna built-in and the R/W main body 9.

INTELLIGENT RADAR DETECTION DEVICE AND METHOD THEREOF

An intelligent radar detection device and method thereof comprise an airport signal detection device detecting a specific airport signal intensity for judging if the device enters an airport, a radio communication device identifying a takeoff of the airplane and reporting location information of the device after the airplane lands, a GPS device acquiring GPS data to ensure the location information, and a system power respectively connected to the radio communication device, the airport signal detection device, and the GPS device. The radio communication device is respectively connected to the airport signal detection device and the GPS device. The present invention for locating and tracking packages and goods transported through aviation can automatically identifies if the device enters the airport to turn off the radio communication function. The present invention also automatically identifies the takeoff of and the landing of the airplane to turn on the radio communication function. 1. An intelligent radar detection device comprising an airport signal detection device applied to detect a specific airport signal intensity for judging if said device enters an airport , a radio communication device identifying a takeoff of an airplane and reporting location information of said device after said airplane lands , a GPS device acquiring GPS data to ensure said location information of said device , and a system power;said radio communication device being respectively connected to said airport signal detection device and said GPS device; said system power being respectively connected to said radio communication device, said airport signal detection device, and said GPS device.2. The intelligent radar detection device as claimed in claim 1 , wherein claim 1 , said airport signal detection device is an inspection device for secondary surveillance radar signal.3. The intelligent radar detection device as claimed in claim 1 , wherein claim 1 , said airport signal detection ...

Sensor Mounting for a Distance Sensor

The invention relates to a sensor mounting ( 5 ) for a distance sensor ( 6 ), said sensor mounting ( 5 ) having at least the following: a fixing part ( 12 ) for attaching to a vehicle ( 1 ), and a receiving part ( 14 ) that is attached to the fixing part ( 12 ) in an adjustable manner in order to receive the distance sensor ( 6 ), said receiving part ( 14 ) being adjustable into at least two different angular positions on the fixing part ( 12 ).

ANALYZING DATA FROM NETWORKED RADAR DETECTORS

A radar detector accesses a network interface module that enables communication of data to and from a server. The server executes analysis algorithms that analyze data received from multiple radar detectors to develop predictions about the likelihood of future alerts or threats in geographic locations. The server communicates the predictions to each of the radar detectors based on the geographic locations corresponding to each of the radar detectors. Each radar detector communicates alert levels as needed to its corresponding radar detector user based on predictions that correspond to the geographic locations corresponding to each of the radar detectors. 1. A networked electromagnetic signal detector , comprising:an electromagnetic signal detector;a communication element that receives data from a server, wherein said data comprises information associated with at least one geographic location;a location identifier operatively associated with said electromagnetic signal detector, wherein said location identifier determines a geographic location associated with said networked electromagnetic signal detector;a processing component which determines a prediction of an alert level, wherein said prediction is based on an analysis of said data and said geographic location associated with said networked electromagnetic signal detector;a user interface to communicate said prediction to a user of said networked electromagnetic signal detector.2. The networked electromagnetic signal detector of claim 1 , wherein said communication element further facilitates transmission of data based on a detection of an electromagnetic signal by said networked electromagnetic signal detector to said server.3. The networked electromagnetic signal detector of claim 1 , wherein said data is aggregated from at least one networked electromagnetic signal detector.4. The networked electromagnetic signal detector of claim 3 , wherein said server aggregates said data from at least one networked ...

System and method for monitoring objects, people, animals or places

An improved system and method for monitoring objects, people, animals, or places uses a passive Modulating Reflector (MR) tag where a characteristic of an antenna is modified according to a time-varying pattern by a modulating network thereby causing the reflective characteristics of the antenna to vary in accordance with the time-varying pattern. When an interrogator transmits an RF waveform that impinges on the antenna, the return signal reflecting off the antenna is modulated in accordance with the time-varying pattern allowing a remote receiver to demodulate information from the modulated return signal. The antenna is embedded in a dielectric material. The MR tag can be used with a wide variety of tag-interrogator configurations employing monostatic and/or bistatic radar techniques to allow monitoring, locating, and/or tracking of objects, people, animals, or place with which MR tags are associated.

RADAR DETECTOR THAT INTERFACES WITH A MOBILE COMMUNICATION DEVICE

An electromagnetic signal detector that interfaces with a mobile communication device that includes a communication element. The communication element transmits data between the electromagnetic signal detector and the mobile communication device via a first communication standard. A user interface of the mobile communication device communicates the data to a user of the electromagnetic signal detector. The mobile communication device communicates with a communication network via a second communication standard. The first communication standard differs from the second communication standard. 1. An electromagnetic signal detector that interfaces with a mobile communication device , comprising:a communication element that facilitates communication of data between said electromagnetic signal detector and said mobile communication device via a first communication standard, wherein a user interface of said mobile communication device is operable to manage at least one operation of said electromagnetic signal detector, wherein said mobile communication device is operable to communicate with a communication network via a second communication standard, and wherein said first communication standard differs from said second communication standard.2. The electromagnetic signal detector of claim 1 , wherein at least one of said user interface of said mobile communication device and said electromagnetic signal detector communicates said data to a user of said mobile communication device.3. The electromagnetic signal detector of claim 2 , wherein said data communicated to said user is based at least partially on a user input via said user interface.4. The electromagnetic signal detector of claim 2 , wherein said data communicated to said user is based at least partially on a mode of operation claim 2 , wherein said mode of operation is determined by at least one of a user input claim 2 , a geographic location associated with said mobile communication device claim 2 , a speed claim ...

Device for Alerting and Preventing Radar and Laser Measurements

A device for alerting to and/for preventing radar and/or laser measurements, comprising a central processing unit, a radar detection unit and/or a laser detection unit, which is/are connected to the central processing unit, memory for software that can be loaded into the central processing unit, an alerting unit which is connected to the central processing unit, and a location determination unit, such as a GPS unit, which is connected to the central processing unit and can transmit location information to the central processing unit. The central processing unit being designed to deliver an alarm signal, an interference signal and/or another signal upon detection of a radar signal or laser signal, and wherein the central processing unit is designed to change one or more settings of the device in response to the location information. 1. A radar detection device , comprising:a central processing unit;a radar detection unit connected to the central processing unit; anda location determination unit connected to the central processing unit which provides location information to the central processing unit, the central processing unit changing at least one setting of the device in response to the location information.2. The device of claim 1 , wherein the at least one setting of the device which may be changed may be comprised of one or more of the following:the frequency at which scanning takes place; the bands at which scanning takes place, the bandwidths at which scanning takes place; the frequency of a received signal at which an alarm signal is delivered; the bands of a received signal at which an alarm signal is delivered, the bandwidths of a received signal at which an alarm signal is delivered; the type of radar signals being transmitted; the detection sensitivity; the duration of scanning intervals, the frequency of scanning intervals, the detection threshold; the alarm sensitivity; the turning on or off of the radar detection unit; the deletion of software from a ...

MODE S ANTI-REFLECTION ALGORITHM FOR ELIMINATING FALSE TRACKS DUE TO REFLECTED REPLIES IN GROUND RADAR SYSTEMS

A Mode S anti-reflection method for eliminating false tracks due to reflected replies in ground radar systems, wherein the information contribution of the replies (at the level of raw video) is analysed with the aim of calculating the position of the reflectors. The possible presence of ADS-B reports can be used, otherwise it will be effectuated a geometrical analysis of the distribution of the replies and will be compared with the plot(s) extracted by the radar sensor. The possibility of correlating along time the moving of the plots, their place of origin and average duration of the tracks generated by them will allow to understand whether the plot is relevant to a reflection or not. In the case of “reflection”, a reflectors map is updated automatically in order to avoid the enabling of the inizialization of the track in that area. 1. Method for eliminating false Mode S SSR or 3A code tracks on radar display created by a radar extractor of a radar as a consequence of false replies , i.e. replies reflections against reflectors , a reflector being natural or artificial object different from an aircraft target , the radar comprising the radar extractor and a radar tracker , the method being characterised by the execution of the following steps:A. Creating a raw video map, that is extended to the area covered by the radar and is subdivided into cells of predefinable dimensions, each cell delimiting a portion of the area wherein a aircraft target can be present, to each cell being associated a probability of presence of false replies in such a cell; B0. Identifying replies clusters, i.e. two or more replies sets closer to each other in azimuth and range than corresponding predefined threshold values;', 'B1. Associating to each cell of the raw video map a power level received by the radar in the corresponding area portion;', 'B2. Extracting the plots, i.e. replies cluster average points determined in case a replies set has a number of replies greater than a pre-defined ...

Device for Warning of Radar Traps

The invention relates to a device for warning of radar traps or speed radar signals, comprising a radar detection antenna, a central processing unit, which is connected to the radar detection antenna, an alert device or unit, which is connected to the central processing unit and which is designed for delivering an alarm, wherein the central processing unit is designed for determining at least one characteristic of the signal received by the radar detection antenna and for causing the alert device to deliver an alarm or suppress the delivery of an alarm in dependence on least one determined characteristic. 1. A radar detector for alerting a user of a speed radar signal comprising:a radar detection antenna for receiving a signal;an alert unit for alerting the user of the presence of a speed radar signal;a central processing unit connected to the antenna and the alert unit which determines at least one characteristic of the signal and controls the delivery of an alarm to the alert unit based upon the at least one characteristic.2. The radar detector of claim 1 , wherein the at least one determined characteristic is comprised from at least one of the following:the structure of the amplitude of the signal over a predetermined distance covered by the vehicle;the modulation frequency of an amplitude modulation signal;the modulation depth of an amplitude modulation signal;the modulation frequency of a frequency modulation signal;the frequency sweep of a frequency modulation signal;the phase of a phase modulation signal;the modulation frequency of a phase modulation signal;the duty cycle of a pulse modulation signal;the modulation frequency of a pulse modulation signal;the frequency stability of the signal; orthe phase noise of the signal.3. The radar detector of claim 1 , wherein control of the alarm is by transmitting an alarm signal to the alert unit.4. The radar detector of claim 1 , wherein control of the alarm is by suppressing the transmission of an alarm signal to ...

TRANSMITTER AUGMENTED RADAR/LASER DETECTION USING LOCAL MOBILE NETWORK WITHIN A WIDE AREA NETWORK

A radar/laser emission detector is augmented with a cellular communications capability to provide the capability to share emission detection information amongst drivers to give other drivers even more advanced warning. A network of a plurality of cellular augmented radar/laser emission detector devices may be formed, each having the capability to source the location of radar or laser emission detections to others requesting access to such information, and each being warned when within a proximity of a recent radar or laser emission detection reported by at least one of the plurality of hybrid radar/laser detector devices. A local area, mobile area wireless network (MAWN) is formed in a cellular network to share radar/laser detection information among drivers. Mobile Position Centers (MPCs) are provided in ANSI-41 networks and Gateway Mobile Location Centres (GMLCs) (GSM networks), to determine other members that are proximate to a device that is detecting radar emission. 120-. (canceled)21. A method of forming a mobile area wireless network within a wide area network , comprising:populating a physical warning database with current location information for each of a plurality of wireless warning detectors in motion;querying said physical warning database to determine a subset of said plurality of wireless warning detectors in motion that are proximate to a given wireless warning detector in motion; andtransmitting a warning event, local to said given wireless warning detector, to only said subset of said plurality of wireless warning detectors in motion.22. The method of forming a mobile area wireless network within a wide area network according to claim 21 , further comprising:transmitting detection of a radar emission by said given wireless warning detector in motion to only said subset of said plurality of wireless warning detectors in motion.23. The method of forming a mobile area wireless network within a wide area network according to claim 21 , further ...

MULTI-BAND SCANNING FOR RADAR DETECTION IN WI-FI SYSTEMS

Systems and methods are described herein for determining the presence of radar signals within the 5 GHz band using an active communications channel and a portion of the channels adjacent to the active channel. The access point radio may collect the bandwidth of the active and adjacent channels concurrently to avoid having to tune to each channel separately. Further, the radar scanning and a portion of the active channel processing may be completed simultaneously to improve access point utilization. 1. A device comprising:a radio to receive signals on an active channel in a 5 GHz band, the signals comprising a wide bandwidth including a bandwidth of the active channel and excess bandwidth adjacent to the active channel; anda radar scanning engine to scan for a radar signature within the signals.2. The device of claim 1 , wherein the radar scanning engine scans for the radar signature in a Dynamic Frequency Selection (DFS) portion of the 5 GHz band.3. The device of claim 1 , further comprising a signal processing module to process the signals by filtering out signals in the excess bandwidth and to downsample signals active channel signal.4. The device of claim 3 , wherein the radar scanning engine scans for the radar signature while the signal processing module is processing the signals.5. The device of claim 3 , wherein the radar scanning engine scans for the radar signature prior to the processing of the signals by the signal processing module.6. The device of claim 4 , wherein the radar scanning engine scans for the radar signature simultaneously with the processing of the signals by the signal processing module.7. The device of claim 3 , wherein the signal processing module comprises a digital filtering module to filter the signals in the excess bandwidth claim 3 , the signal processing module further comprising a downsampling module to downsample signals in the active channel.8. A device comprising: a bandwidth of the active channel; and', 'a bandwidth of one or ...

Interference rejection device, radar device, and target finding method

An interference rejection device includes a change amount calculator, a detector, and a rejecter. The change amount calculator is configured to find change amounts in at least one of amplitude and phase of received signals of a plurality of sweeps in a distance direction between a first distance and a second distance. The detector is configured to detect radar interference occurring between the first distance and the second distance by comparing the change amounts calculated by the change amount calculator between the plurality of sweeps. The rejecter is configured to reduce the amplitude of the received signal corresponding to a position of the radar interference.

METHOD FOR DE-INTERLEAVING RECEIVED RADAR PULSES USING DYNAMICALLY UPDATED WEIGHTS

The present invention provides a method for separating, or de-interleaving, a stream of radar pulses, interleaved in time, received by a receiving antenna () and receiver () from several radar sources. De-interleaving the stream of received pulses may include forming clusters of pulses having similar parameter values around anchor points, where each cluster is defined by a window around its anchor point. The dimensions of each window may be determined by a weighted distance, i.e., a measure of dissimilarity, calculated using weights. Each weight may depend inversely on the measurement error in the parameter with which the weight is associated. Each anchor point may have a set of weights adjusted to its parameter values, and which may change as operating conditions change. The weights may be determined using a method including a calibration step, which may include injecting pulses with known parameters into the receiver (). 1. A method of determining whether a received pulse , in a stream of pulses received by a radar receiver , is a member of a cluster , the cluster having an anchor point , the received pulse and the anchor point each having a respective feature vector , each feature vector having a multiplicity of features , the method comprising:generating at least one weight corresponding to a feature;calculating, using the weight, a weighted distance between the feature vector of the received pulse and the feature vector of the anchor point;comparing the weighted distance to a threshold; anddetermining that the received pulse is a member of the cluster if the weighted distance is less than the threshold, injecting pulses of known characteristics into the radar receiver during operation;', 'determining the variation in the feature measured; and', 'calculating the weight as a function of the variation in the feature measured., 'wherein the generating at least one weight corresponding to a feature comprises2. The method of claim 1 , wherein the feature is selected ...

Transportable radar utilizing harmonic drives for anti-backlash antenna movement

A transportable weather radar having radar electronics functionally located above the elevational joint and a frame superstructure rotationally connected to the elevational joint onto which is mounted a parabolic radar antenna adapted for Doppler weather radar use. The radar has a rotational drive assembly mounted below and supporting the elevational joint and a harmonic drive unit positioned inside the elevational joint so that the antennae may be rotated without significant backlash during rotational changes. A hollow center in the rotational joint allows for the passing of electronics cable through the middle of the joint and down through rotating assemblies and to electronics in or adjacent to the radar pedestal.

Signal processing apparatus, radar apparatus, and signal processing method

A signal processing apparatus which calculates a correlation value between an input analog signal and a digital code includes: an adder which adds a noise signal to the analog signal; an analog comparator which compares, synchronously with a clock signal having a first period, a magnitude of the analog signal added with the noise signal with a reference voltage; a multiplier which receives an input of a comparison result from the analog comparator and the digital code and calculates, synchronously with the clock signal, an exclusive OR between the comparison result and the digital code; and a counter which accumulates calculation results from the multiplier over a second period in a time series, and calculates, as the correlation value, a difference between an accumulation result and one-half of a quotient of the second period and the first period.

Coaxial probe comprising terminating resistor

A coaxial probe is for a TDR fill-level measuring instrument, in which probe the inner conductor is connected to the outer conductor via a terminating resistor. The terminating resistor is mounted in a cylindrical recess in the inner conductor and sealed with respect to the measuring environment. In this way, the measurement of the fill level in the region of the probe end can be improved.

Radome for a radar sensor assembly

A radome for a radar sensor that includes a first and second section. Each section is formed of layers that have an electrical thickness substantially equal to an integer multiple of a guided half-wavelengths of the radar beam. Each of the sections are configured such that, at a location spaced apart from the radome, a first phase angle of the first portion of the radar beam differs from a second phase angle of the second portion of the radar beam by an amount substantially corresponding to an integer number of three hundred sixty degrees (360°) of phase angle shift.

Robot distance measuring method, apparatus and robot using the same

The present disclosure provides a robot distance measuring method and apparatus as well as a robot using the same. The method includes: obtaining a plurality of relative position parameters of a robot from a plurality of ranging sensors; determining an installation distance between each two of the ranging sensors based on the plurality of relative position parameters; determining a sum of the installation distance of each looping arrangement of the plurality of ranging sensors based on the installation distance between each two of the ranging sensors; and enabling the plurality of ranging sensors sequentially to perform obstacle ranging according to a preset looping rule. Since the adjacent ranging sensors are avoided to range simultaneously or sequentially, the interference of the adjacent ranging sensors can be minimized, the accuracy of measuring the distance of the surrounding obstacles can be improved, thereby improving the navigation performance of the robot.

RADAR DEVICE AND VEHICLE EQUIPPED WITH SAME

A detection component of a reflected wave generated due to a transmitted wave being reflected inside a radome is removed from a measurement intermediate frequency signal IFγ obtained by a mixer circuit when measuring the position of an object, the detection component of the reflected wave being removed by a radome reflection correcting unit subtracting a difference Diff. stored in advance in a correction data storage unit. In addition, when the radome reflection correcting unit performs the subtraction, the phase of the result of the subtraction is corrected by a phase shift amount ecalculated by the phase shift amount calculating unit so that a phase shift of a measurement intermediate frequency signal IFγ caused by the device temperature is corrected. A distance/angle computing unit computes the position of the object from the thus-corrected measurement intermediate frequency signal IFγ. 1. A radar device comprising:a transmission signal generator configured to generate a transmission signal;a transmission antenna configured to transmit the transmission signal generated by the transmission signal generator as a transmitted wave;a reception antenna configured to receive a reflected wave generated as a result of the transmitted wave hitting and being reflected by an object;a mixer circuit configured to mix the transmission signal transmitted by the transmission antenna and a reception signal received by the reception antenna, and to convert the transmission and reception signals into an intermediate frequency signal;a radome configured to protect the device;a correction data storage configured to store in advance a difference between a when-attached intermediate frequency signal and a when-not-attached intermediate frequency, the when-attached intermediate frequency signal being obtained by the mixer circuit when the radome is attached to the device and the when-not-attached intermediate frequency signal being obtained by the mixer circuit when the radome is not ...

RADAR TRANSCEIVER

The application refers to a radar transceiver comprising a set of transmitters (TX1, . . . , TXn) for transmitting radar chirps to targets, a set of receivers (RX 1, . . . , RXn) for receiving reflected chirps from the targets, a timing engine () coupled to the set of transmitters (TX1, . . . , TXn) and to the set of receivers (RX1, . . . , RXn) and adapted to transmit a first set of control signals to the set of transmitters (TX1, . . . , TXn) and to the set of receivers (RX1, . . . , RXn). The timing engine () is further coupled to a computing unit (). The timing engine () is adapted to receive a second set of control signals generated by the computing unit () and transmitted via a bus. The radar transceiver further comprises a sweep control unit () coupled to the timing engine () and adapted to receive a first control signal and a second control signal from the timing engine (), the first control signal indicating a precise start time of a chirp and the second control signal indicating a precise reset time for resetting the chirp. The sweep control unit () is further coupled to a controlled Phase Locked Loop (PLL) () adapted to generate a local oscillator (Master LO) signal which is adapted to be inputted to both each member of the set of transmitters (TX1, . . . , TXn) and each member of the set of receivers (RX1, . . . , RXn).

circuit configuration for radar applications

A circuit configuration for radar applications having a printed board and semiconductor modules mounted on it, each of the semiconductor modules including an integrated circuit, a rewiring layer for connecting the integrated circuit to the printed board and at least one antenna element integrated into the semiconductor module and connected to the integrated circuit for transmitting and/or receiving radar signals, the integrated circuit including at least one HF oscillator and a frequency splitter connected to the HF oscillator, the circuit configuration including phase-locked loops for controlling the HF oscillators, each of the phase-locked loops having the frequency splitter and a phase detector for comparing a split-frequency signal of the HF oscillator with a reference signal, and the reference signals may be fed to the phase-locked loops via the printed board.

RADAR SYSTEM FOR MEDICAL USE

A radar system, a medical diagnostic or therapeutic device and a method are disclosed for operating a radar system. An embodiment of the radar system includes an antenna arrangement embodied to be flat including individually actuatable transmit units for the transmission of radar signals and individually readable receive units for the receipt of radar signals. The transmit units and the receive units each include at least one antenna. Because the transmit units can be individually actuated and the receive units can be individually read out, the information content which can be obtained even without a strong spatial orientation of the radar beam, is increased. According to an embodiment of the invention, the radar system is designed to assign a radar signal received by a receive unit to the transmit unit which transmitted the radar signal received. 1. A radar system for medical use , comprising: individually actuatable transmit units for transmission of radar signals, and', 'individually readable receive units for receipt of radar signals, the transmit units and the receive units each including at least one antenna, wherein the radar system is designed for assignment of the respective radar signals received to the respective transmit units which transmitted the radar signals received., 'an antenna arrangement embodied to be flat, the antenna arrangement including'}2. The radar system of claim 1 , wherein the transmit units are actuatable using a control signal claim 1 , wherein receive signals corresponding to the radar signals received can be read out claim 1 , and wherein the radar system is designed for the assignment by correlating the receive signals with the control signal.3. The radar system of claim 2 , further comprising:a determination unit, designed for determination of motion of an examination region of a patient using the correlated receive signals.4. The radar system of claim 1 , wherein the radar system is designed for transmission of radar signals ...

Vehicle radar with beam adjustment

Methods and systems are provided for controlling a radar system of a vehicle. Sensor information pertaining to an environment for the vehicle is received from a first sensor as the vehicle is operated. A beam of the radar system is adjusted by a processor based on the sensor information.

IMAGE FORMING APPARATUS

An image forming apparatus has a photosensitive drum configured to bear a developer image, a developing apparatus having a developing roller that bears developer and a developing blade that regulates the amount of the developer on the developing roller, and a detection portion that detects information on the amount of the developer stored in the developing apparatus. The image forming apparatus performs a discharging operation for discharging a coating agent, applied to a developing roller in an unused state, from the developing apparatus to the photosensitive drum, while varying an operational condition for the discharging operation varied based on the information. 113.-. (canceled)14. An image forming apparatus comprising:an image bearing member configured to bear a developer image;a developing apparatus having a developer bearing member that bears developer and a regulating member that regulates an amount of the developer on the developer bearing member;an acquiring portion that acquires an amount of information of the developer stored in the developing apparatus; anda control portion that performs a discharging operation for discharging the developer from the developing apparatus, apart from an image forming operation,wherein the developer bearing member bears a coating agent that is a powder other than the developer during an unused state, andin the discharging operation, a first amount of the developer is discharged when a first amount of information of the developer stored is acquired, anda second amount of the developer is discharged when a second amount of information of the developer stored indicates a larger developer amount than the developer amount indicated by the first amount of information,the first amount of the developer discharged being larger than the second amount of the developer discharged.15. The image forming apparatus according to claim 14 , further comprising a voltage applying portion that applies claim 14 , to the developer bearing ...

LOW POWER RADAR DETECTION SYSTEM

A communication device can be configured to detect radar signals within an operating channel. The communication device can include a mixer, filter, scanning and spreading circuit and a radar signal detector. The mixer can be configured to modulate a received communication signal based on an oscillating signal to generate a modulated signal. The filter can have a first bandwidth and be configured to filter the modulated signal. The scanning and spreading circuit can be configured to control the oscillating signal to scan an operating channel having a second bandwidth. The second bandwidth can be greater than the first bandwidth. The radar signal detector can be configured to detect a radar signal within the scanned operating channel. 1. A communication device , comprising:a mixer configured to modulate a radio frequency (RF) signal based on an oscillating signal to generate an output signal;a filter configured to filter the output signal;a scanning and spreading circuit configured to control the oscillating signal to scan an operating channel; anda radar signal detector configured to detect a radar signal based on the scanned operating channel.2. The communication device of claim 1 , wherein the filter is further configured to operate in a bandwidth that is smaller than an operating channel bandwidth of the operating channel.3. The communication device of claim 1 , wherein the scanning and spreading circuit is further configured to perform a spread-spectrum processing on the received communication signal to spread the received communication signal in a frequency domain.4. The communication device of claim 1 , wherein the scanning and spreading circuit is configured to adjust an oscillation frequency of the oscillating signal to scan the operating channel.5. The communication device of claim 1 , further comprising an oscillator configured to generate the oscillating signal claim 1 , wherein the oscillating signal has an oscillation frequency.6. The communication ...

Radar device and frequency interference cancellation method thereof

The present invention relates to a radar device and a frequency interference cancellation method thereof, and arranges a configuration comprising: an antenna unit for transmitting a radar transmission signal to a periphery and receiving a signal reflected from a target; an RF unit for generating the transmission signal, converting frequencies of a transmission signal and a reception signal, and amplifying a reception signal; a signal processing unit for generating a control signal to generate the transmission signal and cancelling frequency interference from a reception signal of the RF unit; and a control unit for generating radar detection information by using an output signal of the signal processing unit, and tracking information by accumulating the radar detection information. The present invention enables real time changing of a hopping pattern according to a radar frequency interference environment, thereby achieving operation of the hopping pattern adaptively optimized to the frequency interference environment.

ELECTROMAGNETIC IMAGING SYSTEM AND METHOD FOR OPERATING AN ELECTROMAGNETIC IMAGING SYSTEM

An electromagnetic imaging system for creating an image of an object is disclosed. The electromagnetic imaging system comprises at least one transmit antenna, multiple receive antennas, a control unit, a processing unit, and an interference detection unit. The at least one transmit antenna is configured to generate radiofrequency signals with at least one planned frequency at several planned times. The multiple receive antennas are configured to receive radiofrequency signals and to generate a corresponding measurement signal. The control unit is configured to control at least the multiple transmit antennas. The processing unit is configured to process the measurement signal into the image of the object. The interference detection unit is configured to detect and analyze an interference signal in the measurement signal, and the interference detection unit is connected to the control unit in a signal transmitting manner so as to control the control unit. Moreover, a method for operating an electromagnetic imaging system is disclosed. 1. An electromagnetic imaging system for creating an image of an object , comprising:at least one transmit antenna being configured to generate radio frequency signals with at least one planned frequency at several planned times;multiple receive antennas being configured to receive radio frequency signals and to generate a corresponding measurement signal;a control unit being configured to control at least the at least one transmit antenna,a processing unit being configured to process the measurement signal into the image of the object; andan interference detection unit being configured to detect and analyze an interference signal in the measurement signal, and the interference detection unit being connected to the control unit in a signal transmitting manner so as to control the control unit.2. The electromagnetic imaging system of claim 1 , wherein the control unit is configured to at least one of delay an imaging procedure claim 1 , ...

Doppler signal processing device and method thereof for interference spectrum tracking and suppression

Doppler signal processing device for detecting an object according to a received wireless signal. The Doppler signal processing device includes a frequency analysis unit for generating a frequency domain signal vector according to at least one digital signal, an interference suppression unit for performing a suppression operation according to the frequency domain signal vector and a frequency domain interference estimation signal vector to generate an interference suppressed frequency domain signal vector, an interference estimation unit for generating the frequency domain interference estimation signal vector according to the frequency domain signal vector, a detection unit for generating a result signal according to the interference suppressed frequency domain signal vector, an error detection unit for optionally providing an error detection control signal to the interference estimation unit to adjust a rate of updating the frequency domain interference estimation signal vector.

METHOD FOR REDUCING MUTUAL INTERFERENCE IN RADARS

A distributed FMCW radar communication system for interference mitigation in an ego unit comprising at least one RadCom unit arranged for radar sensing in a radar mode and for data communication in a communication mode with at least one target unit by switching between the radar mode and the communication mode in time and using separate frequency bands for the radar mode and the communication mode, using a random medium access technique for communication, where the ego unit comprises a plurality of RadCom units and a control unit adapted to control the plurality of RadCom units to use different starting times and frequency bands based on at least one received control message by means of communication during a radar frame duration (Tf) received by means of the data communication, where the starting times of different FMCW radars are separated sufficiently so as they are orthogonal. 1. A distributed FMCW radar communication system for interference mitigation in an ego unit comprising a RadCom unit arranged for radar sensing in a radar mode and for data communication in a communication mode with at least one target unit comprising a RadCom unit by switching between the radar mode and the communication mode in time and using separate frequency bands for the radar mode and the communication mode , using a random medium access technique for communication , where the communicated control message information is used for a co-allocated multiple FMCW radar sensor in both the ego unit and the at least one target unit to a portion of a radar frame duration (T) , where the starting times of different FMCW radar sensors are separated sufficiently so as they are orthogonal.2. A distributed FMCW radar communication system according to claim 1 , wherein the random medium access technique for communication is a CSMA with random backoff.3. A distributed FMCW radar communication system according to claim 1 , wherein the frequency band for the radar mode in the ego unit and the at least ...

POWER CONTROL FOR IMPROVED NEAR-FAR PERFORMANCE OF RADAR SYSTEMS

A radar system includes a transmitter, a receiver, and a processor. The transmitter transmits continuous wave radio signals. The receiver receives radio signals that includes the transmitted radio signal reflected from targets in an environment. The targets include a first target and a second target. The first target is closer than a first threshold distance from the vehicle, and the second target is farther than the first threshold distance from the vehicle. A processor is configured to process the received radio signals. The processor is configured to selectively process the received radio signals to detect the second target. The processor selectably adjusts operational parameters of at least one of the transmitter and the receiver to discriminate between the first target and the second target. 1. A radar sensing system for a vehicle , the radar sensing system comprising:a plurality of transmitters, each configured to transmit continuous wave radio signals;a plurality of receivers, configured to receive continuous wave radio signals, wherein the received radio signals include the transmitted radio signals reflected from targets in an environment;wherein the targets include a first target and a second target, wherein the first target is closer than a first threshold distance from the vehicle, and wherein the second target is farther than the first threshold distance from the vehicle;a processor configured to process the received radio signals from the receivers, wherein the processor is configured to selectively process the received radio signals to detect the second target; andwherein the processor is further operable to selectably adjust operational parameters of at least one of one or more of the transmitters and one or more of the receivers to discriminate between the first target and the second target.2. The radar sensing system of claim 1 , wherein the processor is operable to select a duty cycle percentage for the plurality of transmitters.3. The radar ...

SYSTEM, DEVICE AND METHODS FOR IMAGING OF OBJECTS USING ELECTROMAGNETIC ARRAY

The methods and device disclosed herein provide electromagnetic (EM) portable device for imaging an object embedded within a medium, the device comprising an array, the array comprises at least two transducers, wherein at least one of the at least two transducers is configured to transmit a signal towards the object, and at least one transceiver attached to said at least two transducers, the at least one transceiver is configured to transmit at least one signal toward the object and receive a plurality of signals affected by the object while the array is moved in proximity to the medium; a data acquisition unit configured to receive and stare the plurality of affected signals; and a processor unit configured to provide one or more hypothetical parameter values aver a parameter space of said at least one object and provide a target model per hypothesis of said parameter values, and compute a score value per hypothesis as a function of the target model and the affected signals. 1. A method for imaging at least one object embedded within a medium , the method comprising:obtaining by a (Radio Frequency) RF array a plurality of RF signals affected by said at least one object or said medium;providing one or more hypothetical parameter values over a parameter space of said at least one object;providing a target model per hypothesis of said hypothetical parameter values;computing a score value per hypothesis as a function of the target model and the plurality of affected RF signals;generating at least two or three images, representing reflections of said plurality of affected RF signals depending on combinations of different polarizations;combining the at least two or three images to provide an image of said at least one object; andcomputing the direction of said at least one object based on said at least two or three images.2. The method of comprising:computing a signaled value of an estimated reflection from each point in space in an area of said at least one object; ...

METHOD AND SYSTEM FOR REDUCING INTERFERENCE CAUSED BY PHASE NOISE IN A RADAR SYSTEM

A method is described in particular for reducing interference due to phase noise in a radar system, in which in a first noncoherent transceiver unit (NKSE) a first signal (sigTX) is generated and transmitted, in particular emitted, via a path (SP), in a further, in particular second noncoherent transceiver unit (NKSE), a first signal (sigTX) is generated and transmitted, in particular emitted, via the path (SP), the signals (sigTX and sigTX) are received directly or indirectly in the respective other transceiver unit and are processed further therein as received signals sigRX and sigRX, in the first transceiver unit (NKSE), a comparison signal (sigC) is formed from its first signal (sigTX) and from such a first signal (sigRTX) received from the further transceiver unit (NKSE) via the path (SP), and in the further transceiver unit (NKSE), a further comparison signal (sigC) is formed from its first signal (sigTX) and from such a first signal (sigTX) received from the first transceiver unit (NKSE) via the path (SP), wherein the further comparison signal (sigC) is transmitted, in particular communicated, from the further transceiver unit (NKSE) to the first transceiver unit (NKSE), wherein in a first step, deviations of the signals sigC and sigC which are induced by systematic deviations in the transceiver units (NKSE, NKSE), are compensated for, wherein in a second step, at least one complex value from a first of the two comparison signals or from a signal which was derived from this first comparison signal is used for the purpose of adapting at least one complex value of the second of the two comparison signals or a value of a signal which was derived from the second comparison signal, and thus to form a signal (sigCC), wherein the adaptation takes place such that by a mathematical operation, the vector sum or the difference of the complex values is formed or the sum or the difference of the phases of the complex values is formed. 1. A method for reducing interference ...

CROSS-TALK COMPENSATION FOR GRADIOMETER PROBES

A system/device, such as a gradiometer probe for detecting RF signals, or for example for explosive detection, has the shape of the coils in its adjustment mechanism that minimizes the cross-talk between the receiver probe (Rx) and the transmitting antenna (Tx) in such a way as to minimize (or reduce) the areas where the distance between the coils during the adjustment is the smallest. Moving coils along the plain of the coils is one mechanism of achieving it. Having the coils of different shapes, e.g., circular receiver and oval transmitter coils, is another. Many shapes are possible, including circular, oval, elliptical, and polygonal, to give a few examples. In some embodiments both of these methods/approaches are combined in a single device. 1. A device comprising:a transmitter antenna; anda receiver antenna that at least partially overlaps the transmitter antenna, configured to reduce cross talk;wherein at least one of the antennas is a differential antenna; andwherein the antennas are adjustable by movement of one of the antennas relative to the other of the antennas in a direction of adjustment that is parallel to or in a plane of one or both of the antennas.2. The device of claim 1 , wherein the antennas have different shapes.3. The device of claim 1 , wherein one of the antennas is circular.4. The device of claim 1 , wherein one of the antennas is oval.5. The device of claim 1 , wherein the antennas are non-axisymmetric.6. The device of claim 1 , wherein the device includes an adjuster that is capable of adjusting position of the antennas relative to one another.7. The device of claim 6 , wherein the adjustment mechanism provides structural stiffening.8. The device of claim 6 , wherein the adjuster includes an adjustment mechanism.9. The device of claim 1 , further comprising a cross-talk tuner operatively coupled to at least one of the antennas.10. The device of claim 1 , wherein the differential antenna is a multi-loop antenna.11. The device of claim 10 , ...

PULSED RADAR WITH MULTISPECTRAL MODULATION TO REDUCE INTERFERENCE, INCREASE PRF, AND IMPROVE DOPPLER VELOCITY MEASUREMENT

A pulse radar system and method has long range unambiguous image reflections at high pulse repetition frequency (PRF), long range high resolution radial velocity not limited by Doppler Nyquist limiting, improved signal sensitivity, and strong in-band interference rejection, thereby improving existing radar by increasing the transmission pulse rate by uniquely tagging each outgoing pulse so they can be easily separated when received. 1. A pulse radar system comprising:a pulse generator located at a first location and configured to create at least one pulse having a modulation signal and a carrier signal, said modulation signal being configured to be changed with each successive one of said at least one pulse such that said at least one pulse is separated from each other at a remote second location;a modulator in communication with said pulse generator and configured to emit said modulation signal; wherein said modulator is further configured to react to commands from said pulse generator to change said modulation signal; wherein, based on said commands received from said pulse generator, said modulator is further configured to dynamically change a modulation type of said modulation signal selected from a group of modulation types including an amplitude modulation, a frequency modulation, a digital pattern modulation, and a random pattern generation modulation; anda signal processor in communication with said at least one intermediate-frequency amplifier, and configured to process each said modulation signal from said at least one intermediate-frequency amplifier;wherein said each successive one of said at least one pulse repeats after a time interval;wherein said each successive one of said at least one pulse is configured to have a transmission pulse rate and further configured to be uniquely tagged;wherein said each successive one of said at least one pulse is distinguished such that said pulse radar system is configured to act efficiently as a pulse repetition ...

COUNTER UNMANNED AERIAL SYSTEM WITH NAVIGATION DATA TO INTERCEPT AND/OR DISABLE AN UNMANNED AERIAL VEHICLE THREAT

A system for providing integrated detection and countermeasures against unmanned aerial vehicles include a detecting element, a location determining element and an interdiction element. The detecting element detects an unmanned aerial vehicle in flight in the region of, or approaching, a property, place, event or very important person. The location determining element determines the exact location of the unmanned aerial vehicle. The interdiction element can either direct the unmanned aerial vehicle away from the property, place, event or very important person in a non-destructive manner, or can cause disable the unmanned aerial vehicle in a destructive manner. 1a first sensor comprising a radio receiver configured to detect radio frequency (RF) signature data based on a radio signal communicated from an unmanned aerial system target;a second sensor configured to locate the unmanned aerial system target; and in response to data from the first and second sensors, identify the unmanned aerial system target and determine whether the unmanned aerial system target is an unmanned aerial vehicle (UAV) threat, and', 'conditioned on the determination, provide instructions to a counter unmanned aerial system with navigation data to intercept and/or disable the unmanned aerial vehicle threat., 'a computer processor programmed to perform operations comprising. A system, comprising: This application is a continuation of U.S. patent application Ser. No. 17/001,254 filed Aug. 24, 2020, now U.S. Pat. No. ______, which is a continuation of U.S. patent application Ser. No. 16/362,285, filed Mar. 22, 2019; now U.S. Pat. No. 10,795,010, which is a continuation of U.S. patent application Ser. No. 15/967,291, filed Apr. 30, 2018, now U.S. Pat. No. 10,281,570; which is a continuation of U.S. patent application Ser. No. 15/598,112, filed May 17, 2017, now U.S. Pat. No. 9,977,117; which is a continuation of U.S. patent application Ser. No. 14/821,907, filed Aug. 10, 2015, now U.S. Pat. No. 9 ...

RADAR ANTENNA FOR VEHICLE BUMPER FASCIA

For example, a system may include a radome to be attached to a vehicle bumper fascia; an antenna array on a Printed Circuit Board (PCB), the antenna array is between the PCB and the radome, the antenna array comprising a Transmit (Tx) antenna configured to transmit Tx radar signals via the radome and the vehicle bumper fascia, and a receive (Rx) antenna configured to receive Rx radar signals based on the Tx radar signals; and an absorbing spacer in a spacer area between the PCB and the radome, the spacer area separating the Tx antenna from the Rx antenna, the absorbing spacer configured to absorb reflected signals formed by reflection of the Tx radar signals from the vehicle bumper fascia. 1. A radar apparatus comprising:a radome;an antenna array on a Printed Circuit Board (PCB), the antenna array is between the PCB and the radome, the antenna array comprising a Transmit (Tx) antenna configured to transmit Tx radar signals via the radome and a vehicle bumper-fascia, and a receive (Rx) antenna configured to receive Rx radar signals based on the Tx radar signals; andan absorbing spacer in a spacer area between the PCB and the radome, the spacer area separating the Tx antenna from the Rx antenna, the absorbing spacer configured to absorb reflected signals formed by reflection of the Tx radar signals from the vehicle bumper fascia.2. The radar apparatus of claim 1 , wherein at least part of a surface of the radome is directly in touch with a surface of the vehicle bumper fascia.3. The radar apparatus of claim 1 , wherein a distance between the surface of the radome and the surface of the vehicle bumper fascia is less than 50 millimeter.4. The radar apparatus of claim 1 , wherein a distance between the surface of the radome and the surface of the vehicle bumper fascia is less than 5 millimeter.5. The radar apparatus of claim 1 , wherein a distance between the surface of the radome and the surface of the vehicle bumper fascia is less than 1 millimeter.6. The radar ...

Radio frequency transmitting/receiving element and method for producing a radio frequency transmitting/receiving element

A method for producing a radio frequency transmitting/receiving element comprising at least one radio frequency antenna and at least one radio frequency chip, and to a corresponding radio frequency transmitting/receiving element made by the method. The method comprises the following steps: providing a temporary rigid carrier; applying a conductor pattern structure comprising the antenna structure of the at least one radio frequency antenna and connection contacts—connected thereto via leads—for the at least one radio frequency chip; arranging the at least one radio frequency chip on the connection contacts of the conductor pattern structure; applying an electrically insulating layer on the conductor pattern structure, such that the at least one radio frequency chip is surrounded by the electrically insulating layer; and removing the temporary rigid carrier. 1. A method for producing a radio frequency transmitting/receiving element comprising at least one radio frequency antenna and at least one radio frequency chip , comprising the following steps:a. providing a temporary rigid carrier;b. applying a conductor pattern structure comprising the antenna structure of the at least one radio frequency antenna and connection contacts—connected thereto via leads—for the at least one radio frequency chip;c. arranging the at least one radio frequency chip on the connection contacts of the conductor pattern structure;d. applying an electrically insulating layer on the conductor pattern structure, such that the at least one radio frequency chip is surrounded by the electrically insulating layer; ande. removing the temporary rigid carrier.2. The method according to claim 1 , wherein applying the electrically insulating layer on the conductor pattern structure is carried out in such a way that the at least one radio frequency chip is completely surrounded by the electrically insulating layer.3. The method according to claim 1 , wherein after applying an electrically insulating ...

High frequency device

An area and a size of a high frequency device are reduced. The high frequency device includes a first board (1) that has a first surface (1a) on which a circuit unit is formed and a second surface (1b) on which a ground conductor is formed, a second board (2) that has a third surface (2a) on which an antenna is formed and a fourth surface (2b) on which a second ground conductor is formed, and a conductor plate (3), in which the conductor plate (3) is sandwiched between the second surface (1b) and the fourth surface (2b).

RADAR SENSOR

A radar sensor includes: an oscillator for generating a transmission signal; a mixer for generating an intermediate-frequency signal by mixing a part of the transmission signal with a received signal; and an offset-compensation unit for generating an oscillating compensation signal, which is sent to the mixer in addition to the aforementioned part of the transmission signal. 111-. (canceled)12. A radar sensor , comprising:an oscillator generating a transmission signal;a mixer generating an intermediate-frequency signal by mixing a selected part of the transmission signal with a received signal; andan offset-compensation unit generating an oscillating compensation signal which is sent to the mixer along with the selected part of the transmission signal.13. The radar sensor as recited in claim 12 , wherein the oscillating compensation signal is sent to the mixer by being fed into a reception path upstream from the mixer.14. The radar sensor as recited in claim 13 , further comprising:a control unit adjusting at least one of an amplitude, a power and a phase angle of the oscillating compensation signal.15. The radar sensor as recited in claim 14 , further comprising:a sensor measuring a direct voltage component of the intermediate-frequency signal.16. The radar sensor as recited in claim 15 , wherein the control unit adjusts the at least one of the amplitude claim 15 , the power claim 15 , and the phase angle of the oscillating compensation signal based on the measured direct voltage component of the intermediate-frequency signal.17. The radar sensor as recited in claim 16 , wherein:a monolithic integrated microwave circuit includes the oscillator, the mixer, the at least one sensor measuring a direct voltage component of the intermediate-frequency signal, the offset-compensation unit, and the control unit; andthe control unit triggers the offset-compensation unit as a function of the direct voltage component of the intermediate-frequency signal measured by the sensor, ...

System and Method for Determining Interference in a Radar System

In accordance with an embodiment, a method of operating a radar system includes activating a transmitter to transmit a radar signal during a first time period, receiving a reflection of the radar signal from a radar antenna, downconverting the reflected radar signal, and digitally processing the downconverted reflected radar signal within a first frequency bandwidth using a first signal path. The method also includes deactivating the transmitter during a second time period, receiving a second signal from the radar antenna during the second time period, downconverting the second signal, measuring a power of the downconverted second signal within a second frequency bandwidth using a second signal path different from the first signal path, and determining an interference metric based on measuring the power. 1. A system comprising:a radar transceiver comprising:a transmitter,a downconverter,a first signal path having a first frequency bandwidth coupled to an output of the downconverter, anda second signal path different from the first signal path, the second signal path comprising:an analog filter having an input coupled to the output of the downconverter, andan analog power detector coupled to an output of the analog filter; andat least one processor, the at least one processor configured to:activate the transmitter of the radar transceiver for transmitting a radar signal during a first time period,deactivate the transmitter during a second time period different from the first time period, anddetermine an interference metric based on an output of the analog power detector provided during the second time period.2. The system of claim 1 , wherein the analog filter has a second frequency bandwidth greater than the first frequency bandwidth.3. The system of claim 1 , wherein the first signal path is configured to digitally process the output of the downconverter within the first frequency bandwidth.4. The system of claim 1 , wherein the at least one processor is further ...

Sensor module

A sensor module includes a sensor module main body having a rectangular board provided with a radio radar sensor function, and a metallic case having a rectangular parallelepiped box shape in which an opening part opened at one face in a thickness direction is formed and a cut-out opening for drawing out a cable connecting the sensor module main body is formed on a side face, the opening part being closed by the board inserted through the opening part with a component disposed on a front face of the board facing toward a bottom part on the inner side, and the cable is inserted into at least a part of the cut-out opening, and the cut-out opening is formed to be symmetrical with respect to a plane passing through the center of the metallic case and perpendicular to a plane of the cut-out opening.

Radar Interference Mitigation

Various implementations described herein are directed to a method for mitigating radar interference. The method may include receiving time domain signals from a radar device and transforming the time domain signals to time-frequency domain signals. The method may include comparing each time-frequency domain signal with one or more surrounding time-frequency domain signals to determine which of the time-frequency domain signals have interference. The method may include repairing the time-frequency domain signals having interference. 1. A method , comprising:receiving time domain signals from a radar device;transforming the time domain signals to time-frequency domain signals;comparing each time-frequency domain signal with one or more surrounding time-frequency domain signals to determine which of the time-frequency domain signals have interference; andrepairing the time-frequency domain signals having interference.2. The method of claim 1 , wherein the radar device comprises a frequency-modulated continuous-wave (FMCW) radar.3. The method of claim 1 , wherein the radar device comprises a pulse compression radar.4. The method of claim 1 , wherein the time domain signals comprise radar related waveforms in time domain claim 1 , and wherein the time-frequency domain signals comprise radar related waveforms in time-frequency domain.5. The method of claim 1 , wherein transforming the time domain signals to time-frequency domain signals involves using a short-time Fourier transform to generate the time-frequency domain signals from the time domain signals.6. The method of claim 1 , further comprising storing the time-frequency domain signals for multiple sweeps of the radar device claim 1 , wherein each sweep comprises a rotation interval of the radar device over a period of time claim 1 , and wherein the multiple sweeps comprise an upper boundary of sweeps of less than or equal to a dwell count of the radar device.7. The method of claim 1 , wherein determining which of ...

Terrestrial imaging using multi-polarization synthetic aperture radar

An embodiment of a method for processing synthetic aperture radar (SAR) image data includes acquiring a multi-polarization SAR image of a terrestrial region, pre-processing the SAR image to remove or reduce radiometric and geometric errors, and separating the SAR image into a plurality of channels, each channel representing an image associated with a different polarization mode. The method also includes calculating a characteristic of the region for each polarization channel, acquiring ground data and estimating the characteristic of the region based on the ground data, estimating a correlation of the calculated characteristic for each polarization channel with the estimated characteristic based on the ground data, selecting one or more polarization channels having a correlation exceeding a selected value, and generating a SAR image including only the selected polarization channels based on the comparison.

RADAR SENSOR INCLUDING WAVEGUIDE STRUCTURE

A radar sensor. The radar sensor includes a high-frequency component situated on a circuit board and a waveguide structure, which is connected via a coupling structure to the high-frequency component. The waveguide structure is formed in a mold, which is injection molded to a part of the circuit board supporting the high-frequency component. 1. A radar sensor , comprising:a high-frequency component situated on a circuit board; anda waveguide structure which is connected via a coupling structure to the high-frequency component;wherein the waveguide structure is formed in a mold which is injection molded to a part of the circuit board supporting the high-frequency component.2. The radar sensor as recited in claim 1 , wherein the high-frequency component is extrusion coated using material of the mold.3. The radar sensor as recited in claim 2 , wherein the circuit board is extrusion coated as a whole with the mold claim 2 , with the exception of plug connections.4. The radar sensor as recited in claim 1 , wherein the waveguide structure forms at least one waveguide antenna.5. The radar sensor as recited in claim 1 , wherein the waveguide structure forms a distributor structure for connecting the high-frequency component to radar antennas.6. The radar sensor as recited in claim 1 , wherein the high-frequency component is extrusion coated using a material which forms a packaging of the high-frequency component claim 1 , and the packaging is extrusion coated using material of the mold.7. The radar sensor as recited in claim 1 , wherein the mold is made of electrically conductive material.8. The radar sensor as recited in claim 1 , wherein the waveguide structure includes cavities claim 1 , which are open toward an outer surface of the mold and whose inner walls include a metallization claim 1 , and the cavities are closed by a cover covering the outer surface claim 1 , the cover including a metal layer at least on a side facing toward the mold.9. The radar sensor as ...

SCALABLE POLARIMETRIC PHASED ARRAY TRANSCEIVER

Polarimetric transceiver front-ends and polarimetric phased array transceivers include two receive paths configured to receive signals from an antenna, each including a respective variable phase shifter. A first transmit path is connected to the variable phase shifter of one of the two receive paths and is configured to send signals to the antenna. A transmit/receive switch is configured to select between the first transmit path and the two receive paths for signals. The transmit/receive switch has an element that adds a high impedance to the transmit path when the transmit/receive switch is in a receiving state. 1. A polarimetric transceiver front-end comprising:two receive paths configured to receive signals from an antenna, each including a respective variable phase shifter;a first transmit path that is connected to the variable phase shifter of one of the two receive paths, configured to send signals to the antenna; anda transmit/receive switch configured to select between the first transmit path and the two receive paths for signals, the transmit/receive switch comprising an element that adds a high impedance to the transmit path when the transmit/receive switch is in a receiving state.2. The polarimetric transceiver front-end of claim 1 , further comprising a transmission polarization switch configured to select a polarization for transmission.3. The polarimetric transceiver front-end of claim 2 , wherein the transmission polarization switch connects to the transmit/receive switch.4. The polarimetric transceiver front-end of claim 1 , wherein each receive path corresponds to a respective polarization and further comprises a variable amplifier.5. The polarimetric transceiver front-end of claim 4 , wherein the transmit path comprises a transmit variable amplifier.6. The polarimetric transceiver front-end of claim 5 , further comprising a digital control configured to provide settings to the variable phase shifters claim 5 , the variable amplifiers claim 5 , and ...

NOISE MITIGATION IN RADAR SYSTEMS

A noise-mitigated continuous-wave frequency-modulated radar includes, for example, a transmitter for generating a radar signal, a receiver for receiving a reflected radar signal and comprising a mixer for generating a baseband signal in response to the received radar signal and in response to a local oscillator (LO) signal, and a signal shifter coupled to at least one of the transmitter, LO input of the mixer in the receiver and the baseband signal generated by the mixer. The impact of amplitude noise or phase noise associated with interferers, namely, for example, strong reflections from nearby objects, and electromagnetic coupling from transmit antenna to receive antenna, on the detection of other surrounding objects is reduced by configuring the signal shifter in response to an interferer frequency and phase offset. 1. The circuit of claim 2 , further comprising an estimator operable to process the received radar signal and estimate a frequency and phase of interferer signal; andwherein the signal shifter is operable to signal shift the interferer signal included in the reflected radar signal in response to the estimation of the frequency and phase of interferer signal.2. A circuit claim 2 , comprising:a transmitter to transmit a radar signal;a receiver to receive a reflected radar signal, wherein the reflected radar signal includes an interferer signal, wherein the interferer signal includes at least one of an associated amplitude noise skirt or phase noise skirt, and wherein the receiver comprises a mixer to generate a baseband signal in response to the received radar signal, wherein the baseband signal includes a real portion and imaginary portion;a signal shifter in one of the transmitter and the receiver and coupled to the mixer, wherein the signal shifter is operable to signal shift the interferer signal included in the reflected radar signal and signal shift the baseband signal received from the mixer, wherein the signal shift includes one of frequency ...

NARROWBAND ANTIJAM SIGNALING SYSTEM (NASS) AND DEVICE

A narrowband AJ signaling system includes an AJ processor placed between a high precision analog-to-digital (ADC) converter and a narrowband digital receiver. In another example, the AJ processor is placed between the high precision ADC and a digital-to-analog converter (DAC). The AJ processor of either example may suppress the jammer power down to the level of the noise floor of the system. 1. A narrowband anti jam signaling system , comprising:an antijam (AJ) signal processing unit configured to suppress a jammer power down to a predetermined level of the narrowband AJ signaling system; anda narrowband signal receiver configured to process a narrowband signal, whereinan input to the AJ signal processing unit is configured to receive samples from a high-precision analog-to-digital converter (ADC),the AJ signal processing unit is configured to process the samples to reduce contribution due to jamming, andthe narrowband signal receiver is configured to receive the processed samples with reduced contribution from jamming.2. The system of claim 1 , wherein the predetermined level is determined by a thermal noise floor of the narrowband digital receiver.3. The system of claim 1 , wherein the antijam signal processing unit comprises a wide dynamic range radio frequency (RF) front end and automatic gain control (AGC) module configured to amplify incoming RF signals and filter an unwanted RF signals prior to digitization.4. The system of claim 1 , wherein the AJ signal processing unit comprises at least one channel configured to provide high precision digitization of a narrowband signal followed by a narrowband signal receiver, and', 'at least one channel configured to provide low precision analog to digital conversion followed by a wideband signal receiver., 'a plurality of ADC channels comprising of'}5. The system of claim 1 , wherein the antijam signal processing unit comprises a digital-to-analog converter (DAC) configured to convert one or more digitally processor ...

INTERFERENCE DETECTION IN A FREQUENCY MODULATED CONTINUOUS WAVE (FMCW) RADAR SYSTEM

A frequency modulated continuous wave (FMCW) radar system is provided that includes a receiver configured to generate a digital intermediate frequency (IF) signal, and an interference monitoring component coupled to the receiver to receive the digital IF signal, in which the interference monitoring component is configured to monitor at least one sub-band in the digital IF signal for interference, in which the at least one sub-band does not include a radar signal. 1. A frequency modulated continuous wave (FMCW) radar system comprising:a receiver configured to generate a digital intermediate frequency (IF) signal; andan interference monitoring component coupled to the receiver to receive the digital IF signal, in which the interference monitoring component is configured to monitor at least one sub-band in the digital IF signal for interference, in which the at least one sub-band does not include a radar signal.2. The FMCW radar system of claim 1 , in which the interference monitoring component is configured to compute received signal strength indicator (RSSI) values as a function of time for each sub-band of the at least one sub-band to determine whether or not interference is present the sub-band.3. The FMCW radar system of claim 2 , in which the interference monitoring component is configured to quantize each RSSI value based on at least one interference threshold to generate at least one interference impact indicator.4. The FMCW radar system of claim 2 , in which the at least one sub-band includes one or both of a sub-band in an image band of the digital IF signal and a sub-band in an upper Nyquist band of the digital IF signal.5. The FMCW radar system of claim 2 , in which RSSI values are generated for each chirp of a frame of chirps while a transmitter in the FMCW radar system is on.6. The FMCW radar system of claim 1 , in which the digital IF signal is generated while a transmitter in the FMCW radar system is off.7. The FMCW radar system of claim 2 , in which ...

PHASE NOISE SIMULATION MODEL FOR PULSE DOPPLER RADAR TARGET DETECTION

Method for generating a model of the effect of phase noise during use of a Doppler radar system including calculating, using a processor, an initial signal-to-clutter ratio (SCR) representing a ratio of power received from echoes from a target by the radar system to power resulting from clutter reflection received by the radar system. The initially calculated SCR is modified as a function of a range ambiguity and range resolution. A Doppler frequency of interest is calculated based on velocity of a target, target heading and radar frequency, along with a Doppler filter bandwidth, frequency components and a measure of clutter signal passing through the Doppler filter of interest by summing products of the phase noise for each frequency by the Doppler filter bandwidth. This measure indicates effectiveness of target detection by the Doppler radar system as a function of distance. 1. A method for generating a model of the effect of phase noise during use of a Doppler radar system , comprising:calculating, using a processor, an initial signal-to-clutter ratio (SCR) representing a ratio of power received from echoes from a target by the radar system to power resulting from clutter reflection received by the radar system;modifying, using a processing unit, the initially calculated SCR as a function of a range ambiguity and range resolution;calculating, using the processing unit, a Doppler frequency of interest based on velocity of a target, target heading and radar frequency;calculating, using the processing unit , a Doppler filter bandwidth;calculating, using the processing unit , frequency components; andcalculating, using the processing unit , a measure of clutter signal passing through the Doppler filter of interest by summing products of the phase noise for each frequency by the Doppler filter bandwidth,whereby this measure indicates effectiveness of target detection by the Doppler radar system as a function of distance.2. The method of claim 1 , further comprising ...

Smart Device-Based Radar System Detecting Human Vital Signs Using a Compact Circularly-Polarized Antenna

Techniques and apparatuses are described that implement a smart device-based radar system capable of detecting human vital signs using a compact circularly-polarized antenna. A radar system includes at least one compact circularly-polarized antenna with a patch antenna and a quadrature hybrid coupler. The quadrature hybrid coupler is on a separate plane that is above or below the patch antenna. By vertically stacking the patch antenna with the quadrature hybrid coupler, lateral dimensions of the radar system can be reduced relative to other antenna configurations or designs. The quadrature hybrid coupler can also have a ring-shape design to improve isolation and polarization purity of the compact circularly-polarized antenna relative to a rectangular design. The compact circularly-polarized antenna enables a radar system operating at frequencies between approximately 1 gigahertz (GHz) and 24 GHz to be implemented within a variety of small smart devices. 1. A smart device comprising:a radar system, the radar system including:at least one compact circularly-polarized antenna, having dimensions that fit inside an exterior housing of the smart device, the at least one compact circularly-polarized antenna including:a patch antenna positioned on a first plane and having a first feed pin and a second feed pin; anda quadrature hybrid coupler positioned on a second plane, at least a portion of the quadrature hybrid coupler on the second plane overlapping a portion of the patch antenna on the first plane along an axis that is perpendicular to the first and second planes, the quadrature hybrid coupler including a first port, a second port coupled to the first feed pin of the patch antenna, a third port coupled to the second feed pin of the patch antenna, and a fourth port;a transmitter coupled to the first port of the quadrature hybrid coupler and configured to transmit, via the at least one compact circularly polarized antenna, a radar transmit signal with a first circular ...

Cover member having plurality of faces, and radar apparatus provided with the cover member

A radar apparatus includes transmitting means, receiving means, target detection means, and a cover member. The cover member is positioned opposite at least one of the transmitting means and the receiving means, such as to cover at least one of the transmitting means and the receiving means. The cover member is provided with a first face which is positioned opposite at least one of the transmitting means and the receiving means, and a second face which is on an opposite side from the first face and is not parallel to the first face.

Automotive radar system and automotive radar sensor module with breather structure

A housing for a radar sensor module has a back surface and a plurality of side surfaces connected to the back surface. A vent structure is connected to the back surface and at least one of the side surfaces. The vent structure includes an enclosure enclosing a chamber. A first opening in the vent structure penetrates the at least one of the side surfaces of the housing, such that the chamber is exposed to an exterior of the housing. A second opening in the vent structure penetrates the enclosure such that the chamber is exposed to an interior of the housing.

Angle of Arrival (AoA) Antenna Assembly for Passive Entry Passive Start (PEPS) Base Station

A base station of a vehicle includes an angle of arrival (AoA) antenna assembly and a controller. The AoA antenna assembly is positioned at a known location of the vehicle. The AoA antenna assembly includes a pair of antennas on a printed circuit board to detect an angle of arrival of a wireless signal as received by the AoA antenna assembly from a portable remote control. The wireless signal may be a Bluetooth™, a Bluetooth™ low energy (BLE), a Wi-Fi™, or an ultra-wideband (UWB) wireless signal. The remote control may be in the form of a phone or a key fob. The controller uses the detected angle and the known location of the AoA antenna assembly to locate the portable remote control relative to the vehicle. The controller may perform a passive entry passive start (PEPS) operation of the vehicle as a function of the location of the remote control.

AN ANTENNA SYSTEM FOR POLARIZATION DIVERSITY

An antenna system () comprising a single antenna element having first () and second () antenna ports arranged to pass a respective first and second antenna signal. The first and second antenna signals being derived from a first common antenna signal (J) and arranged to be essentially equal in envelope. An antenna pattern of the system being arranged to be selectable between a first antenna pattern having a first polarization and a second antenna pattern having a second polarization substantially orthogonal to the first polarization. The first antenna pattern being selected by setting the first and second antenna signal to have the same polarity on first () and second () antenna ports, the second antenna pattern being selected by setting the first and second antenna signal to have substantially opposite polarities on first () and second () antenna ports. 119-. (canceled)20100110111112110111112111112. An antenna system () comprising an antenna structure () consisting of a single antenna element having first () and second () antenna ports arranged to pass a respective first and second antenna signal , the first and second antenna signals arranged to be derived from a first common antenna signal (J) and arranged to be essentially equal in envelope , the antenna structure () being arranged to have an antenna pattern which is selectable between a first antenna pattern having a first polarization and a second antenna pattern having a second polarization substantially orthogonal to the first polarization , the first antenna pattern being selected by setting the first and second antenna signal to have the same polarity on first () and second () antenna ports , the second antenna pattern being selected by setting the first and second antenna signal to have substantially opposite polarities on first () and second () antenna ports.21100110111112110110111112120110111112. The antenna system () according to arranged in either of a receiver mode claim 20 , a transmitter mode claim ...

DETECTING FEDERAL INCUMBENT RADAR (FIR) SIGNAL

A method for detecting the presence of a signal in a frequency spectrum is provided. The method includes receiving the frequency spectrum. The power spectral density of the received frequency spectrum is estimated. A plurality of frequency bins are segmented for the frequency spectrum based on the estimated power spectral density. For segments with an estimated power spectral density above a first threshold, a radar spectral signature matching algorithm is applied to detect the presence of the signal and for segments with a power estimate below the first threshold and above a second threshold, additional techniques are applied to detect the presence of the signal. 1. A method for detecting the presence of a signal in a frequency spectrum , the method comprising:receiving the frequency spectrum;estimating the power spectral density of the received frequency spectrum;segmenting a plurality of frequency bins for the frequency spectrum based on the estimated power spectral density;for segments with an estimated power spectral density above a first threshold, applying a radar spectral signal matching algorithm to detect the presence of the signal; andfor segments with a power estimate below the first threshold and above a second threshold, applying additional techniques to detect the presence of the signal.2. The method of claim 1 , wherein applying additional techniques comprises:applying a cyclostationarity detection algorithm; andapplying a wavelet transform.3. The method of claim 1 , wherein applying additional techniques comprises:performing wavelet decomposition and identifying nodes where wavelet decomposition coefficients match a radar pulse repetition pattern.4. The method of claim 3 , wherein a radar passband signal frequency is calculated from the identified wavelet nodes claim 3 , where the wavelet decomposition coefficients match the radar pulse repetition rate claim 3 , and an applied translation frequency.5. The method of claim 1 , and further comprising ...

System and method for emitter detection

A signal receiver includes receive circuitry. The signal receiver further includes a processor coupled to the receive circuitry and configured to receive, from a filter, a stream of samples including a first set of samples. A data rate of an input of the filter may correspond to a data rate of an output of the filter. The first set of samples includes multiple samples. The processor is further configured to perform a detection operation on the first set of samples. The processor is further configured to detect a signal emitter based on the detection operation.

RADIO-WAVE-PENETRABLE LAYER HAVING METALLIC LUSTER

Disclosed is a coating layer penetrable by radio wave and having a metallic luster. The coating layer includes a resin layer as an outmost layer to an exterior or front, a metallic texture layer formed on a rear side of the resin layer and comprising a optical film layer including metal oxides having different refractive indexes, and a germanium (Ge) layer to reflect light and a reflection layer formed on the rear side of the metallic texture layer. 114-. (canceled)15. A method of producing a coating layer , comprising:washing and activating a surface of a resin layer using a plasma converted from argon gas;radiating an electron beam using a first refractive material and a second refractive material to form a multilayered optical film layer on the surface of the resin layer,radiating an electron beam using germanium to form a germanium layer.16. The method of claim 15 , wherein the first refractive material comprises TiOand/or CrO.17. The method of claim 15 , wherein the second refractive material comprises SiO.18. The method of claim 15 , wherein the germanium layer is formed on a front side of the multilayered optical film layer claim 15 , on a rear side of the multilayered optical film layer claim 15 , or between the first refractive material and the second refractive material. The present application claims priority to Korean Patent Application No. 10-2015-0175332, filed Dec. 9, 2015 and No. 10-2016-0115705, filed Sep. 8, 2016, the entire content of which is incorporated herein for all purposes by this reference.The present invention relates to a coating layer, or particularly a radio-wave-penetrable coating layer having a metallic luster, such that the coating layer of the present invention may protect SCC radar while radio waves may penetrate the coating layer.A smart cruise control (SCC) system detects movement of a preceding vehicle using a radar mounted on a front portion of a vehicle, thereby controlling engine and brakes to maintain a distance from the ...

RADAR SYSTEM SUPPRESSING INTERFERENCE BETWEEN A PLURALITY OF RADAR UNITS

A radar system is provided with a plurality of radar units. Each radar unit includes a first processing unit for calculating a distance and a relative speed to an object in the vicinity of each radar unit in accordance with a beat signal, a frequency band of the first modulated waves being a first frequency band, and a modulation period of the first modulated waves being a first modulation period; a second processing unit for calculating a distance to the object in accordance with a beat signal, a frequency band of the second modulated waves being a second frequency band, and a modulation period of the second modulated waves being a second modulation period; and a calculation result determination unit for determining the distance and the relative speed to the object in accordance with calculation results of the first and second processing units. 1. A radar system provided with a plurality of radar units , each of the plurality of radar units comprising:a first processing unit configured to calculate a distance and a relative speed to an object in the vicinity of each radar unit in accordance with a beat signal acquired by transmitting and receiving first modulated waves, a frequency band of the first modulated waves being a first frequency band, and a modulation period of the first modulated waves being a first modulation period;a second processing unit configured to calculate a distance to the object in accordance with a beat signal acquired by transmitting and receiving second modulated waves, a frequency band of the second modulated waves being a second frequency band, and a modulation period of the second modulated waves being a second modulation period; anda calculation result determination unit configured to determine the distance and the relative speed to the object in accordance with a calculation result of the first processing unit and a calculation result of the second calculation result,whereinthe radar system comprises:a frequency control unit configured ...

Radar sensor

The invention relates to a radar sensor including a radar antenna, a radar lens and a funnel element between the radar antenna and the radar lens. The funnel element includes a material which absorbs the radar radiation emitted by the radar antenna.

IMAGE COMMUNICATION SYSTEM, IMAGE RECEPTION APPARATUS, IMAGE TRANSMISSION APPARATUS, IMAGE RECEPTION METHOD, IMAGE TRANSMISSION METHOD, AND RECORDING MEDIUM

An image communication system includes an image transmission apparatus and an image reception apparatus. The image transmission apparatus includes a transmission-side wireless communication unit. The image reception apparatus includes a reception-side wireless communication unit. At least one of the image transmission apparatus and the image reception apparatus includes a radar detection unit configured to execute a detection process on radio waves of radar in a communication channel that has a possibility of being used for image data communication by the transmission-side wireless communication unit and the reception-side wireless communication unit. At least one of the image transmission apparatus and the image reception apparatus includes a channel use continuation unit configured to execute channel use confirmation for confirming that the communication channel is usable by continuously monitoring the detection process by the radar detection unit for a predetermined time. 1. An image communication system , comprising:an image transmission apparatus; andan image reception apparatus,wherein the image transmission apparatus includes a transmission-side wireless communication unit configured to transmit image data by radio waves and capable of simultaneously using up to two communication channels, the image data being generated in synchronization with an imaging clock and transmitted in the order in which the image data is generated,wherein the image reception apparatus includes a reception-side wireless communication unit configured to receive the image data transmitted by the transmission-side wireless communication unit by radio waves,wherein at least one of the image transmission apparatus and the image reception apparatus includes a radar detection unit configured to execute a detection process on radio waves of radar in a communication channel that has a possibility of being used tier image data communication by the transmission-side wireless communication unit ...

IN-SERVICE MONITORING OF DFS SIGNALS DURING ANALOG VIDEO TRANSMISSION

An in-service radar detection unit for a wireless analog video receiver includes a channel estimator, a signal recovery vector creator, a signal estimator, a radar detector, and a control transmitter. The channel estimator generates a channel estimation between a transmitter and a receiver from a plurality of signals received on a plurality of antennas. The signal recovery vector creator creates a non-zero nulling vector from the channel estimation. The signal estimator utilizes the nulling vector to restore an additional signal, other than an analog video, from the received signals. The radar detector detects a radar signal in the additional signal, and the control transmitter transmits an indication of the detected radar signal using at least one of the antennas. 1. An in-service radar detection unit for a wireless analog video receiver , the unit comprising:a channel estimator to generate a channel estimation between a transmitter and said receiver from a plurality of signals received on a plurality of antennas;a signal recovery vector creator to create a non-zero nulling vector from said channel estimation;an other signal estimator to utilize said nulling vector to restore an additional signal other than an analog video from said received signals;a radar detector to detect a radar signal in said additional signal; anda control transmitter to transmit an indication of said detected radar signal using at least one of said antennas.2. A unit according to wherein said signal recovery vector creator to create an equalization vector and also comprising:a video signal estimator to restore said analog video from said received signals using said equalization vector.3. A unit according to and also comprising an analog video handler to display said restored video from said video signal estimator on a display.4. A unit according to wherein one of said plurality of antennas is used only by said control transmitter.5. A unit according to wherein said unit is located in a ...

METHODS AND SYSTEMS FOR ENVIRONMENTAL SENSING CAPABILITY PLANNING IN A SHARED SPECTRA

Techniques for planning locations of receiver systems for an environmental sensing capabilities (ESC) system are provided. An ESC system is used to detect activity of primary users in shared spectra. The techniques can be used to reduce dead zone area(s), created by the receiver systems, for radios of secondary systems using the shared frequency spectrum. 1. A method , comprising:receiving parameter data of a receiver system and configuration data, where the configuration data comprises data, other than receiver system parameter data, configured to be used to model deployment of receiver system;determining prospective locations of radios controlled by a shared access system and in a region of impact;determining at least one radio transmit power level;determining a dead zone ratio; andbased upon at least one of a protection region coverage ratio (PRCR) and the dead zone ratio, recommending whether or not to change at least one parameter of the receiver system.2. The method of claim 1 , wherein claim 1 , based upon the at least one of the PRCR and the dead zone ratio claim 1 , recommending whether or not to change the at least one parameter of the receiver system comprises:determining if the dead zone ratio is less than a dead zone threshold level;upon determining that the dead zone ratio is less than the dead zone threshold level, then determining the PRCR;{'b': '1', 'determining if the PRCR is greater than a first protection region coverage ratio level (PRCRL);'}{'b': '1', 'upon determining that the PRCR is greater than the PRCRL, then recommending no changes to the receiver system parameters;'}{'b': 1', '2', '2', '1, 'upon determining that the PRCR is not greater than the PRCRL, then determining if the PRCR is greater than a second protection region coverage ratio level (PRCRL), where the PRCRL is less than the PRCRL;'}{'b': '2', 'upon determining that the PRCR is greater than the PRCRL, then recommending increasing receiver system front end gain;'}{'b': '2', 'upon ...

POLARIMETRIC RADAR FOR OBJECT CLASSIFICATION AND SUITABLE METHOD AND SUITABLE USE THEREFOR

The present invention relates to a polarimetric radar, consisting of a transmission assembly that emits circularly polarized waves by means of transmission antennas and a receiver assembly that receives the reflected circularly polarized wave components by means of an antenna assembly. A plurality of two-channel receivers are provided as the receiver assembly, which simultaneously receive clockwise-rotating and anti-clockwise-rotating circularly polarized signal components, which are provided for digital beam shaping downstream of the antenna assembly. The invention further relates to a method for object classification. 1. A polarimetric radar , comprising:a transmission assembly comprising transmission antennas that emits circularly polarized waves during operation of the polarimetric radar; anda receiver assembly that receives reflected components of the circularly polarized wave using an antenna assembly during operation of the polarimetric radar,wherein the receiver assembly comprises a plurality of two-channel receivers, which, during operation, simultaneously receive clockwise- and anticlockwise-rotating circularly polarized signal components with a common phase center which are provided for digital beam shaping downstream of the antenna assembly.2. The polarimetric radar according to claim 1 , wherein the transmission assembly comprises a plurality of transmitters in a horizontal direction and a vertical direction claim 1 , the plurality of transmitters having phase center distances which are chosen dependently upon the phase center spacing of individual antenna elements of the antenna assembly of the receiver assembly such that periodically recurring main lobes are suppressed.3. The polarimetric radar according to claim 2 , wherein for digital beam steering in the vertical and the horizontal direction each individual antenna element or groups of antenna elements of the antenna assembly of the receiver assembly has a separate receiving channel for co-polar ...

Radio sensing device and radar system

A radio sensing device includes N antennas, N being a natural number which is one or more, a switching control unit that sequentially switches the antennas and scans radio waves in some directions or all directions in a circular shape or a spherical-shell shape, and a random number generating unit that generates random numbers. The switching control unit performs an operation of switching selecting orders of the N antennas on the basis of the generated random numbers within a time which is M (M; positive integer) times a unit time required to sequentially scan each of all the N antennas once.

APPARATUS AND METHODS FOR DETECTION OF OBJECTS USING BROADBAND SIGNALS

Broadband signal transmissions may be used for object detection and/or ranging. Broadband transmissions may comprise a pseudo-random bit sequence or a bit sequence produced using, a random process. The sequence may be used to modulate transmissions of a given wave type. Various types of waves may be utilized, pressure, light, and radio waves. Waves reflected by objects within the sensing volume may be sampled. The received signal may be convolved with a time-reversed copy of the transmitted random sequence to produce a correlogram. The correlogram may be analyzed to determine range to objects. The analysis may comprise determination of one or more peaks/troughs in the correlogram. Range to an object may be determines based on a time lag of a respective peak. 1. An apparatus for determining range to an object , the apparatus comprising:a transmitter component configured to transmit a broadband signal;a receiver component configured to sample a reflected signal comprised of a reflection of the broadband signal off the object, to produce a sampled signal; and determine a time-reversed instance of the transmitted signal;', 'determine a correlogram, the correlogram comprising a convolution of the time reversed instance of the transmitted signal and the sampled signal at a plurality of lags;', 'compare one or more correlogram values at the plurality of lags to a detection threshold; and', 'based on a given correlogram value breaching the detection threshold, determine a range to the object corresponding to a given lag of the plurality of lags associated with the given correlogram value., 'a processing component configured to2. The apparatus of claim 1 , wherein the broadband signal comprises a sequence of bits obtained based on a random or pseudo-random process claim 1 , the sequence of bits characterized by a frequency invariant power spectral density.3. The apparatus of claim 1 , wherein the broadband signal comprises a sequence of bits obtained based on a process ...

APPARATUS AND METHOD FOR MITIGATING INTERFERENCE IN A FREQUENCY-MODULATED CONTINUOUS-WAVE (FMCW) AUTOMOTIVE RADAR SYSTEM

In a frequency-modulated continuous-wave radar processing system and method, a linear frequency ramp signal is defined. The linear ramp signal is divided into a plurality of time sections. The sections of the linear ramp signal are rearranged in time such that the plurality of sections define a transmit control signal different than the linear ramp signal. A radar transmission signal is generated having a frequency varying with time according to the transmit control signal, and the radar transmission signal is transmitted into the region of interest. An intermediate frequency (IF) signal is generated using the radar transmission signal and radar receive signals received from the region of interest, a frequency of the IF signal being a difference between the frequency of the radar transmission signal and a frequency of the radar receive signals. The IF signal is low-pass filtered. Radar processing is performed on the low-pass-filtered IF signal. 1. A radar processing method in a frequency-modulated continuous-wave (FMCW) radar system , comprising:defining a linear ramp signal having a frequency which varies linearly with time;defining a plurality of time sections of the linear ramp signal, each time section having a time duration, in a first order in time, the plurality of sections being ordered consecutively in time to define the linear ramp signal;rearranging the sections of the linear ramp signal in time such that the plurality of sections are in a second order in time different than the first order, in the second order, the plurality of sections defining a transmit control signal different than the linear ramp signal, the transmit control signal having a frequency which varies piecewise-linearly with time;generating a radar transmission signal, a frequency of the radar transmission signal varying with time according to the transmit control signal;transmitting the radar transmission signal into the region of interest;receiving radar receive signals from the region ...

VEHICULAR RADAR ADJUSTMENT MECHANISM

A vehicle is provided with a forward-looking radar (FLR) assembly. The assembly includes a radar module mounted to a bracket or frame of the vehicle. Because precision in the angular positioning of the radar is desirable, the radar module is designed such that its vertical angular orientation can be adjustable. An adjustment screw connects the radar module and the bracket. The adjustment screw is provided with a plurality of annular flat engagement surfaces between the radar module and the bracket. Rotation of the engagement surfaces rotates the adjustment screw, causing the radar module to angularly adjust relative to the bracket. The engagement surfaces being between the radar module and the bracket allow for adjustment of the adjustment screw from its side in addition to its end surfaces. 1. A vehicle radar assembly comprising:a radar module having a flange;a bracket; anda fastener securing and spacing apart the flange and bracket, the fastener including a threaded shaft threadedly engaged with one of the flange and bracket, and a nut fixed with the shaft between the flange and bracket such that rotation of the nut adjusts a position of the radar module along an axis of the fastener relative to the bracket.2. The assembly of claim 1 , wherein the nut defines a plurality of generally planar engagement surfaces.3. The assembly of claim 1 , wherein the nut is connected to the fastener via a weld connection.4. The assembly of claim 1 , wherein the nut and shaft are a single unitary machined piece.5. The assembly of claim 1 , further comprising a second fastener affixing the flange to the bracket in a fixed spaced-apart relationship to maintain a fixed distance between the flange and the bracket along an axis of the second fastener during rotation of the nut.6. A vehicle radar assembly comprising:a radar module mounted to the vehicle and defining a non-threaded aperture;a bracket spaced from the radar module and defining a threaded aperture; anda fastener having a ...

Antenna and Radar System That Include a Polarization-Rotating Layer

An antenna includes a plurality of waveguide antenna elements arranged in a first array configured to operate with a first polarization. The antenna also includes a plurality of waveguide output ports arranged in a second array configured to operate with a second polarization. The second polarization is different from the first polarization. The antenna further includes a polarization-rotating layer with channels defined therein. The polarization-rotating layer is disposed between the waveguide antenna elements and the waveguide output ports. The channels are oriented at a first angle with respect to the waveguide antenna elements and at a second angle with respect to the waveguide output ports. The channels are configured to receive input electromagnetic waves having the first polarization and transmit output electromagnetic waves having a first intermediate polarization. The waveguide output ports are configured to receive input electromagnetic waves and radiate electromagnetic waves having the second polarization. 1. An antenna , comprising:a plurality of waveguide antenna elements arranged in a first array configured to operate with a first polarization;a plurality of waveguide output ports arranged in a second array configured to operate with a second polarization, wherein the second polarization is different from the first polarization; anda polarization-rotating layer with channels defined therein,wherein the polarization-rotating layer is disposed between the waveguide antenna elements and the waveguide output ports,wherein the channels are oriented at a first angle with respect to the waveguide antenna elements and at a second angle with respect to the waveguide output ports,wherein the channels are configured to receive input electromagnetic waves having the first polarization and transmit output electromagnetic waves having a first intermediate polarization, andwherein the waveguide output ports are configured to receive input electromagnetic waves and ...

AUTONOMOUS REAR VIEWING SENSOR MOUNT

Autonomous vehicles are made by fitting sensors to non-autonomous vehicle platforms. A mounting structure to mount rear-facing sensors to the vehicle is needed to provide sensor data about the rear environment of the vehicle. The mounting structure is secured to the vehicle by utilizing existing vehicle body structures. The vehicle body structures include rearward roof chassis parts that provide stability and security to the mounting structure. 1. An autonomous rear-viewing sensor mount for a vehicle comprising:a bracket fit to the vehicle at an existing rear body structure of the vehicle, the bracket including mounts for sensors including at least one of a lidar and radar,wherein the mounts place the sensors in a rear-facing direction of the vehicle.2. The autonomous rear-viewing sensor mount according to claim 1 , wherein the bracket includes a mounting plate modularly attaching the mounts to different parts of the bracket.3. The autonomous rear-viewing sensor mount according to claim 1 , wherein the existing rear body structure of the vehicle is a roof bow reinforcement.4. The autonomous rear-viewing sensor mount according to claim 1 , wherein the existing rear body structure of the vehicle is a rear header reinforcement.5. The autonomous rear-viewing sensor mount according to claim 1 , wherein the bracket provides access from inside a cabin of the vehicle to the sensors.6. The autonomous rear-viewing sensor mount according to claim 1 , wherein the bracket includes reinforcement plate connections with extendable arms.7. The autonomous rear-viewing sensor mount according to claim 1 , wherein the existing rear body structure of the vehicle is near a highest point of the vehicle.8. A method of mounting an autonomous rear-viewing sensor mount for a vehicle comprising:providing a bracket fit to the vehicle at an existing rear body structure of the vehicle, the bracket including mounts for sensors including at least one of a lidar and radar, and the mounts placing the ...

VEHICLE-MOUNTED RADAR CALIBRATION DEVICE AND METHOD

The present invention relates to the technical field of vehicle maintenance and device calibration, and discloses a vehicle-mounted radar calibration device and method. The vehicle-mounted radar calibration device includes a bracket apparatus and a radar calibration component. The radar calibration component is configured to be installed on the bracket apparatus and includes a base board. After calibration on the vertical plane of the base board is completed, the radar calibration component is configured to reflect a radar wave, emitted by a vehicle-mounted radar of a to-be-calibrated vehicle, to the vehicle-mounted radar, to calibrate the vehicle-mounted radar. In the present invention, after the vertical plane of the base board is calibrated, the radar calibration component is used to reflect the radar wave emitted by the vehicle-mounted radar to the vehicle-mounted radar. 1. A vehicle-mounted radar calibration device , comprising:a bracket apparatus;a radar calibration component, configured to be installed on the bracket apparatus;the radar calibration component comprising a base board, an adjustment bracket, an adjustment rod, mounting brackets, and angle adjustment assemblies, the adjustment bracket being hinged to the adjustment rod, wherein:each angle adjustment assembly comprises a cam disc and a cam spring plate, the cam disc is provided with a cam groove, and the cam spring plate is fixedly installed in the cam groove, the cam spring plate comprises at least three through holes and each of a first positioning hole, a second positioning hole and a third positioning hole is aligned with a corresponding through hole;each mounting bracket is provided with a convex column, the convex column is abutted against the cam spring plate, and a sliding friction occurs between the convex column and the cam spring plate when the convex column slides in the cam groove;the radar calibration component is configured to reflect a radar wave, emitted by a vehicle-mounted radar ...

Radar sensor for vehicle and method for assembling the same

A radar sensor for a vehicle may include: a cover configured to transmit electromagnetic waves; a measurement unit disposed at a position facing the cover, and configured to generate the electromagnetic waves to sense an object; a housing having an internal space in which the measurement unit is disposed, and including an open entrance at which the cover is installed; a shield case coupled to the measurement unit, and configured to block the electromagnetic waves generated by the measurement unit such that the electromagnetic waves are discharged to the entrance; and one or more heat conductors disposed between the measurement unit and the shield case and between the shield case and the housing, and configured to conduct heat, generated by the measurement unit, from the shield case to the housing such that the heat is discharged to the outside of the housing.

Vehicular sensing system using mimo radar sensor units

A vehicular sensing system includes a plurality of multiple input multiple output (MIMO) radar sensor units disposed at a vehicle so as to have respective fields of sensing exterior of the vehicle. Each MIMO radar sensor unit includes a plurality of transmitting antennas and a plurality of receiving antennas, with each transmitting antenna transmitting radar signals and each receiving antenna receiving radar signals. Outputs of the individual MIMO radar sensor units of the plurality of MIMO radar sensor units are provided to an electronic control unit (ECU) using a communication protocol of the vehicle and, responsive to the outputs of the MIMO radar sensor units, the ECU detects objects present exterior the vehicle. The vehicular sensing system adjusts the total number of transmitting and receiving antennas utilized by the plurality of MIMO radar sensor units in accordance with complexity of a surrounding environment of the vehicle.

System and method for weather clutter rejection using polarimetry data for terrain following radar

Embodiments for a terrain following (TF) radar configured for use in an airborne system are generally described herein. In some embodiments, a radar return comprising dual polarimetry radar data is processed to determine a Correlation Coefficient (CC), a Differential Reflectivity (ZDR), and a Specific Differential Phase (KDP). Discriminator logic is applied to the CC, the ZDR and the KDP to determine whether the radar return comprises solely rain. Further signal processing may be performed on the radar return when the radar return does not comprise solely rain. When the radar signal comprises solely rain, the radar return is tagged as a rain return. Applying the discriminator logic may include applying linear and/or quadratic functions to the CC, the ZDR and the KDP to determine whether the radar return comprises solely rain.

SYSTEM AND METHODS FOR CALIBRATING AN ANTENNA ARRAY USING TARGETS

Systems, device and methods are provided for calibrating an antenna array comprising a plurality of antennas such as a plurality of transmit and receive antennas by utilizing an arena comprising one or more targets and a medium. The methods may comprise transmitting a plurality of Radio Frequency (RF) signals from at least one RF antenna of a plurality of RF antennas towards an arena, obtaining by the antenna array affected multiple RF signals from the arena, measuring the plurality of reflected RF signals by a Radio Frequency Signal Measurement Unit (RFSMU) and calculating a plurality of channel responses from said plurality of affected RF signals, providing by at least one processing unit a first model, which is configured to produce an expected electromagnetic (EM) channel responses of the antenna array and the arena and providing a second model, which comprises a relation between the first model and the antenna array calibration parameters and calculating the array calibration parameters to calibrate the antenna array. 1. A method for calibrating a Radio Frequency (RF) antenna array the RF antenna array comprising a plurality of RF antennas , the method comprising:transmitting a plurality of RF signals from at least one RF antenna of said plurality of RF antennas towards an arena;obtaining by said antenna array affected multiple RF signals from said arena;measuring the plurality of reflected RF signals by a Radio Frequency Signal Measurement Unit (RFSMU) and calculating a plurality of channel responses from said plurality of affected RF signals;providing by at least one processing unit a first model, said first model is configured to produce an expected electromagnetic (EM) channel responses of said antenna array and said arena, the first model comprises the antenna array radiation pattern and EM wave propagation in the arena;providing a second model, said second model comprises a relation between the first model and said antenna array calibration parameters; ...

RADAR DEVICE USING DELAY

A radar device according to an embodiment of the inventive concept includes a clock generator, a transmitter, a receiver, and a signal processor. The clock generator outputs the transmission clock, outputs the reception clock at the second time after the delay from the first time when the transmission clock is outputted, and generates the notification signal when the delay has the minimum value. The transmitter emits a transmission signal based on the transmission clock. The receiver receives an echo signal corresponding to the transmission signal, and generates a first signal corresponding to the echo signal based on the reception clock. The signal processor obtains a third time point at which a delay has the minimum value based on the notification signal. 1. A radar device comprising: output a transmission clock,', 'output a reception clock at a second time point after a delay from a first time point at which the transmission clock is outputted, and', 'generate a notification signal when the delay has a minimum value;, 'a clock generator configured toa transmitter configured to emit a transmission signal based on the transmission clock; receive an echo signal corresponding to the transmission signal and', 'generate a first signal corresponding to the echo signal based on the reception clock; and, 'a receiver configured to obtain a third time point at which the delay has the minimum value based on the notification signal,', 'obtain a fourth time point at which the echo signal is received by the receiver based on the first signal, and', 'obtain data associated with a location of a target based on the third time point and the fourth time point,, 'a signal processor configured towherein within a period in which the delay between the first time point and the second time point changes, the delay has one of different values, and the minimum value is a smallest value among the different values.2. The radar device of claim 1 , wherein the transmitter comprises an ...

Pulse generation device

Provided is a pulse generation device capable of suitably adjusting and outputting a pulse pattern by a simple configuration. A pulse generation device ( 100 ) includes a radio frequency oscillator ( 110 ) that generates a carrier wave of a certain frequency, a baseband pulse generating unit ( 120 ) that generates a signal having a certain pulse shape at a baseband, a timing generator ( 130 ) that controls a timing to generate a pulse through the baseband pulse generating unit ( 120 ), and a mixer ( 140 ) that modulates the carrier wave output from the radio frequency oscillator ( 110 ) using the pulse output from the baseband pulse generating unit ( 120 ). The timing generator ( 130 ) can adjust a waveform of the pulse output from the baseband pulse generating unit ( 120 ).

METHODS, DEVICES AND SYSTEMS FOR ENABLING SIMULTANEOUS OPERATION OF DIFFERENT TECHNOLOGY BASED DEVICES OVER A SHARED FREQUENCY SPECTRUM

In one example embodiment, a device includes a memory configured to store computer-readable instructions therein and a processor. The processor is configured to execute the computer-readable instructions to determine a first signal of a first technology in presence of interference from at least a second signal of a second technology, the first signal and the second signal being overlappingly transmitted, the determined first signal being used for processing of information associated with the first signal. 1. A device comprising:a memory configured to store computer-readable instructions therein; and 'determine a first signal of a first technology in presence of interference from at least a second signal of a second technology, the first signal and the second signal being overlappingly transmitted, the determined first signal being used for processing of information associated with the first signal.', 'a processor configured to execute the computer-readable instructions to,'}2. The device of claim 1 , wherein the overlapping transmission of the first signal and the second signal includes transmission of the first signal and the second signal over a shared spectrum.3. The device of claim 2 , wherein the overlapping transmission of the first signal and the second signal includes a spatial overlap of the first signal and the second signal as well as overlaps of the first signal and the second signal in time and frequency domains.4. The device of claim 1 , wherein the processor is further configured to claim 1 ,receive a signal, the signal including the first signal with additive noise corresponding to at least the second signal, andminimize a cost function associated with the received signal, whereinthe processor is configured to determine the first signal as possible sets of values of the first signal that minimize the cost function.5. (canceled)6. The device of claim 4 , whereinthe first signal is a radar fast-time/slow-time data matrix, andthe cost function is formed ...

TIME SYNCHRONIZED RADAR TRANSMISSIONS

Certain aspects of the present disclosure provide techniques for radar detection by an apparatus. In certain aspects a method for radar detection by an apparatus includes selecting one or more radar transmission parameters based on a reference time, wherein the reference time is common to at least a group of vehicles. The method further includes performing radar detection using the selected radar transmission parameters and the reference time. 1. A method for radar detection by an apparatus , comprising:selecting one or more radar transmission parameters based on a reference time, wherein the reference time is common to at least a group of vehicles; andperforming radar detection using the selected radar transmission parameters and the reference time.2. The method of claim 1 , further comprising selecting one or more radar transmission parameters based on a vehicle identification (ID).3. The method of claim 2 , wherein the vehicle ID includes digital information configured to identify one or more of a specific vehicle or the group of vehicles.4. The method of claim 1 , wherein the reference time is based on a universal coordinated time (UTC).5. The method of claim 1 , wherein the radar transmission parameters comprise at least one of: a waveform parameter claim 1 , an antenna parameter claim 1 , or a modulation parameter.6. The method of claim 5 , wherein the waveform parameter comprises at least one of: a slope claim 5 , an offset claim 5 , or a phase.7. The method of claim 5 , wherein the antenna parameter comprises at least one of: a beam form claim 5 , a polarization claim 5 , or an antenna selection.8. The method of claim 5 , wherein the modulation parameter comprises at least one of: a time division multiplexing (TDM) parameter claim 5 , or a frequency division multiplexing (FDM) parameter.9. The method of claim 1 , wherein performing radar detection using the selected radar transmission parameters and the reference time further comprises synchronizing at least ...

MULTI-RADAR COEXISTENCE USING SLOW RATE INTERFERENCE IDENTIFICATION AND SUPPRESSION

Certain aspects provide a method for radar detection by an apparatus. The method generally includes transmitting a radar waveform in sets of transmission time intervals (TTIs), using a common set of radar transmission parameters in each set of TTIs, to perform detection of a target object, varying at least one of the common set of radar transmission parameters between sets of TTIs, and identifying interfering signals based on observed changes in monitored parameters of received signals across sets of TTIs due to the varying. 1. A method for radar detection by an apparatus , comprising:transmitting a radar waveform in sets of transmission time intervals (TTIs), using a common set of radar transmission parameters in each set of TTIs, to perform detection of a target object;varying at least one radar transmission parameter of the common set of radar transmission parameters between sets of TTIs; andidentifying interfering signals based on observed changes in monitored parameters of received signals across sets of TTIs, wherein the observed changes are the result of the varying of the at least one radar transmission parameter.2. The method of claim 1 , wherein each TTI in the sets of TTIs comprises a chirp within a radio frame.3. The method of claim 1 , wherein the radar transmission parameters comprise at least one of: a waveform parameter claim 1 , an antenna parameter claim 1 , or a modulation parameter.4. The method of claim 3 , wherein the waveform parameter comprises at least one of: a slope claim 3 , an offset claim 3 , or a phase.5. The method of claim 1 , further comprising receiving at least one of a codebook claim 1 , a sidelink communication claim 1 , or a network communication comprising radar detection system information configured to vary the one or more radar transmission parameters.6. The method of claim 1 , wherein the monitored parameters comprise at least one of: delay claim 1 , Doppler claim 1 , angle of arrival (AoA) azimuth claim 1 , or AoA ...

Method of Microwave Motion Detection with Adaptive Frequency Control and Related Devices

A method of microwave motion detection with adaptive frequency control, for a microwave motion sensor is disclosed. The method comprises suppressing output of the first detecting signal, wherein the first detecting signal is generated with a first frequency, determining whether a first interference signal is detected in the first frequency during the suppressing, responsive to that the first interference signal is detected in the first frequency, generating a second detecting signal with a second frequency, which is different from the first frequency, and suppressing output of the second detecting signal, determining whether a second interference signal is detected in the second frequency during the suppressing, and responsive to that the second interference signal is not detected in the second frequency, outputting the second detecting signal for motion detection. 1. A method of microwave motion detection with adaptive frequency control , for a microwave motion sensor , the method comprising:suppressing output of a first detecting signal for motion detection, wherein the first detecting signal is generated with a first frequency;determining whether a first interference signal is detected in the first frequency during the suppressing output of the first detecting signal;responsive to that the first interference signal is detected in the first frequency during the suppressing output of the first detecting signal, generating a second detecting signal with a second frequency, which is different from the first frequency, and suppressing output of the second detecting signal;determining whether a second interference signal is detected in the second frequency during the suppressing output of the second detecting signal; andresponsive to that the second interference signal is not detected in the second frequency, outputting the second detecting signal for motion detection.2. The method of claim 1 , wherein determining whether the first interference signal is detected in ...

METHOD FOR OBJECT CLASSIFICATION USING POLARIMETRIC RADAR DATA AND DEVICE SUITABLE THEREFOR

The invention relates to a method for object classification which comprises the following steps for providing an ellipti-cally or circularly polarized transmission signal which is transmitted to the object to be classified: generating a first radar image from the copolarly polarized reflection signal and generating a second radar image from the cross-polarized reflection signal and comparing the first radar image with the second radar image. 1. A method for object classification , the method comprising:a. providing an elliptically or circularly polarized transmission signal, which is transmitted onto the object to be classifiedb. generating a first radar image from the copolarly polarized reflection signal and generating a second radar image from the cross-polarized reflection signal; andc. comparing the first radar image with the second radar image.2. The method as claimed in claim 1 , wherein the generation of the first and second radar images is carried out from at least one of left-circular signal components or right-circular signal components.3. The method as claimed in claim 1 , wherein the generation of the first and second radar images is carried out from linearly horizontal and linearly vertical signal components.4. The method as claimed in claim 1 , wherein the generation of the first and second radar images is carried out simultaneously claim 1 , preferably by means of the transmission signal.5. The method as claimed in claim 1 , wherein the comparison is carried out with the aid of the signal properties of the local maxima of the reflection signals.6. The method as claimed in claim 5 , wherein the comparison is carried out with the aid of the signal properties of individual target regions of the object.7. The method as claimed in claim 5 , wherein the signal properties comprise at least one of the following criteria:number of co-polar local maxima,number of cross-polar local maxima,magnitude ratio between co-polarization and cross-polarization, ...

NOISE MITIGATION IN RADAR SYSTEMS

A noise-mitigated continuous-wave frequency-modulated radar includes, for example, a transmitter for generating a radar signal, a receiver for receiving a reflected radar signal and comprising a mixer for generating a baseband signal in response to the received radar signal and in response to a local oscillator (LO) signal, and a signal shifter coupled to at least one of the transmitter, LO input of the mixer in the receiver and the baseband signal generated by the mixer. The impact of amplitude noise or phase noise associated with interferers, namely, for example, strong reflections from nearby objects, and electromagnetic coupling from transmit antenna to receive antenna, on the detection of other surrounding objects is reduced by configuring the signal shifter in response to an interferer frequency and phase offset. 1. A circuit , comprising:a transmitter for transmitting a radar signal;a receiver for receiving a reflected radar signal, wherein the reflected radar signal includes an interferer signal, wherein the interferer signal contains at least one of an associated amplitude noise skirt or phase noise skirt;a signal shifter in one of the transmitter and the receiver, wherein the signal shifter is operable to signal shift the interferer signal included in the reflected radar signal, wherein the signal shift includes one of frequency shifting or phase shifting.2. The circuit of claim 1 , further comprising an estimator operable to process the received radar signal and estimate a frequency and phase of interferer signal; andwherein the signal shifter is operable to signal shift the interferer signal included in the reflected radar signal in response to the estimation of the frequency and phase of interferer signal.3. The circuit of claim 1 , wherein:the receiver comprises a mixer for generating a baseband signal in response to the received radar signal and in response to a local oscillator (LO) signal;the baseband signal contains a real portion and imaginary ...

Radar sensor, interchangeable radar sensor arrangement, field device and container

A radar sensor device including a first radar sensor arrangement configured to measure a fill level of a medium in a container and a second radar sensor arrangement configured to monitor an environment of the radar sensor outside the container.

Radar transmission time interval randomized radar transmissions

Certain aspects provide a method for radar detection by an apparatus. The method including transmitting a radar waveform in transmission time intervals (TTIs) to perform detection of a target object. The method further includes varying the radar waveform across TTIs based on one or more radar transmission parameters.

ROTATING DEVICE AND ROTATING RADAR DEVICE

A rotating device and a rotating radar device. The rotating device comprises a fixed platform and a rotating platform; the top of the fixed platform and the bottom of the rotating platform are rotatably connected by a rotating shaft, a first bearing, and a second bearing; the rotating shaft is connected to the inner ring; the fixed platform includes a carbon brush and a first magnetic member; the rotating platform includes a second magnetic member and a rotor conductive ring; an outer ring of the first bearing is connected to the fixed platform; an inner ring of the second bearing is connected to the fixed platform, and an outer ring of the second bearing is connected to the rotating platform. 1. A rotating device , comprising a fixing platform and a rotating platform , wherein a top end of the fixing platform and a bottom end of the rotating platform are rotatably connected via a rotating shaft , a first bearing , and a second bearing , the rotating shaft is connected to and extends through an inner ring of the first bearing , and the fixing platform comprises a carbon brush arranged around the rotating shaft and a first magnetic member arranged around the second bearing;the rotating platform comprises a second magnetic member matched with the first magnetic member and a rotor conductive ring matched with and connected to the carbon brush, the rotor conductive ring is arranged around the first bearing;an outer ring of the first bearing is connected to the fixing platform, an inner ring of the second bearing is connected to the fixing platform, an outer ring of the second bearing is connected to the rotating platform, such that the rotating platform is capable of stably rotating around the rotating shaft with respect to the fixing platform, and stable power supply and continuous transmission of communication signal of the rotating platform and the fixing platform are achieved via the carbon brushes and the rotor conductive ring that are matched and connected.2. The ...