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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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01-03-2012 дата публикации

Location Accuracy Improvement Using a priori Probabilities

Номер: US20120052835A1
Автор: Jeffrey F. Bull, Rashidus S. Mia, Robert J. Anderson
Принадлежит: Trueposition Inc

A large volume of high accuracy location data is determined in many commercial wireless networks from location based services (LBS) and, in the United States, for E911. Uplink-Time-Difference-of-Arrival (UTDOA) and Assisted GPS (AGPS) are the predominant geolocation technologies providing these high accuracy locations. In the US alone over 10 million wireless subscribers are located every month because they dial the national emergency number “911” on their mobile phones. This rich set of location data provides an a priori distribution of the location of subscribers in the wireless network. All digital wireless communications networks have a mechanism for the subscribers to time synchronize their handsets to the network. This mechanism provides a band of ranges from the serving cell site to the handset. An a posteriori location estimate can be determined very quickly by considering the a priori distribution of callers in the range band that the current subscriber is in.

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Номер записи: 1
22-11-2012 дата публикации

Acoustic Localization of a Speaker

Номер: US20120294118A1
Автор: Gerhard Uwe Schmidt, Markus Buck, Tim Haulick, Tobias Wolff
Принадлежит: Nuance Communications Inc

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

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Номер записи: 2
24-01-2013 дата публикации

Signal Transponder

Номер: US20130021193A1
Автор: Andreas Schmitz-Peiffer, Markus Hermsen
Принадлежит: Astrium GmbH

A signal transponder for frequency conversion of signals from unknown signal sources is provided. The transponder includes an input for receiving a signal from an unknown signal source, an input filter for filtering the received signal, an input signal amplifier for amplifying the received signal, a mixer for converting the frequency of the amplified and filtered received signal to a predetermined frequency, a local oscillator for generating a clock signal supplied to the mixer for frequency conversion, an output filter for filtering the frequency converted signal, an output signal amplifier for amplifying the frequency converted signal, and an output for transmitting the filtered and amplified frequency converted signal.

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Номер записи: 3
07-02-2013 дата публикации

Likelihood of mobile device portal transition

Номер: US20130035110A1
Автор: Rajarshi Gupta, Vinay Sridhara
Принадлежит: Qualcomm Inc

The subject matter disclosed herein may relate to methods, apparatuses, systems, devices, articles, or means for conditionally performing a scan responsive to a likelihood of a portal transition, etc. For certain example implementations, a method for a mobile device may comprise determining an indication of a likelihood that a position of the mobile device is transitioning from a first area identifiable by a first location context identifier to a second area identifiable by a second location context identifier via a portal linking the first area and the second area; and conditionally performing a scan for signals transmitted by one or more transmitter devices corresponding to the second area responsive to the indication of the likelihood that the position of the mobile device is transitioning to the second area via the portal. Other example implementations are described herein.

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Номер записи: 4
08-08-2013 дата публикации

Selectively performing a positioning procedure at an access terminal based on a behavior model

Номер: US20130203440A1
Автор: Adam W. Perry-Pelletier, Christopher A. Zwickilton, Eric P. Bilange, Gary G. Damm, Ian R. Heidt, Lukas D. Kuhn, Wendell Ruotsi
Принадлежит: Qualcomm Labs Inc

In an embodiment, an access terminal (AT) measures and reports location information when positioned at a user-defined place associated with a geofence to a server, and the server updates a place fingerprint configured to identify the user-defined place based on the reported location information. In another embodiment, the AT or the server obtains location information associated with a set of user-defined places that are identifiable by a set of place fingerprints, determines whether a location event has occurred and updates a behavior model for the access terminal based on the determination. In another embodiment, the AT receives a request for its location and evaluates a set of factors (e.g., the behavior model, etc.) to determine whether to acquire the AT's location with a high power-consumption positioning procedure (e.g., GPS).

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Номер записи: 5
19-09-2013 дата публикации

Method and System for Signal-based Localization

Номер: US20130244688A1
Автор: David Millman, David Stavens, Joseph Huang, Sebastian Thrun
Принадлежит: Leland Stanford Junior University

In an embodiment of the present invention, a GraphSLAM-like algorithm for signal strength SLAM is presented. This algorithm as an embodiment of the present invention shares many of the benefits of Gaussian processes yet is viable for a broader range of environments since it makes no signature uniqueness assumptions. It is also more tractable to larger map sizes, requiring O(N 2 ) operations per iteration. In the present disclosure, an algorithm according to an embodiment of the present invention is compared to a laser-SLAM ground truth, showing that it produces excellent results in practice.

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Номер записи: 6
31-10-2013 дата публикации

SERVICES AND APPLICATIONS FOR A COMMUNICATIONS NETWORK

Номер: US20130285855A1
Автор: Dupray Dennis J., Goldberg Sheldon F.
Принадлежит:

A wireless location system is disclosed including one or more location centers for outputting locations of mobile stations (MS) for both local and global MS location requests via Internet communication between a distributed network of location centers. The system uses a plurality of MS locating technologies including those based on: two-way TOA and TDOA; pattern recognition; distributed antenna provisioning; GPS signals. Difficulties, such as multipath, poor location accuracy and poor coverage are alleviated via such technologies in combination with: (a) adapting and calibrating system performance according to environmental and geographical changes; (b) capturing location signal data for continual enhancement of an historical database; (c) evaluating MS locations via heuristics and constraints related to terrain, MS velocity and MS path extrapolation, and (d) adjusting likely MS locations. The system is useful for 911 emergency calls, tracking, routing, people and animal location including applications for confinement to and exclusion from certain areas. 1. A method for locating a mobile station using wireless signal measurements obtained from transmissions between said mobile station and a plurality of fixed location communication stations , wherein each of said communications stations includes one or more of a transmitter and a receiver for wirelessly communicating with said mobile station , comprising:providing first and second mobile station location evaluators, wherein said location evaluators determine information related to one or more location estimates of said mobile station when said location estimators are supplied with data having values obtained from wireless signal measurements obtained via transmissions between said mobile station and the communication stations, wherein: (i) a first technique for determining, for at least one of the communication stations, one of: a distance, and a time difference of arrival between the mobile station and the ...

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Номер записи: 7
14-11-2013 дата публикации

VEHICLE INCLINATION DETECTING DEVICE

Номер: US20130300609A1
Автор: Inomata Kenji, Ohsawa Takashi, Shikai Masahiro, TSUJITA Wataru, Watanabe Masahiro
Принадлежит: Mitsubishi Electric Corporation

In a vehicle inclination detecting device, a receiving unit includes a switching unit for alternately switching between a received signal from a first receiving antenna and a received signal from a second receiving antenna to alternately output the received signals to an orthogonal detector. The orthogonal detector carries out orthogonal detection on each of the two received signals from the switching unit and an oscillating signal from an oscillator by using an identical line. 1: A vehicle inclination detecting device comprising:a transmitting unit disposed in a vehicle, for emitting a transmission signal which is acquired by rotating a phase of an oscillating signal having a predetermined frequency as a radio wave from a transmitting antenna;a first switching unit for alternately switching between a first received signal which a first receiving antenna acquires by receiving said radio wave reflected from a ground surface and a second received signal which a second receiving antenna acquires by receiving said radio wave reflected from said ground surface to alternately output said first received signal and said second received signal;a second switching unit for switching between said first received signal or said second received signal from said first switching unit and said transmission signal which said second switching unit acquires from said transmitting unit to alternately output said first received signal or said second received signal and said transmission signal;an orthogonal detection unit for carrying out orthogonal detection on said first received signal from said second switching unit and said oscillating signal and carrying out orthogonal detection on said second received signal from said second switching unit and said oscillating signal to alternately get a first amplitude and a first phase and a second amplitude and a second phase, and for carrying out orthogonal detection on said transmission signal from said second switching unit and said ...

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Номер записи: 8
19-12-2013 дата публикации

Location detection within identifiable pre-defined geographic areas

Номер: US20130336138A1
Автор: Gengsheng Zhang, Lionel Jacques Garin, Sai Pradeep Venkatraman
Принадлежит: Qualcomm Inc

Disclosed are systems, apparatus, devices, methods, computer program products, and other implementations, including a method that includes receiving signals at a mobile device from one or more access points, computing one or more positioning quality parameters by analyzing the received signals, and determining based, at least in part, on the computed one or more positioning quality parameters whether the mobile device is inside at least one of one or more areas respectively associated with the one or more access points.

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Номер записи: 9
26-12-2013 дата публикации

Correcting device error radius estimates in positioning systems

Номер: US20130342401A1
Автор: Julia Maureen Letchner, Jyh-Han Lin, Stephen P. Diacetis, YONG Song
Принадлежит: Microsoft Corp

Embodiments adjust device error radiuses associated with inferred device positions produced by positioning systems. Inferred beacon positions and associated beacon radiuses are accessed for beacons in a beacon fingerprint from an observing computing device. The beacon radiuses are associated with a pre-defined confidence level (e.g., an in-circle percentage). A Kalman filter is applied to at least one of the beacons using the inferred beacon positions and the beacon radiuses associated therewith to infer a device position for the computing device and to compute a device error radius for the inferred device position. The computed device error radius is adjusted as a function of the quantity of beacons input to the Kalman filter to achieve the pre-defined confidence level.

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Номер записи: 10
23-01-2014 дата публикации

GEOLOCATION

Номер: US20140022128A1
Автор: Smith David
Принадлежит: ZIVA CORPORATION

In selected embodiments, a process of geolocation of a transmitter uses a receiver with an antenna array that is non-line-of-sight (NLoS) to the transmitter. A first plurality of scatterers within line-of-sight (LoS) of the array is located using multilateration based on time difference of arrival (TDoA) from the first scatterers, and applying a spatial consistency requirement. Time of emission/reflection from the first scatterers is also determined. The coordinates and timing of the first scatterers are used to locate either the transmitter or another set of scatterers, by applying multilateration to the TDoA at the first scatterers, and applying the spatial consistency requirement. The process is iteratively repeated until the transmitter is identified. The multilateration may be linearized without sacrificing precision. In each iteration, a non-singularity requirement is applied to ensure that the selected scatterers produce unambiguous results. 1. A process of geolocation of at least one radio frequency (RE) transmission source using a antenna array , the process comprising steps of:locating a first plurality of scatterers within line-of-sight (LoS) of the antenna array, wherein for each scatterer of the first plurality of scatterers coordinates and time of emission are estimated;locating the at least one. RE transmission source based on the coordinates and the times of emission estimated for the first plurality of scatterers, thereby obtaining coordinates of the at least one RE transmission source; andproviding the coordinates of the at least one RF transmission source, the step of providing comprising at least one of displaying, storing, and transmitting coordinates of the at least one RF transmission source.2. A process of geolocation according to claim 1 , wherein the step for locating the first plurality of scatters is performed using (1) Spatial Consistency algorithm claim 1 , and (2) multilateration based on time difference of arrival (TDoA) of signals at ...

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Номер записи: 11
01-01-2015 дата публикации

A-priori information in indoor positioning

Номер: US20150003265A1
Автор: Mohamed Farouk Mansour
Принадлежит: Texas Instruments Inc

A method to improve position estimates including computing, by a wireless device, a predicted future position of the wireless device from a current location estimate, computing, by the wireless device, a priori probability associated with future position candidates based on the predicted future position, and updating, by the wireless device, the future position candidates with the associated a priori probability.

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Номер записи: 12
06-01-2022 дата публикации

Angle-based positioning and measurement in a telecommunication system

Номер: US20220007325A1
Автор: Yinan QI
Принадлежит: SAMSUNG ELECTRONICS CO LTD

The disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as long term evolution (LTE). Disclosed is a method of determining a User Equipment, UE, location wherein the UE is in communication with at least two base stations (gNB) of a telecommunication network, comprising the steps of: determining at least one of: a) Angle of Arrival, AoA, of a signal from the UE at each of the at least two gNBs; b) Angle of Departure, AoD, of a signal from each of the at least two gNBs; c) AoA of a signal from each of the at least two gNBs at the UE; and d) AoD of a signal from the UE at each of the at least two gNBs; and determining the UE position on the basis thereof.

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Номер записи: 13
05-01-2017 дата публикации

GEOLOCATING A REMOTE EMITTER

Номер: US20170003376A1
Автор: Broad John T., Savage Lee M., Wellman William H.
Принадлежит: Raytheon Company

A method for improving geolocation accuracy in a passive radar warning receiver, using synchronized data curve-fit and interpolation to asynchronous and noisy receiver and navigation measurements over observation periods that are extended to reduce inaccuracies caused by noise. The present disclosure yields synchronized data samples at intervals short enough that constant-rate equations are valid, even though the actual motions over the observation interval may be more complex and have higher-order dynamics. It reduces noise, synchronizes data samples, and is readily adapted to motions with variable acceleration. The method generates rate samples short enough to satisfy constant rate assumptions, yet fit data over intervals long enough to enhances measurement accuracy by reducing measurement noise. 1. A method for geolocating a remote emitter using a passive receiver , the method comprising:calculating an initial estimate of emitter location, based on assumptions, signal amplitude measurements, information from surveillance, or any other means of establishing at least a crude estimate of location;receiving and detecting signals from a remote emitter along with their respective times of arrival via two or more sensors over a series of observation periods, the two or more sensors positioned to receive emitter signals at different locations on a platform;determining an equation form f(t) representing anticipated observed FDOA and/or TDOA variation that accommodates the presumed differential motion of the paired sensors over each of the observation periods, as characterized by at least one of: an unchanging acceleration of the sensors, unchanging velocity, sinusoidal motion of certain frequency, any anticipated characteristic flexure or vibration characteristic of the platform; and any persistent characteristic noted in FDOA, and/or TDOA data;determining equation coefficients for equation f(t) such that it best fits the measured differential phase or time of arrival of ...

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Номер записи: 14
07-01-2021 дата публикации

Method of operating a vehicle

Номер: US20210003229A1
Автор: Gregory A. Stark, Spiro P. Karatsinides
Принадлежит: GE AVIATION SYSTEMS LLC

A method of operating a vehicle includes navigating the vehicle along a path, collecting a set of navigation parameters of the vehicle from at least one of a sensor, a global positioning system, or an inertial reference system, determining a set of statistical uncertainties related to at least some navigation parameters in the set of navigation parameters, and associating a set of statistical weights to the at least some navigation parameters.

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Номер записи: 15
04-01-2018 дата публикации

SYSTEMS AND METHODS FOR OBJECT LOCALIZATION AND PATH IDENTIFICATION BASED ON RFID SENSING

Номер: US20180003813A1
Автор: Cristache Lucian
Принадлежит: Lucomm Technologies, Inc.

A networked radio frequency identification system includes a plurality of radio frequency identification (RFID) tag readers, a computer in signal communication with the RFID tag readers over a network, and a software module for storage on and operable by the computer that localizes RFID tags based on information received from the RFID tag readers using a network model having endpoints and oriented links. In an additional example, at least one of the RFID tag readers includes an adjustable configuration setting selected from RF signal strength, antenna gain, antenna polarization, and antenna orientation. In a further aspect, the system localizes RFID tags based on hierarchical threshold limit calculations. In an additional aspect, the system controls a locking device associated with an access point based on localization of an authorized RFID tag at the access point and reception of additional authorizing information from an input device. 1. A radio frequency system comprising:a first RF tag comprising a radio frequency transmitter logic coupled to a first antenna having a first set of radiating elements forming a radiation pattern;a second RF tag comprising a radio frequency receiver logic coupled to a second antenna having a second set of radiating elements forming a radiation pattern;a sensor;a computer system coupled with the first and the second RF tags;a plurality of semantic attributes stored in the computer system;the computer system being configured to determine a location for the second RF tag based on a signal received by the second RF tag from the first RF tag;the computer system further being configured to infer a first semantic attribute from among a plurality of semantic attributes based on an input from sensor and the determined location for the second RF tag; andwherein the computer system instructs at least one of the first RF tag and the second RF tag to adjust the radiation pattern of the first RF tag or the radiation pattern of the second RF tag ...

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Номер записи: 16
07-01-2021 дата публикации

Proximity Determination Using Radio Devices

Номер: US20210003660A1
Автор: BREDE Steinar
Принадлежит:

A radio system is provided which comprises a radio receiver and a processing system, wherein the radio receiver is configured to detect radio signals transmitted from a radio transmitter on a plurality of frequency channels, and to measure respective signal strengths of the radio signals for each of the plurality of frequency channels. The processing system is configured to evaluate a measure of statistical dispersion of the respective signal strengths over the plurality of frequency channels, and to use the measure of statistical dispersion to determine information relating to a proximity of the radio transmitter to the radio receiver. 1. A radio system comprising a radio receiver and a processing system , wherein:the radio receiver is configured to detect radio signals transmitted from a radio transmitter on a plurality of frequency channels, and to measure respective signal strengths of the radio signals for each of the plurality of frequency channels; andthe processing system is configured to evaluate a measure of statistical dispersion of the respective signal strengths over the plurality of frequency channels, and to use the measure of statistical dispersion to determine information relating to a proximity of the radio transmitter to the radio receiver.236-. (canceled)37. The radio system of claim 1 , wherein the processing system is configured to calculate a separation metric that increases with increasing geometrical distance between the radio transmitter and the radio receiver claim 1 , and wherein the information relating to the proximity of the radio transmitter to the radio receiver comprises said separation metric.38. The radio system of claim 37 , wherein the processing system is configured to calculate the separation metric such that the separation metric decreases monotonically with decreasing statistical dispersion for at least some average signal strengths.39. The radio system of claim 1 , wherein the processing system is configured to use an ...

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Номер записи: 17
03-01-2019 дата публикации

DETECTING RADIO SIGNAL EMITTER LOCATIONS

Номер: US20190004144A1
Автор: McCarthy Nicholas Aaron, McGwier Robert W., O`Shea Timothy James
Принадлежит:

First information is obtained from a sensing device at a first time. The first information corresponds to a radio signal received at the device from a candidate location. The device is at a first location at the first time. Second information is obtained from the device at a second time. The second information corresponds to a radio signal received at the device from the candidate location. The device is at a second location at the second time. A system determines that a pattern is in each of the first and second information and determines relationships between the candidate location and the device at each first and second location. The system obtains inverses of the relationships and determines estimates of the received radio signals based on the information and inverses. The system measures or estimates energy emitted from the candidate location based on the estimates. 1. A method comprising:obtaining, from a sensing device at a first time, first information corresponding to a radio signal received at the sensing device from a candidate location, wherein the sensing device is at a first location in its movement trajectory at the first time;obtaining, from the sensing device at a second time, second information corresponding to a radio signal received at the sensing device from the candidate location, wherein the sensing device is at a second location in its movement trajectory at the second time;determining that a known pattern is present in each of the first information and the second information; determining a first relationship between the candidate location and the sensing device at the first location, and a second relationship between the candidate location and the sensing device at the second location;', 'obtaining a first inverse of the first relationship and a second inverse of the second relationship;', 'determining a first estimate of the radio signal received at the sensing device from the candidate location based on the first information and the first ...

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Номер записи: 18
14-01-2016 дата публикации

DETERMINING LOCATION OF A RECEIVER WITH A MULTI-SUBCARRIER SIGNAL

Номер: US20160011295A1
Автор: Keegan Richard G.
Принадлежит:

A data processor data processor is capable of compensating with multipath phase compensation data for a multipath phase error in the at least one subcarrier phase associated with the multipath-impacted signal arising from the transmitted OFDM-like signal. The phase compensation data results in or comprises an adjustment to the estimated range based on a direct signal vector length of a direct path signal and a multipath-impacted signal vector length of a multipath-impacted signal that are determined through observed signals or observed signal vectors of the receiver. The data processor estimates the location of the receiver or estimated range, based on the precise estimate, with the above adjustment for multipath. 1. A method for determining a location of a receiver using a multi-carrier signal , the method comprising:receiving a plurality of multiplexed multitone signals, each multiplexed multitone signal having subcarriers and modulated with a pseudo-random noise code and transmitted from a transmitter with a known location;determining a coarse estimate of a time of arrival of a set of subcarriers of the multiplexed multitone signals by adjusting the coarse estimate of the time of arrival of the set in accordance with a code correlation function;determining a precise estimate of the time of arrival of the set of subcarriers of the multitone signals by adjusting the precise time of arrival to align the slope of the subcarrier phases of the multitone signals in accordance with a phase correlation function and consistent with the coarse estimate of the time of arrival associated with the code correlation function;estimating the location of the receiver or estimated range between the receiver and the transmitter based on the precise estimate;identifying a multipath-impacted signal arising from the transmitted multitone signal, wherein the identifying is accomplished by evaluating a received amplitude of the at least one subcarrier of the multitone signal; ...

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Номер записи: 19
14-01-2016 дата публикации

DETERMINING LOCATION OF A RECEIVER WITH A MULTI-SUBCARRIER SIGNAL

Номер: US20160011296A1
Автор: Keegan Richard G.
Принадлежит:

A data processor estimates the location of the receiver or estimated range from multicarrier signal. The data processor determines phase compensation data for each ranging subcarrier in the multipath signal. The phase compensation data comprises an adjustment to the estimated range based on a difference between an observed phase of the observed signal vector and a direct path phase of a direct path vector, where the direct path phase is estimated based on one or more prior measurements of a certain observed signal vector when an average amplitude of all (or a majority of) ranging subcarriers converge to substantially the same value. 1. A method for determining a location of a receiver using a multi-carrier signal , the method comprising:receiving a plurality of OFDM-like multitone signals, each OFDM-like multitone signal having subcarriers and modulated with a pseudo-random noise code and transmitted from a transmitter with a known location;determining a course estimate of a time of arrival of at least one subcarrier of the OFDM-like multitone signals by adjusting the course estimate of the time of arrival in accordance with a code correlation function;determining a precise estimate of the time of arrival of at least one subcarrier of the OFDM-like multitone signals by adjusting the precise time of arrival to align the slope of the subcarrier phases of the OFDM-like multitone signals in accordance with a phase correlation function and consistent with the course estimate of the time of arrival associated with the code correlation function;estimating the location of the receiver or estimated range between the receiver and the transmitter based on the precise estimate; anddetermining phase compensation data for each ranging subcarrier comprising an adjustment to the estimated range based on difference between an observed phase of the observed signal vector and a direct path phase of a direct path vector, where the direct path phase is estimated based on one or more ...

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Номер записи: 20
11-01-2018 дата публикации

Radio receiver for determining location of a signal source

Номер: US20180011162A1
Автор: Eric J. Jensen, Reese S. BOVARD
Принадлежит: Concentric Real Time LLC

Systems and methods for determining an accurate location of a signal's source of transmission. The methods involve: demodulating a detected carrier signal modulated with a Pseudo Noise (“PN”) code sequence to obtain an original information-bearing signal therefrom; computing time delay offsets using correlations of PN code windows for each symbol of the original information-bearing signal; determining a high accuracy Time Of Arrival (“TOA”) of the detected carrier signal using the time delay offsets; and using the high accuracy TOA to determine an accurate location of the original information-bearing signal's source of transmission.

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Номер записи: 21
14-01-2021 дата публикации

MOBILE DEVICE LOCATOR

Номер: US20210011111A1
Автор: Li Wei, WANG Xiaoqiang, ZHOU JIE
Принадлежит: ENTIT SOFTWARE LLC

Examples herein involve estimating a first position of a mobile device based on first communication signals, assigning a first set of particles to a number of respective first sampling locations within a threshold distance of the first position, adjusting the assignment of the first set of particles to second sampling locations based on movement of the mobile device, and estimating a second position of the mobile device based on the second sampling locations. 1. A method comprising:performing an analysis of a movement of a mobile device that includes:estimating a first position of the mobile device within an indoor setting based on first communication signals by a fingerprint locator, wherein the first communication signals are first Bluetooth Low Energy (BLE) signals detected and provided by a plurality of BLE beacons positioned within the indoor setting;assigning a first set of particles to a number of respective first sampling locations within a threshold distance of the first position;applying weights to the first set of particles based on their proximity to the first position of the mobile device estimated by the fingerprint locator;adjusting the assignment of the first set of particles to second sampling locations based on movement of the mobile device by removing a number of particles having weights that satisfy a first weight threshold and adding a same number of new particles to the second sampling locations within a threshold distance of particles having weights that satisfy a second weight threshold, the adjusting including application of a respective random drift to at least some of the first set of particles, wherein a random drift applied to at least one first particle among the first set of particles is different from a random drift applied to at least one second particle among the first set of particles; determining that a threshold period of time has elapsed since the mobile device has moved; and', 'determining that a position of the mobile device ...

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Номер записи: 22
12-01-2017 дата публикации

LOCALIZATION USING ACCESS POINT

Номер: US20170013402A1
Автор: Lee Jung Gun, MARIAKAKIS Alexander Timothy, SEN Souvik
Принадлежит:

Localizing a location of a mobile device may be performed by obtaining times of flights between the mobile device and an access point at a first and second location. A heading of the mobile device and a distance between the first and second location may be further obtained. The times of flight, heading, and distance may be used to localize the second location. 1. A method , comprising:obtaining a first time of flight between a mobile device at a first location and an access point;obtaining a second time of flight between the mobile device at a second location and the access point;obtaining a heading of the mobile device;obtaining a distance between the first location and the second location;using the first time of flight, the second time of flight, the heading, and the distance to localize the second location.2. The method of claim 1 , further comprising obtaining the first time of flight or the second time of flight by using a channel impulse response to estimate a positive bias due to multipath and using the positive bias to calculate the first time of flight or the second time of flight.3. The method of claim 1 , further comprising obtaining the first time of flight or the second time of flight by:obtaining a plurality of channel impulse responses of a corresponding plurality of antennas of the access point;combining a plurality of largest components of the channel impulse responses to determine a time of arrival; andusing the time of arrival to determine the first time of flight or the second time of flight.4. The method of claim 1 , further comprising:using the first time of flight to estimate a second distance between the first location and the access point;using the second time of flight to estimate a third distance between the second location and the access pointobtaining a velocity estimate of the mobile device; andusing a Kalman filter applied to the velocity estimate to correct an error in the estimate of the third distance.5. The method of claim 1 , ...

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Номер записи: 23
12-01-2017 дата публикации

Altitude Estimation Using A Probability Density Function

Номер: US20170013589A1
Автор: Dere Jason, Grosman Yefim, Huang Ronald K., MacGougan Glenn Donald, Marti Lukas M., Mayor Robert
Принадлежит: Apple Inc.

Methods, program products, and systems of location estimation using a probability density function are disclosed. In general, in one aspect, a server can estimate an effective altitude of a wireless access gateway using harvested data. The server can harvest location data from multiple mobile devices. The harvested data can include a location of each mobile device and an identifier of a wireless access gateway that is located within a communication range of the mobile device. The server can calculate an effective altitude of the wireless access gateway using a probability density function of the harvested data. The probability density function can be a sufficient statistic of the received set of location coordinates for calculating an effective altitude of the wireless access gateway. The server can send the effective altitude of the wireless access gateway to other mobile devices for estimating altitudes of the other mobile devices. 1. A method , comprising:receiving, by one or more computers, data from one or more sampling devices;determining, by the one or more computers, geographic coordinates and identifiers of wireless access gateways from the received data;identifying, by the one or more computers, one or more wireless access gateways that have moved;removing, by the one or more computers, data of the one or more moved wireless access gateways;estimating, by the one or more computers, locations of the wireless access gateways that have not moved using the received data; andtransmitting the estimated locations of the wireless access gateways that have not moved to one or more requesting devices.2. The method of claim 1 , whereinthe identifying and the removing are performed by a daemon process in response to receiving the data from the one or more sampling devices; andthe estimating is performed periodically or in response to a request and is performed independently from the identifying and removing.3. The method of claim 1 , wherein identifying the one or ...

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Номер записи: 24
09-01-2020 дата публикации

APPARATUS FOR CONFIGURING REFERENCE SIGNAL BEAMS BASED ON ACCURACY OF USER EQUIPMENT LOCALIZATION

Номер: US20200014445A1
Автор: Cai Tao, COSTA Mario, KELA Petteri
Принадлежит:

A network node for a wireless communication system is configured to localize a user node in a first localization operation carried out at a first frequency; determine an accuracy value associated with the first localization operation; and adjust at least one beam parameter for radio beams to be used in a second localization operation based on the determined accuracy value, the second localization operation carried out at a second frequency that is greater than the first frequency. The network node is configured to determine the accuracy value associated with the first localization operation by tracking a rate of change of an angle of a radio beacon signal transmitted from the user node relative to the network node. 1. A network node , comprising:a memory; anda processor coupled to the memory, the processor configured to:localize a user node in a first localization operation carried out at a first frequency;determine an accuracy value associated with the first localization operation;adjust at least one beam parameter for radio beams to be used in a second localization operation based on the determined accuracy value, the second localization operation carried out at a second frequency that is greater than the first frequency; 'track a rate of change of an angle of a radio beacon signal transmitted from the user node relative to the network node; and if the rate of change of the angle exceeds a pre-determined value assign a first value to the accuracy value, the first value being lower than a previous accuracy value and if the rate of change is less than the pre-determined value assign a second value to the accuracy value, the second value being higher than a previous accuracy value.', 'wherein to determine the accuracy value associated with the first localization operation the processor is further configured to2. The network node of claim 1 , wherein the processor is further configured to:receive a movement measurement value from the user node, the movement ...

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Номер записи: 25
09-01-2020 дата публикации

Methods and apparatuses for positioning based on signal correlation function characteristics feedback

Номер: US20200015188A1
Автор: Ali ZAIDI, Fredrik Gunnarsson, Henrik Rydén, Meng Wang, Sara MODARRES RAZAVI
Принадлежит: Telefonaktiebolaget LM Ericsson AB

A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.

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Номер записи: 26
17-01-2019 дата публикации

Radio Frequency Identification Tag Location Estimation and Tracking System and Method

Номер: US20190018101A1
Автор: Jones Christopher Richard, Sadr Ramin, STEPHENS Scott
Принадлежит: Mojix, Inc.

Systems and methods for locating one or more radio frequency identification (RFID) tags are provided. A phase difference of received information signals of illuminated RFID tags is utilized to locate the RFID tags. One or more exciters transmit interrogation signals to illuminate the RFID tags in which the exciters may have a plurality of antenna selectively configured to transmit through two or more antennas and to receive on one antenna. Multiple reads of the same RFID tag can also be performed to generate a probability model of the location of the RFID tag. An enhanced particle filter is applied to probability model to determine the exact location of the RFID. 1. A method of locating one or more radio frequency identification (RFID) tags comprising:illuminating at least one RFID tag with a first interrogation signal from a first transmit antenna and a different second interrogation signal from a second transmit antenna;receiving first and second information signals in response to the first and second interrogation signals from the illuminated at least one RFID tag by at least one receive antenna;determining a set of phase differences for the received first and second information signals from the at least one illuminated RFID tag received by the at least one receive antenna; andidentifying a location of the at least one RFID tag based on the determined phase differences of the first and second received information signals.2. A radio frequency identification (RFID) system for locating one or more RFID tags , the system comprising:at least one RFID tag; a plurality of transmit antennas configured to transmit interrogation signals to illuminate the at least one RFID tag; and', 'at least one receive antenna to receive information signals from the at least one RFID tag; and, 'a plurality of antennas comprising selectively activate the plurality of transmit antennas to transmit a plurality of interrogation signals at different frequencies; and', 'identify a location of ...

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Номер записи: 27
16-01-2020 дата публикации

A METHOD FOR GENERATING AN INDOOR ENVIRONMENT MODEL AND A METHOD FOR DETERMINING POSITION DATA FOR A LOCATION IN AN INDOOR ENVIRONMENT

Номер: US20200018812A1
Автор: ASTROM Karl, Lindquist Björn, Mannesson Anders
Принадлежит:

A method for generating an indoor environment model of a building comprises forming a transmitter location model for defining positions of transmitters in said building using gathered information for establishing transmitter locations (), receiving signal strength indicative measurements being determined for a number of transmitters using at least one electronic communications device (), wherein the signal strength indicative measurements are based on a signal which has varying signal propagation characteristics in the indoor environment, and wherein said signal strength indicative measurements are acquired from a number of known locations in the building, identifying discrepancies of signal transmittance in said indoor environment based on said signal strength indicative measurements in relation to said transmitter location model (), determining locations of signal hindering elements causing said discrepancies (), and generating said indoor environment model including transmitter locations and said signal hindering elements (). 115-. (canceled)16. A method for generating an indoor environment model of a building , said method comprising:forming a communicator location model for defining positions of communicators in said building using gathered information for establishing communicator locations;receiving signal strength indicative measurements being determined for a number of transmitters using at least one electronic communications device, wherein the signal strength indicative measurements are based on a signal which has varying signal propagation characteristics in the indoor environment, and wherein said signal strength indicative measurements are acquired from a number of known locations in the building or locations of said number of transmitters in the building are known;identifying discrepancies of signal transmittance in said indoor environment based on said signal strength indicative measurements in relation to said communicator location model, wherein ...

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Номер записи: 28
16-01-2020 дата публикации

LOCATING RADIO TRANSMISSION SOURCE BY SCENE RECONSTRUCTION

Номер: US20200018814A1
Автор: Cavalcanti Dave A., Felip Leon Javier, Galeev Mikhail T., GONZÁLEZ AGUIRRE David Israel, Perez-Ramirez Javier
Принадлежит:

Systems and techniques for locating a radio transmission source by scene reconstruction are described herein. A multipath radio signal—comprised of two or more multipath components—may be received at an antenna array. A collection of angle-of-arrival (AoA) values may be created from the multipath components. Thus, each AoA in the collection corresponds to one of the multipath components. An optical image of the environment may be obtained and possible reflective surfaces for the multipath components identified in the optical image. A set of paths may be created in a model of the environment by backtracking from the antenna array along the AoAs in the collection of AoA values. Here, the backtracking simulates reflections of the ray off of the surfaces identified in the optical image. A transmitter of the multipath radio signal may then be located via the set of paths. 1. A device to locate a radio transmission source by scene reconstruction , the device comprising:a radio interface; and receive, via the radio interface, a multipath radio signal comprised two or more multipath components at an antenna array;', 'create a collection of angle-of-arrival (AoA) values, each AoA in the collection corresponding to a multipath component in the multipath components;', 'obtain an optical image of an environment;', 'create a set of paths in a model of the environment by backtracking from the antenna array in a direction that is 180 degrees from each of the AoAs in the collection of AoA values including reflections off of surfaces identified in the optical image; and', 'locate a transmitter of the multipath radio signal from the set of paths., 'processing circuitry to2. The device of claim 1 , wherein the multipath radio signal corresponds to transmission of a packet from the transmitter.3. The device of claim 2 , wherein the packet conforms to an IEEE 802.11 family of standards.4. The device of claim 1 , wherein claim 1 , to locate the transmitter via the set of paths claim 1 , ...

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Номер записи: 29
16-01-2020 дата публикации

METHOD AND SYSTEM FOR ESTIMATING RANGE BETWEEN AND POSITION OF OBJECTS USING A WIRELESS COMMUNICATION SYSTEM

Номер: US20200018816A1
Автор: Alexander Paul Dean, Buetefuer John Lawrence, Elbanhawi Mohamed, Khan Malik, Perera Kukulage Nomal Samunda, Robinson Lachlan Travis
Принадлежит:

Methods and systems for estimating range between a first device and a second device using at least one wireless communication channel defined between the first and second devices are disclosed. The method comprises: obtaining a set of range measurements, wherein the range measurements include measurements associated with multiple paths taken by signals between the first and second devices; discarding over-ranges caused by multiple signal paths using a variable threshold; and processing the remaining range measurements to obtain an estimated range. 1. A method for estimating range between a first device and a second device using at least one wireless communication channel defined between the first and second devices , the method comprising:obtaining a set of range measurements, wherein the range measurements include measurements associated with multiple paths taken by signals between the first and second devices;discarding over-ranges caused by multiple signal paths using a variable threshold; andprocessing the remaining range measurements to obtain an estimated range.2. The method of claim 1 , wherein the discarding of over-ranges is an iterative process and the variable threshold is updated at the end of each iteration.3. The method of claim 2 , wherein the iterative process of discarding over-ranges is stopped when a threshold number of range measurements from the set of range measurements are left below a profile of the estimated range obtained from a previous iteration.4. The method of claim 3 , wherein the threshold number of range measurements is a fixed percentile value of total number of measurements in the set of range measurements.5. The method of claim 1 , wherein the method comprises defining a preliminary range profile prior to the discarding of the over-ranges.6. The method of claim 1 , further comprising filtering the over-ranges using a median filter prior to the discarding of the over-ranges claim 1 , the median filter using a window length of K and ...

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Номер записи: 30
19-01-2017 дата публикации

Geo-location in a wireless communication network

Номер: US20170019798A1
Автор: Michael Joseph Flanagan
Принадлежит: Viavi Solutions UK Ltd

A method for geo-location of a wireless communication unit ( 410 ) is provided. The communication unit ( 410 ) communicates with a wireless communication network ( 430 ) of a wireless communication system ( 400 ). A probability density function is derived for the location of the wireless communication unit ( 410 ), from measured information and/or information about the wireless communication network ( 430 ). The probability density function is sampled to provide spatial and probability information about each of at least two possible locations for the wireless communication unit ( 410 ). A wireless communication system ( 400 ) and a method of selecting enhancements to a wireless communication system ( 400 ) are also provided.

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Номер записи: 31
03-02-2022 дата публикации

Angle of arrival capability in electronic devices

Номер: US20220038846A1
Автор: Aditya Vinod PADAKI, Boon Loong Ng, Hoang Viet Nguyen, Hyunchul Kim, Moongee CHO, Moonseok KANG, Neha Dawar, Songwei LI, Yi Yang, Yuming Zhu
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method includes obtaining channel information, range information, and angle of arrival (AoA) information based on wireless signals communicated between an electronic device and an external electronic device. The method also includes generating an initial prediction of a presence of the external electronic device relative to a field of view (FoV) of the electronic device based on the channel information and at least one of the range information or the AoA information. The initial prediction includes an indication of whether the external electronic device is within the FoV or outside the FoV of the electronic device. The method further includes performing, using a tracking filter, a smoothing operation on the range information and the AoA information. Additionally, the method includes determining that the external electronic device is within the FoV of the electronic device based on the AoA information, the smoothed AoA information, and the initial prediction.

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Номер записи: 32
22-01-2015 дата публикации

Method and system for locating and navigating a target

Номер: US20150022400A1
Автор: Edzko Smid, Thomas Stiglich
Принадлежит: NAV-TRACK Inc

Techniques and methodologies are disclosed for minimizing inaccuracies in distance measurements and location determinations for autonomous vehicles or targets ranging to subsets of beacons. Such techniques and methodologies can be used to better control (e.g., navigate) an autonomous vehicle in an area and/or along a pathway, or trajectory.

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Номер записи: 33
03-02-2022 дата публикации

Sample measurement toa correction

Номер: US20220038920A1
Автор: Benny Vejlgaard, Diomidis Michalopoulos, Mikko SÄILY, Oana-Elena Barbu
Принадлежит: NOKIA TECHNOLOGIES OY

Inter-alia, a method is disclosed comprising: obtaining at least two sets of sample measurements, wherein a respective set of sample measurements thereof is indicative of one or more signals that are observable by an antenna, wherein a respective set of sample measurements of the at least two sets of sample measurements is measured with a respective antenna of at least two antennas, and wherein the two antennas have a distance from one another and are comprised by or connectable to an apparatus; determining time-of-arrival, TOA, difference information indicative of a TOA difference between the at least two sets of sample measurements, wherein the TOA difference information is determined based, at least in part, on at least two sets of sample measurements, the determining comprising checking whether the TOA difference reflects said distance between the at least two antennas. Corresponding apparatus, computer program and system are further disclosed.

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Номер записи: 34
17-01-2019 дата публикации

DETERMINING LOCATION VIA WIRELESS ACCESS POINTS

Номер: US20190020977A1
Автор: PANDEY Santosh, Peng Rong
Принадлежит:

Determining a location of a user device comprises a wireless computing system supported by an access point. The wireless computing system receives a signal from the user device. The system estimates a location of the user device based on RSSI and calculates a boundary around the estimated location. The wireless computing system selects a plurality of sections inside of the boundary and performs a coarse calculation of a location of the user device based on an angle of arrival of the received signal. The system determines sections of the plurality of sections that have results from the coarse calculation that are more likely to be a location of the user device. The system performs a fine calculation of the location based on the angle of arrival of the received signal within each of the sections. The system identifies a particular section as the location of the user device. 120-. (canceled)21. A method , comprising:receiving, by each of a plurality of wireless computing system access points (APs) of a wireless computing system, a wireless signal from a user computing device;calculating, by the wireless computing system, a boundary encompassing a first estimated location of the user computing device based on a signal strength of the received wireless signal at each AP;computing, by the wireless computing system, a second estimated location of the user computing device within the boundary based on an angle of arrival of the signal of the received wireless signal at each AP;generating, by the wireless computing system, a third estimated location of the user computing device based the second estimated location; andtransmitting, by the wireless computing system and to the user computing device, a location based on the third estimated location to indicate the location of the user computing device.22. The method of claim 21 , wherein a size of the boundary is based on an estimated accuracy of the calculation based on the received signal strength claim 21 , wherein a higher ...

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Номер записи: 35
21-01-2021 дата публикации

System and Method for Determining a Location Area of a Mobile User

Номер: US20210021956A1
Автор: Bailly Patrick, Laurent Maxence, Taillard Eric, Versteeg Ernst
Принадлежит:

Systems and methods are provided for determining location area of mobile user devices. In a mobile device, a first area probability as a likelihood that the mobile device is located within a first area and a second area probability indicative of the mobile device being located within a second area may be determined, with the first area probability determined based on a first probability and a second probability, and the second area probability determined based on a third probability and a fourth probability. The first probability, second probability, third probability, and fourth probability are determined based on assessing strength received in the respective area from a first base station or a second base station. A determination of whether the mobile device is located in the first area or the second area is made based on the first area probability and the second area probability. 114-. (canceled)15. A method for managing communication in a mobile device , the method comprising: the first probability is a likelihood that a signal received in the first area from a first base station has signal strength above a measured signal strength for a signal received from the first base station, and', 'the second probability is a likelihood that a signal received in the first area from a second base station has signal strength below the measured signal strength;, 'determining, based on a first probability and a second probability, a first area probability as a likelihood that the mobile device is located within a first area, wherein the third probability is a likelihood that a signal received in the second area from the first base station has signal strength above the measured signal strength, and', 'the fourth probability is a likelihood that a signal received in the second area from the second base station has signal strength below the measured signal strength; and, 'determining, based on a third probability and a fourth probability, a second area probability indicative of ...

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Номер записи: 36
21-01-2021 дата публикации

Method and location service component for providing location of device

Номер: US20210021963A1
Автор: Ramamurthy Badrinath, Swarup Kumar Mohalik
Принадлежит: Telefonaktiebolaget LM Ericsson AB

A method and a location service component for providing an estimate of a location related to a device are disclosed. The location service component receives a request from a client for the estimate of the location and estimates the location based on a predictive model to obtain an initial set of data items. Each data item includes a respective estimate of the location and a set of identities representing one or more further devices in a neighborhood of the device. The location service component obtains a respective location for each of the further devices based on the set of identities. The location service component removes data items that are inconsistent with the respective location for the further devices to obtain a pruned set of data items. The location service component sends, estimates of the pruned set of data items to the client. A corresponding computer program and a computer program carrier are also disclosed.

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Номер записи: 37
28-01-2021 дата публикации

System and Method for Detection and Identification of Radio Frequency Source

Номер: US20210025964A1
Автор: Das Koyel, Jaiswal Naveen
Принадлежит: Vehere Interactive Pvt. Ltd.

The present invention discloses a system and a method for detecting, localizing and categorizing radio frequency (RF) emitting sources. In operation presence of one or more RF sources are determined. Further, movement in the detected one or more RF sources is detected based on at least presence of spread power in spatial harmonics and visibility phase measurement. The frequencies of the radio waves at which the movement of one or more RF sources is detected are identified. A localization antenna subsystem is tuned to the identified frequencies one at a time to localize and identify the RF sources. Furthermore, the RF source is classified as an airborne source or ground-based source using radio interferometry imaging. Finally, on determination that the moving RF source is airborne, the interferometric images are further processed to confirm the type of airborne source. 1. A computation subsystem for detecting and localizing Unmanned Aerial Vehicles (UAVs) , the subsystem comprising:a memory storing program instructions; and a processor configured to execute program instructions stored in the memory, the computation subsystem configured to:detecting presence of one or more RF sources around a desired area based on analysis of power level of radio waves received within a selected frequency band around the desired area from a movement detection antenna array;identify frequencies of the radio waves received from the detected one or more RF sources;determine movement of the detected one or more RF sources based on at least a computation of spatial frequencies of the radio waves to identify presence of spread power in spatial harmonics based on the identified frequencies of the radio waves and the computed spatial frequencies; andidentify location of the detected one or more RF sources via a localization antenna subsystem, the localization antenna subsystem is tuned to the identified frequencies of the radio waves, wherein interferometric images of the detected one or more ...

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Номер записи: 38
02-02-2017 дата публикации

GEO-LOCATION OF A WLAN DEVICE USING MOBILE MONITORING STATION

Номер: US20170030998A1
Автор: PASSLER Mark
Принадлежит:

A passive geo-location scheme of Wi-Fi access points is described using one or more mobile measuring stations. The methods and arrangements herein relate to, in one embodiment, using the TSF timer in beacons received by the measuring station, the reported TODs, the TOAs measured by the measuring station and synchronization between the timers of the wireless device and the measuring station. The synchronization includes applying a factor α for correcting the timer associated with the measuring station when the measuring station receives the beacons, applying a factor β for correcting a ratio of timer rates between the timer associated with the wireless device and the timer associated with the measuring station, and applying a factor γ for correcting changes in a timer rate ratio between the first timer associated with the wireless device and the timer associated with the measuring station. 1. A method of determining a location of a wireless device , the method comprising:identifying a plurality of Time of Departures (TODs) of a corresponding plurality of beacons received at a measuring station, each of the plurality of TODs indicating when the wireless device transmitted a beacon to the measuring station according to a timer associated with the wireless device;identifying a plurality of Time of Arrivals (TOAs) corresponding to the plurality of beacons at the measuring station according to a timer associated with the measuring station; applying a factor α for correcting the timer associated with the measuring station when the measuring station receives the plurality of beacons;', 'applying a factor β for correcting a ratio of timer rates between the timer associated with the wireless device and the timer associated with the measuring station; and', 'applying a factor γ for correcting changes in a timer rate ratio between the timer associated with the wireless device and the timer associated with the measuring station;, 'synchronizing the timer associated with the ...

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Номер записи: 39
01-02-2018 дата публикации

PASSIVE RADAR LOCATION OF OBJECTS

Номер: US20180031671A1
Автор: Alexander Paul D., Buetefuer John L., Grant Alexander J., Khan Malik
Принадлежит:

A vehicle or other mobile communication entity () locates objects using received (typically radio frequency) signals (). These received signals included multi-path versions of the transmitted signals (). The received signals may include packets having location information of the transmission source. The receiving vehicle may track, or know, its own position. The receiving entity may determine properties for a multi-path version of the signal (). These properties may include a delay, a Doppler and an angle of reception () for one or more multi-path versions of the received signal. The receiving entity may also measure an imbalance () induced between a pair (or more) of antenna elements () for a particular multi-path version of the signal received. This imbalance may be dependent on the angle of arrival of the particular signal being received. In some embodiments of the invention, the measured imbalance includes two parts: a delta phase (dPhase, ) and a delta Gain (dGain, ). These delta values may be considered as a complex number with phase dPhase and magnitude dGain. 1. A method for receiving a signal comprising the steps of:a) storing a set of dPhase and dGain pairs with corresponding angle of arrival values;b) measuring a dPhase value and dGain value for said signal;c) determining an angle of arrival based on said dPhase value and said dGain value using said set of dPhase and dGain pairs.2. The method as set forth in wherein said set of dPhase and dGain pairs are stored as complex values.3. The method as set forth in wherein said step c) is performed by find a pair of dPhase and dGain values from said set of dPhase and dGain that are closest to said dPhase value and said dGain value.4. The method as set forth in wherein step b is performed using the step of:locking an automatic gain control across a set of receive antennas.5. The method as set forth in further comprising the steps of:receiving a location of a transmitter of said signal;calculating a reflector ...

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Номер записи: 40
31-01-2019 дата публикации

Determining the Position of a Mobile Device Using the Characteristics of Received Signals and a Reference Database

Номер: US20190033423A1
Автор: Moshfeghi Mehran
Принадлежит:

Some embodiments use scanning devices to characterize radio signals received at a number of locations within a geographical area of interest. The signal characteristics along with the location information associated with the characteristics are stored in a centralized reference database. A mobile device characterizes signals it receives at a certain location and compares the characteristics with the signal characteristics stored in the reference database to obtain accurate location information of the certain location. 1. A method of determining a location of a mobile device , the method comprising:receiving a first plurality of signals with known transmission patterns at the mobile device from a set of transmitters, the first plurality of signals comprising at least one multipath signal;computing a first set of parameters from the first plurality of signals using the known transmission pattern;retrieving, from a database, a second set of parameters computed from a second plurality of signals, the second plurality of signals comprising at least one multipath signal, each parameter associated with a location where a corresponding signal from the second plurality of signals was received; andcomparing the first set of parameters with the second set of parameters; anddetermining the location of the mobile device based on the comparison.2. The method of claim 1 , wherein a plurality of transmitters in the set of transmitters transmit over a particular transmission channel claim 1 , wherein the first and second sets of parameters comprise a plurality of parameters characterizing the transmission channel claim 1 , wherein the first and second sets of parameters comprise channel multipath profile and channel fast Fourier transform (FFT) coefficients.3. The method of claim 1 , wherein the mobile device is moving claim 1 , the method further comprising:calculating a velocity of the mobile device; andrevising the determined position of the mobile device based on the velocity of ...

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Номер записи: 41
31-01-2019 дата публикации

Method for Locating Electromagnetic Pulse Emission Sources In An Environment Including Reflectors

Номер: US20190033437A1
Автор: CORNU Cédric, GIACOMETTI Romain, Jahan Daniel
Принадлежит: THALES

The invention relates to a method for locating at least two sources emitting electromagnetic pulses in an environment comprising two reflectors. 1. A method for locating at least two sources emitting electromagnetic pulses in an environment , the environment comprising at least two reflectors , the method comprising:receiving, by a detector, for each source to be located, for an operating duration of the detector, at least one same emitted pulse, received on the one hand directly from said source and received on the other hand by reflection on one of the reflectors;measuring the direction of arrival, the date of arrival and at least one invariant characteristic of each received pulse;identifying, among the received pulses, the pulses received directly and the pulses received by reflection;grouping by pairs of pulses received directly with pulses received by reflection, the pulses of each pair having the same invariant characteristics and different directions of arrival;calculating, for each pair, the difference between the date of arrival of the pulse received by reflection relative to the date of arrival of the pulse received directly; anddetermining the distance of each source from the detector from calculated differences in dates of arrival and from the directions of arrival of the pulses of each pair.2. The method according to claim 1 , wherein the operating duration is made up of time brackets with identical durations claim 1 , the method comprising defining a sliding duration at least equal to the duration of a time bracket claim 1 , said identification and said grouping being carried out over a sliding duration claim 1 , the pulses of each pair belonging to a same time bracket.3. The method according to claim 2 , further comprising claim 2 , for each time bracket claim 2 , sorting the received pulses based on the direction of arrival and on the invariant characteristics of each pulse to obtain sub-series of pulses claim 2 , the pulses of each sub-series ...

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Номер записи: 42
02-02-2017 дата публикации

ACCESS POINT POSITION DETERMINATION BY MOBILE DEVICES CROWD SOURCING

Номер: US20170034657A1
Автор: Amizur Yuval, Banin Leor, Fridman Chagai, Schatzberg Uri
Принадлежит: Intel IP Corporation

Embodiments for performing access point position determination using crowd sourcing are generally described herein. In some embodiments, a range report request is received, by at least one mobile device, from a network entity for determining a position of a plurality of access points (APs). The at least one mobile device performs range measurements on each of the plurality of APs at different locations. A range report associated with the range measurements performed on each of the plurality of APs is sent to the network entity by the at least one mobile device. 130-. (canceled)31. A network entity for determining positions of access points based on crowd sourcing , comprising:a signaling device for receiving and transmitting signals; anda processor, coupled to the signaling device, for processing signals for transmission by the signaling device and for processing signals received by the signaling device;wherein the signaling device is arranged to send a range report request to at least one mobile device for determining a position of a plurality of access points (APs) and is arranged to receive, at the signaling device, a range report associated with range measurements performed by the at least one mobile device on each of the plurality of APs to a network entity.32. The network entity of claim 31 , wherein the range report includes range calculations performed by the at least one mobile device at a plurality of locations identifying a position for each of the plurality of APs.33. The network entity of ; wherein the range report includes the range measurements associated with each of the plurality of APs claim 31 , performed by the at least one mobile device claim 31 , for processing by the processor to determine a position for each of the plurality of APs by the network entity.34. The network entity of further comprising a range model for performing claim 31 , under control of the processor claim 31 , statistical analysis on the range measurements received by the ...

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Номер записи: 43
04-02-2021 дата публикации

DISPLACEMENT MEASUREMENT DEVICE

Номер: US20210033695A1
Автор: AMISHIMA Takeshi, Oshima Tadashi, Suzuki Nobuhiro, TERADA Tsubasa
Принадлежит: Mitsubishi Electric Corporation

Provided is a displacement measurement device including: a radio wave transmitter installed at a measurement position, which is configured to transmit radio waves of a plurality of frequencies from a transmission antenna; and a radio wave receiver installed at a fixed position. The radio wave transmitter includes: a plurality of reception antennas each configured to output received signals indicating the results of receiving the radio waves of the plurality of frequencies; a relative phase combining unit configured to combine, for the plurality of frequencies, relative phases between the plurality of reception antennas; a relative phase shifting unit configured to shift the relative phase between the plurality of frequencies, which is combined by the relative phase combining unit; and a positioning calculation unit configured to calculate the positioning value of the transmission antenna based on the relative phase shifted by the relative phase shifting unit. 1. A displacement measurement device , comprising:a radio wave transmitter installed at a measurement position; anda radio wave receiver installed at a fixed position,wherein the radio wave transmitter is configured to transmit radio waves of a plurality of frequencies via a transmission antenna,wherein the radio wave receiver is configured to calculate a positioning value of the transmission antenna of the radio wave transmitter based on results of receiving the radio waves of the plurality of frequencies transmitted from the radio wave transmitter via the transmission antenna, and M reception antennas (where M represents a positive integer of two or more) each configured to output received signals indicating the results of receiving the radio waves of the plurality of frequencies transmitted from the radio wave transmitter;', 'a relative phase combiner configured to combine, for the plurality of frequencies, relative phases between the M reception antennas;', 'a relative phase shifter configured to shift the ...

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Номер записи: 44
01-02-2018 дата публикации

Angle of arrival (aoa) positioning method and system for positional finding and tracking objects using reduced attenuation rf technology

Номер: US20180035256A1
Автор: Truman Prevatt
Принадлежит: Polte Corp

Systems and methods for determining user equipment (UE) locations within a wireless network using reference signals of the wireless network are described. The disclosed systems and methods utilize a plurality of in-phase and quadrature (I/Q) samples generated from signals provided by receive channels associated with two or more antennas of the wireless system. Based on received reference signal parameters the reference signal within the signals from each receive channel among the receive channels is identified. Based on the identified reference signal from each receive channel, an angle of arrival between a baseline of the two or more antennas and incident energy from the UE to the two or more antennas is determined. That angle of arrival is then used to calculate the location of the UE. The angle of arrival may be a horizontal angle of arrival and/or a vertical angle of arrival

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Номер записи: 45
30-01-2020 дата публикации

UAV POSITIONS METHOD AND APPARATUS

Номер: US20200033888A1
Автор: Han Ke, QIN Zhiqiang, REN Guangyu, Zhou Zhen
Принадлежит:

Apparatus, method and storage medium associated with UAV position estimation are disclosed herein. In embodiments, an UAV may comprise a transmitter-receiver arrangement to transmit and receive communication signals, including receipt of absolute positioning system (APS) signals from one or more APS sensors, and wireless signals from one or more proximately located other UAVs; one or more motors or engines to provide propulsive force for the UAV; and a flight controller coupled to the transmitter-receiver arrangement and the one or more motors or engines to control at least the one or more motors or engines to provide propulsive force to navigate the UAV, based at least in part on the APS and relative positioning signals. Other embodiments may be disclosed or claimed. 1. An unmanned aerial vehicle (UAV) , comprising:a transmitter-receiver arrangement to transmit and receive communication signals, including receipt of absolute positioning system (APS) signals from one or more APS sensors, and relative positioning signals from one or more proximately located other UAVs;one or more motors or engines to provide propulsive force for the UAV; anda flight controller coupled to the transmitter-receiver arrangement and the one or more motors or engines to control at least the one or more motors or engines to provide propulsive force to navigate the UAV, based at least in part on the APS, and relatively positioning signals.2. The UAV of claim 1 , wherein the flight controller is to include a position fusion function to receive nominal position estimates from the position estimation function claim 1 , and the relative positioning signals from the transmitter-receiver arrangement claim 1 , and generate refined position estimates based at least in part on the nominal position estimates claim 1 , and the relative positioning signals.3. The UAV of claim 2 , wherein the position fusion function is to determine one or more distances to the one or more proximately located other UAVs ...

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Номер записи: 46
09-02-2017 дата публикации

GEOLOCATION

Номер: US20170038456A1
Автор: Smith David
Принадлежит:

In selected embodiments, a process of geolocation of a transmitter uses a receiver with an antenna array that is non-line-of-sight (NLoS) to the transmitter. A first plurality of scatterers within line-of-sight (LoS) of the array is located using multilateration based on time difference of arrival (TDoA) from the first scatterers, and applying a spatial consistency requirement. Time of emission/reflection from the first scatterers is also determined. The coordinates and timing of the first scatterers are used to locate either the transmitter or another set of scatterers, by applying multilateration to the TDoA at the first scatterers, and applying the spatial consistency requirement. The process is iteratively repeated until the transmitter is identified. The multilateration may be linearized without sacrificing precision. In each iteration, a non-singularity requirement is applied to ensure that the selected scatterers produce unambiguous results. 1. A process of geolocation of at least one radio frequency (RF) transmission source using a antenna array , the process comprising steps of:locating a first plurality of scatterers within line-of-sight (LoS) of the antenna array, wherein for each scatterer of the first plurality of scatterers coordinates and time of emission are estimated;locating the at least one RF transmission source based on the coordinates and the times of emission estimated for the first plurality of scatterers, thereby obtaining coordinates of the at least one RF transmission source; andproviding the coordinates of the at least one RF transmission source, the step of providing comprising at least one of displaying, storing, and transmitting coordinates of the at least one RF transmission source.2. A process of geolocation according to claim 1 , wherein the step for locating the first plurality of scatters is performed using (1) Spatial Consistency algorithm claim 1 , and (2) multilateration based on time difference of arrival (TDoA) of signals at ...

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Номер записи: 47
31-01-2019 дата публикации

ANGLE OF ARRIVAL (AOA) POSITIONING METHOD AND SYSTEM FOR POSITIONAL FINDING AND TRACKING OBJECTS USING REDUCED ATTENUATION RF TECHNOLOGY

Номер: US20190037350A1
Автор: Prevatt Truman
Принадлежит:

Systems and methods for determining user equipment (UE) locations within a wireless network using reference signals of the wireless network are described. The disclosed systems and methods utilize a plurality of in-phase and quadrature (I/Q) samples generated from signals provided by receive channels associated with two or more antennas of the wireless system. Based on received reference signal parameters the reference signal within the signals from each receive channel among the receive channels is identified. Based on the identified reference signal from each receive channel, an angle of arrival between a baseline of the two or more antennas and incident energy from the UE to the two or more antennas is determined. That angle of arrival is then used to calculate the location of the UE. The angle of arrival may be a horizontal angle of arrival and/or a vertical angle of arrival 1. A method for determining an elevation of a user equipment (UE) in communication with a wireless system , the method comprising:buffering a plurality of in-phase and quadrature (I/Q) samples generated from signals provided by receive channels associated with at least two antennas, wherein a first antenna among the at least two antennas is displaced in a vertical direction with respect to a second antenna among the at least two antennas;identifying the signals from each receive channel among the receive channels as previously known signals based on the buffered I/Q samples;based on the previously known signals from each receive channel, determining an angle of arrival between a baseline of the at least two antennas and incident energy from the UE to at least two antennas; andutilizing the angle of arrival to calculate the elevation of the UE.2. The method of claim 1 , wherein the at least two antennas are antenna elements of an antenna array.3. The method of claim 2 , wherein the antenna elements are located in a single antenna enclosure in a sector.4. The method of claim 2 , wherein the ...

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Номер записи: 48
31-01-2019 дата публикации

ANGLE OF ARRIVAL (AOA) POSITIONING METHOD AND SYSTEM FOR POSITIONAL FINDING AND TRACKING OBJECTS USING REDUCED ATTENUATION RF TECHNOLOGY

Номер: US20190037351A1
Автор: Prevatt Truman
Принадлежит:

Systems and methods for determining user equipment (UE) locations within a wireless network using reference signals of the wireless network are described. The disclosed systems and methods utilize a plurality of in-phase and quadrature (I/Q) samples generated from signals provided by receive channels associated with two or more antennas of the wireless system. Based on received reference signal parameters the reference signal within the signals from each receive channel among the receive channels is identified. Based on the identified reference signal from each receive channel, an angle of arrival between a baseline of the two or more antennas and incident energy from the UE to the two or more antennas is determined. That angle of arrival is then used to calculate the location of the UE. The angle of arrival may be a horizontal angle of arrival and/or a vertical angle of arrival 1. A method for determining a position of a user equipment (UE) in communication with a wireless system , the method comprising:buffering a plurality of in-phase and quadrature (I/Q) samples generated from signals provided by receive channels associated with a plurality of antennas in at least one antenna enclosure, wherein each antenna among the plurality of antennas is displaced in one or more of a vertical direction and a horizontal direction with respect to other antennas among the plurality of antennas;identifying the signals from each receive channel among the receive channels as previously known signals based on the buffered I/Q samples;based on the previously known signals from each receive channel, determining an angle of arrival between a baseline of the plurality of antennas and incident energy from the UE to the plurality of antennas; andutilizing the angle of arrival to calculate the position of the UE.2. The method of claim 1 , wherein the antenna enclosure is an antenna array.3. The method of claim 2 , wherein antenna elements of the antenna enclosure are located in a single ...

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Номер записи: 49
31-01-2019 дата публикации

Systems and methods to facilitate location determination by beamforming of a positioning reference signal

Номер: US20190037529A1
Автор: Rayman Pon, Stephen William Edge, Sven Fischer
Принадлежит: Qualcomm Inc

Techniques are provided for positioning of a mobile device in a wireless network using directional positioning reference signals (PRS), also referred to as PRS beamforming. In an example method, a plurality of directional PRSs are generated for at least one cell for a base station, such that each of the plurality of directional PRSs comprises at least one signal characteristic and a direction of transmission, either or both of which may be distinct or unique. The plurality of directional PRSs is transmitted within the at least one cell, such that each of the plurality of directional PRSs is transmitted in the direction of transmission. A mobile device may acquire and measure at least one of the directional PRSs which may be identified using the associated signal characteristic. The measurement may be used to assist position methods such as OTDOA and ECID and to mitigate multipath.

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Номер записи: 50
11-02-2016 дата публикации

System and Method for Determining a Location Area of a Mobile User

Номер: US20160044458A1
Автор: Eric Taillard, Ernst Versteeg, Maxence Laurent, Patrick Bailly
Принадлежит: Swisscom AG

Systems and methods are provided for determining a location area of a user using a mobile communication terminal in a geographical area covered by a mobile radio network. Antenna probabilities, corresponding to a plurality of antennas located in the geographical area, may be determined for a plurality of sub-areas of the geographical area. The antenna probabilities may be determined based on expected field strengths for the plurality of antennas in each of the plurality of sub-areas, and may indicate for each particular antenna, in each of the plurality of sub-areas, the probability that a mobile communication terminal uses that particular antenna when located in that sub-area. The location area for the user may be determined based on the antenna probabilities and determination of one or more antennas used by the mobile communication termination the user is using, without requiring measuring signal properties at the particular mobile communication terminal.

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Номер записи: 51
12-02-2015 дата публикации

METHOD AND APPARATUS FOR POSITION ESTIMATION USING TRAJECTORY

Номер: US20150045072A1
Автор: Chao Hui, Chen Jiajian, Poduri Sameera
Принадлежит: QUALCOMM INCORPORATED

Techniques for position estimation, e.g., of a mobile communication device, using trajectory are described herein. A method for estimating position of a mobile device described herein includes obtaining a routing graph corresponding to an area, wherein the routing graph indicates traversable paths through the area; collecting trajectory information corresponding to movement of the mobile device through the area; forming a trajectory graph from the trajectory information; comparing the trajectory graph to at least one subset of the routing graph to determine at least one matching subset of the routing graph; and estimating the position of the mobile device based at least in part on the at least one matching subset of the routing graph. 1. A method for estimating position of a mobile device , the method comprising:obtaining a routing graph corresponding to an area, wherein the routing graph indicates traversable paths through the area;collecting trajectory information corresponding to movement of the mobile device through the area;forming a trajectory graph from the trajectory information;comparing the trajectory graph to at least one subset of the routing graph to determine at least one matching subset of the routing graph; andestimating the position of the mobile device based at least in part on the at least one matching subset of the routing graph.2. The method of wherein forming the trajectory graph comprises:identifying turns indicated in the trajectory information of an angle within a threshold range;defining the identified turns as nodes in the trajectory graph; anddefining segments of movement between the identified turns as edges in the trajectory graph.3. The method of wherein the comparing comprises comparing the trajectory graph to the at least one subset of the routing graph based on at least one of length of edges between nodes; number claim 1 , distance and orientation of neighboring nodes; or orientation of edges.4. The method of wherein the comparing ...

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Номер записи: 52
09-02-2017 дата публикации

METHOD AND DEVICE FOR ADJUSTMENT OF AT LEAST ONE PARAMETER OF A COMMUNICATION SYSTEM

Номер: US20170041760A1
Автор: ALIEIEV Roman, HEHN Thorsten, KWOCZEK Andreas
Принадлежит:

A method for adapting at least one parameter of a communication system between two subscribers, wherein at least one subscriber is mobile, in which case a current position of the mobile subscriber is determined at a time and a channel quality for a future time is estimated on the basis of the current position using an environmental model, wherein at least one parameter is changed at the future time on the basis of the estimation. Also disclosed is an apparatus. 1. A method for adapting at least one parameter of a communication system between two subscribers) , wherein at least one subscriber is mobile , the method comprising:{'sub': '0;', 'determining a current position of the mobile subscriber at a time t'}{'sub': 1', '2, 'estimating a channel quality for a future time t, tbased on the current position using an environmental model;'}{'sub': 1', '2, 'changing at least one parameter at the future time t, tbased on the estimation;'}determining the speed of the at least one mobile subscriber;determining a motion vector using the current position and the speed; and{'sub': '1', 'using the motion vector to estimate a position of the mobile subscriber at the time tof the parameter change,'}wherein, to determine the channel quality, the position and motion vector of further mobile subscribers within a communication range between the two subscribers are additionally taken into account.2. The method of claim 1 , wherein both subscribers are mobile subscribers claim 1 , and at least one subscriber transmits its estimated position at the time t claim 1 , tto the other subscriber by a further communication connection.3. The method of claim 1 , wherein the environmental model is an at least three-dimensional digital road map.4. The method of claim 1 , wherein the at least one parameter is a transmission strength and/or a modulation alphabet and/or an information rate and/or an antenna setting of a transmitting and/or receiving antenna.5. The method of claim 2 , wherein the data ...

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Номер записи: 53
18-02-2016 дата публикации

SYSTEMS AND METHODS FOR DETERMINING A POSITION OF A TRANSMITTER OF A BISTATIC RADAR SYSTEM

Номер: US20160047883A1
Автор: Baker James Bryan, Ray Gary Alan
Принадлежит:

A bistatic radar system may include a transmitter, a target at a first known position, a receiver at a second known position, and a transmitter position determination unit. The receiver is configured to receive one or more reflected radar signals transmitted from the transmitter and reflected off the target. The receiver is configured to receive one or more direct radar signals transmitted from the transmitter. The transmitter position determination unit is configured to determine a position of the transmitter based on a determination of a distance between the first and second known positions and a determination of a first angular difference between the reflected radar signal(s) and the direct radar signal(s) that are received by the receiver. 1. A bistatic radar system comprising:a transmitter;a target at a first known position;a receiver at a second known position, wherein the receiver is configured to receive one or more reflected radar signals transmitted from the transmitter and reflected off the target, and wherein the receiver is configured to receive one or more direct radar signals transmitted from the transmitter; anda transmitter position determination unit configured to determine a position of the transmitter based on a determination of a distance between the first and second known positions and a determination of a first angular difference between the one or more reflected radar signals and the one or more direct radar signals that are received by the receiver.2. The bistatic radar system of claim 1 , wherein the transmitter refrains from communicating the position of the transmitter.3. The bistatic radar system of claim 1 , wherein the receiver includes the transmitter position determination unit.4. The bistatic radar system of claim 1 , wherein the transmitter position determination unit is configured to determine a bistatic range difference by measuring a time difference between a first time (T) when the one or more reflected radar signals or the one ...

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Номер записи: 54
24-02-2022 дата публикации

Reporting measurement distribution for positioning

Номер: US20220061014A1
Автор: Alexandros Manolakos, Jay Kumar Sundararajan, Krishna Kiran Mukkavilli, Naga Bhushan, Sooryanarayanan GOPALAKRISHNAN, Taesang Yoo, Tingfang JI, Weimin Duan
Принадлежит: Qualcomm Inc

Techniques are provided for determining a position of a mobile device. An example method of reporting a probability distribution for positioning a mobile device includes obtaining positioning measurements, determining one or more probability distributions of one or more positioning metrics based on the positioning measurements, determining a parametric representation of the one or more probability distributions, and reporting the parametric representation.

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Номер записи: 55
14-02-2019 дата публикации

Systems and methods for coherence based positioning

Номер: US20190049551A1
Автор: Jeremie Miller
Принадлежит: Swfl Inc, Swfl Inc D/b/a "filament"

Systems and methods for discovering a device having an unknown location includes: a first signal source having a first known location and a second signal source having a second known location, the first signal source and the second signal source transmit radio signals using a first radio frequency band during a first search cycle; a sampling receiver having a known location that samples radio signals transmitted by the first signal source and the second signal source during the first search cycle; a disoriented sampling receiver having an unknown location that samples radio signals transmitted by the first signal source and the second signal source during the first search cycle; and a signal processor: aggregates the samples of the radio signals from the sampling receiver and the disoriented sampling receiver; analyzes the aggregated samples of the radio signals; and determines a first set of possible locations of the disoriented sampling receiver.

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Номер записи: 56
25-02-2016 дата публикации

UTILIZING SHORTENED DERIVATIVES OF IDENTIFIERS OF ENTITIES OF COMMUNICATION SYSTEMS FOR RETRIEVING POSITIONING INFORMATION

Номер: US20160054427A1
Автор: BLOMQVIST Mikko Juhani, SYRJARINNE Jari Tapani, WIROLA Laura, WIROLA Lauri Aarne Johannes
Принадлежит:

A method performed by an apparatus, the method comprising obtaining an identifier associated with an entity of a communication system, generating, from said identifier, a shortened derivative of said identifier, and using said shortened derivative of said identifier to retrieve a set of positioning information associated with said entity of said communication system. Also disclosed is a method performed by an apparatus, the method comprising obtaining an identifier associated with an entity of a communication system, obtaining a set of positioning information associated with said identifier, generating, from said identifier, a shortened derivative of said identifier, and associating said shortened derivative with said set of positioning information. 133-. (canceled)34. An apparatus comprising at least one processor and at least one memory including computer program code , said at least one memory and said computer program code configured to , with said at least one processor , cause an apparatus at least to perform:obtaining an identifier associated with an entity of a communication system,using said identifier to try retrieving a set of positioning information associated with said entity of said communication system, and generating, from said identifier, a shortened derivative of said identifier, and', 'using said shortened derivative of said identifier to retrieve a set of positioning information associated with said entity of said communication system., 'if a set of positioning information associated with said entity of said communication system cannot be retrieved using said identifier35. Apparatus according to claim 34 , wherein said set of positioning information is retrievable from a database that stores a plurality of shortened derivatives of respective identifiers associated with respective entities of one or more communication systems and respective sets of positioning information associated with said respective entities of said one or more communication ...

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Номер записи: 57
25-02-2021 дата публикации

POSITION DETERMINATION SYSTEMS AND METHODS UTILIZING ERROR OF MULTIPLE CANDIDATE POSITIONS

Номер: US20210055370A1
Автор: Tolentino Matthew E.
Принадлежит:

Examples of systems and methods described herein may be used to track a tagged object through a scene. Techniques are described herein to calculate a position of the tag using wireless communication with multiple anchor devices. In some examples, the anchor devices may be self-localizing, e.g., they may dynamically determine their position and relationship to one another. In some examples, position of a tag may be calculated by calculating multiple candidate positions using different localization techniques—such as geometric localization techniques and/or optimization-based techniques. An error may also be identified associated with each candidate position. A final position may be determined for the tag based on the errors associated with the candidate positions (e.g., the candidate position with the smallest error may be utilized as the position, e.g., the determined position, of the tag). 1. A method comprising:collecting a set of ranges, each of the set of ranges corresponding to a range between a particular device and a respective anchor device of a plurality of anchor devices;calculating a first candidate position of the particular device based on the set of ranges using a geometric localization technique;estimating error associated with the first candidate position;calculating a second candidate position of the particular device and error associated with the second candidate position using an optimization-based technique, based on residual errors relative to each of the plurality of anchor devices;selecting a determined position for the particular device based on the error associated with the first candidate position and the error associated with the second candidate position.2. The method of claim 1 , further comprising collecting a set of positions for the plurality of anchor devices claim 1 , and wherein using the geometric localization technique is further based on the set of positions.3. The method of claim 1 , further comprising selecting a subset of the ...

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Номер записи: 58
03-03-2022 дата публикации

Unsupervised learning for simultaneous localization and mapping in deep neural networks using channel state information

Номер: US20220070822A1
Автор: Arash BEHBOODI, Farhad Ghazvinian Zanjani, Joseph Binamira Soriaga, Lorenzo Ferrari, Max Welling, Rana Ali AMJAD, Taesang Yoo
Принадлежит: Qualcomm Inc

A method of training an artificial neural network (ANN), receives, from a base station, signal information for a radio frequency signal between the base station and a user equipment (UE). The artificial neural network is trained to determine a location of the UE and to map the environment based on the received signal information and in the absence of labeled data.

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Номер записи: 59
25-02-2021 дата публикации

Network architecture and methods for location services

Номер: US20210058745A1
Автор: David Goodwin Shaw, Felix Markhovsky, Russ Markhovsky, Truman Prevatt, Tyler Matthew Smith
Принадлежит: Polte Corp

UE location determined by collecting and preprocessing signal data at a detector and sending extracted data to a remote locate server. The detector buffers samples from signals provided by receive channels, detects known reference signals from receive channels based on reference signal parameters, isolates symbols carrying the reference signal from frames, extracts data from symbols, and sends extracted data to locate server. The locate server receives the extracted data, estimates locate observables based on the extracted data and calculates the UE location based on the estimated locate observables, the reference signal parameters and the extracted data. The detector and/or the server may also generate correlation coefficients between reference signals carrying spectrum received from a serving cell and utilize the correlation coefficients to cancel a serving cell signal in symbols that include known in advance reference signals from the serving cell and one or more neighboring cells of the wireless system.

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Номер записи: 60
25-02-2021 дата публикации

NETWORK ARCHITECTURE AND METHODS FOR LOCATION SERVICES

Номер: US20210058746A1
Автор: Markhovsky Felix, MARKHOVSKY Russ, Prevatt Truman, SHAW David Goodwin, SMITH Tyler Matthew
Принадлежит:

UE location determined by collecting and preprocessing signal data at a detector and sending extracted data to a remote locate server. The detector buffers samples from signals provided by receive channels, detects known reference signals from receive channels based on reference signal parameters, isolates symbols carrying the reference signal from frames, extracts data from symbols, and sends extracted data to locate server. The locate server receives the extracted data, estimates locate observables based on the extracted data and calculates the UE location based on the estimated locate observables, the reference signal parameters and the extracted data. The detector and/or the server may also generate correlation coefficients between reference signals carrying spectrum received from a serving cell and utilize the correlation coefficients to cancel a serving cell signal in symbols that include known in advance reference signals from the serving cell and one or more neighboring cells of the wireless system. 1. A method for determining a location of a wireless mobile device in a wireless system , the method comprising:at a locate server:receiving extracted resource elements or I/Q samples, wherein the extracted resource elements or I/Q samples are derived from a plurality of buffered samples in a digital format generated from signals provided by one or more receive channels from which known in advance reference signals are detected from each receive channel among the receive channels based on reference signal parameters that describe the known in advance reference signals within the signals, and from which symbols carrying each known in advance reference signals are isolated from one or more frames and/or subframes, and from which the resource elements or I/Q samples are extracted from the symbols on a per symbol basis;estimating locate observables for the wireless mobile device based on the extracted resource elements or I/Q samples; andcalculating the location of ...

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Номер записи: 61
03-03-2016 дата публикации

SYSTEM AND METHOD FOR DETERMINING GEO LOCATION OF A TARGET USING A CONE COORDINATE SYSTEM

Номер: US20160061932A1
Автор: May William D.
Принадлежит: RAYTHEON APPLIED SIGNAL TECHNOLOGY, INC.

A method for determining geo-position of a target by an aircraft includes: receiving navigation data related to the aircraft including aircraft attitude information; receiving multilateration information related to the target including an angle to the target; calculating an axis for a cone fixed to the aircraft, based on the received aircraft attitude information; calculating a central angle for the cone from the received angle to the target; generating two vectors orthogonal to the cone axis; calculating a cone model from the axis, the central angle and the two vectors; and intersecting the cone model with an earth model to obtain a LEP curve, wherein the LEP curve is used to determine the geo position of the target. 1. A method performed by one or more processors for determining geo-position of a target by an aircraft , the method comprising:receiving navigation data related to the aircraft including aircraft attitude information;receiving multilateration information related to the target including an angle to the target;calculating an axis for a cone fixed to the aircraft, based on the received aircraft attitude information;calculating a central angle for the cone from the received angle to the target;generating two vectors orthogonal to the cone axis;calculating a cone model from the axis, the central angle and the two vectors; andintersecting the cone model with an earth model to obtain a locus of emitter positions (LEP) curve, wherein the LEP curve is used to determine the geo position of the target.2. The method of claim 1 , further comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'repeating the method of ;'}accumulating, in a computer storage medium, the plurality of LEP curves; anddetermining a position that is closest to all the accumulated LEP curves to establish a position of the target.3. The method of claim 1 , wherein the model of the earth is digital elevation data.4. The method of claim 3 , wherein the digital elevation data is a ...

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Номер записи: 62
01-03-2018 дата публикации

Ultra-Wide Band Radar and Positional Node Integration

Номер: US20180059231A1
Автор: Brandon DEWBERRY, David Bruemmer, Josh SENNA
Принадлежит: 5D Robotics Inc

A constellation of Ultra-Wide Band (UWB) nodes, each with an UWB transceiver operating both as a monostatic/bi-static Radar, provide precise positional determination of both participating and nonparticipating movable objects. The UWB constellation identifies and locates objects within a geographic area using multipath signal analysis forming an occupancy grid. The resulting occupancy grid can identify parked cars, pedestrians, obstructions, and the like to facilitate autonomous vehicle operations, safety protocols, traffic management, emergency vehicle prioritization, collisions avoidance and the like.

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Номер записи: 63
10-03-2022 дата публикации

APPROACH TO USE POSITIONING REFERENCE SIGNAL(S) (PRS(s)) TRAVELING NON LINE-OF-SIGHT (NLOS) TRANSMISSION PATHS AND MAP INFORMATION FOR POSITIONING OF USER EQUIPMENTS (UEs)

Номер: US20220078581A1
Автор: Chang-Sik Choi, Junyi Li, Kapil Gulati, Piyush Gupta
Принадлежит: Qualcomm Inc

Certain aspects of the present disclosure provide techniques for improving positioning accuracy of user equipments (UEs) using non line-of-sight (NLOS) positioning reference signals (PRS) and map information. A method that may be performed by a UE includes obtaining map information regarding, at least, one or more reflectors in an environment including at least the UE and another node, detecting at least one positioning reference signal (PRS) transmission that travels one or more non line-of-sight (NLOS) transmission paths in the environment, and participating in a positioning procedure that estimates a position of the UE based, at least in part, on the at least one PRS transmission that travels the one or more NLOS transmission paths and the map information.

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Номер записи: 64
28-02-2019 дата публикации

Keyless access system for a motor vehicle, and method for locating a signal generator of the access system (as amended)

Номер: US20190061690A1
Автор: Stefan Hermann
Принадлежит: Continental Automotive GmbH

A keyless access system for a motor vehicle, which includes a portable signal generator for access to one or more doors or flaps of the motor vehicle, wherein the signal generator transmits an enable signal to a receiver unit, mounted on the motor vehicle, by a short-range radio link. The receiver unit permits access to one or more doors or flaps if it is determined that the enable signal is valid and a distance criterion which represents a distance between the signal generator and the motor vehicle is satisfied. The distance criterion results from a comparison of a weighted reception field strength of the short-range radio link between the signal generator and the receiver unit with a threshold value.

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Номер записи: 65
04-03-2021 дата публикации

POSITIONING AND TRACKING SYSTEM AND POSITIONING AND TRACKING METHOD

Номер: US20210067915A1
Автор: CHANG Je-Yao, Chen Chien-Bang, Chen Yu-Yao, Huang Shih-Ping, Liou Chong-Yi, LO Tsu-Yu, MAO Shau-Gang, NEO Jin-Feng, Peng Zheng-An, Tsai Wei-Ting, Wu Ting-Wei
Принадлежит: iWave Technologies Co., Ltd.

A positioning and tracking system is disclosed. The positioning and tracking system includes positioning sensors disposed in a space, wherein the positioning sensors are all movable and all have functions of sensing distance, angle and time, and the positioning sensors communicate with each other to sense relative distances, relative angles and relative times between every two positioning sensors of the positioning sensors. when at least one of the positioning sensors moves in the space, the positioning sensors re-communicate with each other to instantly update the relative distances, the relative angles and the relative times between every two positioning sensors of the positioning sensors. 1. A positioning and tracking system , comprising:a plurality of positioning sensors disposed in a space, wherein the plurality of positioning sensors is all movable and all has functions of sensing distance, angle and time, and the plurality of positioning sensors communicates with each other to sense relative distances, relative angles and relative times between every two positioning sensors of the plurality of positioning sensors;wherein when at least one of the plurality of positioning sensors moves in the space, the plurality of positioning sensors re-communicates with each other to instantly update the relative distances, the relative angles and the relative times between every two positioning sensors of the plurality of positioning sensors.2. The positioning and tracking system of claim 1 , wherein the plurality of positioning sensors communicates with each other through ultra-wideband (UWB) technology.3. The positioning and tracking system of claim 1 , wherein the positioning and tracking system uses circularly polarized antennas with omnidirectional radiation and low time-delay variation to achieve independent orientation of the plurality of positioning sensors.4. The positioning and tracking system of claim 1 , wherein the plurality of positioning sensors comprises at ...

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Номер записи: 66
02-03-2017 дата публикации

System and method for information enhancement in a mobile environment

Номер: US20170064514A1
Автор: Andrew E. Beck, Javier F. CERECEDA, Martin C. Alles, Suryanarayana A. Kalenahalli, Thomas B. Gravely
Принадлежит: Andrew LLC

This disclosure pertains to systems and methods that may be used to increase the information content of a mobile device so as to locate, track, or determine the behavior of a mobile device and/or the user of the mobile device. Separate pieces of information (information snippets) may be aggregated over time to form information linkages. The snippets and linkages may be associated with a time stamp and/or a time frame. The snippets and linkages may be associated with a probability value which may be updated as more information is acquired. The snippets and linkages may be aggregated with, for example a building floor plan to provide more complete informational description of the mobile device and/or the behavior of the user of the mobile device (information map).

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Номер записи: 67
02-03-2017 дата публикации

Method and arrangement for locating a moble device

Номер: US20170064515A1
Автор: Mikael Vainio, Timo Heikkila
Принадлежит: Glopos FZCO

A method for locating an electronic mobile device capable of wireless communication, the method including obtaining a probability map structure for the area of interest, the probability map structure associating environment data values, preferably including cellular network based data, with location data, obtaining a number of probabilistic temporospatial motion models for different types of motion, the models at least partly defining transition probabilities between location estimates relative to time, obtaining at least environment data captured or determined by the mobile device at a plurality of sequential time instances, and determining the most probable location estimate of the mobile device based on combining probability data from both the probability map structure and the motion models, wherein the at least environment data is best fitted in the motion models and probability map structure according to predefined criteria. Related two arrangements and a computer program are presented.

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Номер записи: 68
17-03-2022 дата публикации

METHODS AND APPARATUS FOR LOCATING RFID TAGS

Номер: US20220082651A1
Автор: Adlin Tamara, Blair Adam, Hewett Spencer, MURPHY MICHAEL, Seiff Ken, Wieman Mark
Принадлежит: Automaton, Inc.

A radio frequency identification (RFID) system includes an array of antennas to distinguish line-of-sight (LOS) paths from non-line-of-sight (NLOS) paths. The distance between adjacent antennas in the array of antennas is less than half the wavelength of the radio frequency (RF) signal of the system. Each antenna in the antenna array is also digitally controlled to change relative phase difference among the antennas, thereby allowing digital steering of the array of antennas across angles of arrival (AOAs) between 0 and π. The digital steering generates a plot of signal amplitudes as a function of AOAs. LOS paths are distinguished from NLOS paths based on the shapes (e.g., depth, gradient, etc.) of local extremes (e.g., maxima or minima) in the plot. 1receiving, with a first antenna, a first line-of-sight (LOS) signal from the RFID tag;estimating a first angle-of-arrival, a first phase difference, and a first frequency difference of the first LOS signal;determining a change in the first phase difference with respect to the first frequency difference;receiving, with a second antenna, a second line-of-sight (LOS) signal from the RFID tag;estimating a second angle-of-arrival, a second phase difference, and a second frequency difference of the second LOS signal; anddetermining a change in the second phase difference with respect to the second frequency difference; andestimating a location of the RFID tag based on the first angle-of-arrival, the change in the first phase difference with respect to the first frequency difference, the second angle-of-arrival, and the change in the second phase difference with respect to the second frequency difference.. A method of locating a radio-frequency identification (RFID) tag, the method comprising: This application is a divisional of U.S. application Ser. No. 16/579,949, filed on Sep. 24, 2019, which is a bypass continuation of International Application No. PCT/US2018/024950, filed on Mar. 28, 2018, which in turn claims priority, ...

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Номер записи: 69
28-02-2019 дата публикации

Method for Locating Sources Emitting Electromagnetic Pulses

Номер: US20190064313A1
Автор: CORNU Cédric, GIACOMETTI Romain, Jahan Daniel
Принадлежит:

The present invention relates to a method for locating sources emitting electromagnetic pulses, each source belonging to a carrier platform, the method comprising the following steps: 1. A method for locating at least two sources emitting electromagnetic pulses , each source belonging to a carrier platform , the method comprising:receiving, by a detector, for each source to be located, during an operating duration of the detector, of at least one same emitted pulse, received on the one hand directly and received on the other hand by reflection on the carrier platform of another source;measuring the arrival direction, the arrival date and at least one invariant characteristic of each received pulse;grouping together at least a first pair of pulses of invariant characteristics equal to a first invariant characteristic and of different directions of arrival, and at least one second pair of pulses of invariant characteristics equal to a second invariant characteristic and of same different directions of arrival;calculating the difference of dates of arrival between the pulses of each pair; anddetermining the direction and the distance of each source from the detector based on the calculated differences of dates of arrival of the pulses of each pair.2. The method according to claim 1 , wherein the operating duration is made up of time brackets with identical durations claim 1 , the method further comprising defining a sliding duration at least equal to the duration of a time bracket claim 1 , said grouping being carried out over a sliding duration claim 1 , the pulses of each pair belonging to the same time bracket.3. The method according to claim 2 , further comprising claim 2 , for each time bracket claim 2 , sorting the received pulses based on the direction of arrival and on at least one invariant characteristic chosen from among the measured characteristic(s) of each pulse claim 2 , to obtain sets of pulses claim 2 , the pulses of each set having equal directions of ...

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Номер записи: 70
27-02-2020 дата публикации

Detecting radio signal emitter locations

Номер: US20200064434A1
Автор: Nicholas Aaron Mccarthy, Robert W. Mcgwier, Timothy James O`Shea
Принадлежит: Hawkeye 360 Inc

First information is obtained from a sensing device at a first time. The first information corresponds to a radio signal received at the device from a candidate location. The device is at a first location at the first time. Second information is obtained from the device at a second time. The second information corresponds to a radio signal received at the device from the candidate location. The device is at a second location at the second time. A system determines that a pattern is in each of the first and second information and determines relationships between the candidate location and the device at each first and second location. The system obtains inverses of the relationships and determines estimates of the received radio signals based on the information and inverses. The system measures or estimates energy emitted from the candidate location based on the estimates.

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Номер записи: 71
27-02-2020 дата публикации

CLASSIFYING POTENTIALLY STATIONARY OBJECTS TRACKED BY RADAR

Номер: US20200064436A1
Автор: Dang Wenbing, Nagaraja Keerthi Raj, Schiffmann Franz P., Schiffmann Jan K., Vishwajeet Kumar
Принадлежит:

An illustrative example method of tracking a detected object comprises determining that a tracked object is near a host vehicle, determining an estimated velocity of the tracked object, and classifying the tracked object as frozen relative to stationary ground when the estimated velocity is below a preselected object threshold and a speed of the host vehicle is below a preselected host threshold. 1. A method of tracking a detected object , the method comprising:determining that a tracked object is near a host vehicle;determining an estimated velocity of the tracked object; andclassifying the tracked object as frozen relative to stationary ground when the estimated velocity is below a preselected object threshold and a speed of the host vehicle is below a preselected host threshold.2. The method of claim 1 , wherein classifying the tracked object as frozen comprises freezing a determined orientation claim 1 , length claim 1 , width claim 1 , and centroid position of the tracked object with respect to stationary ground.3. The method of claim 1 , wherein when the tracked object is classified as frozen claim 1 , periodically updating an estimate of speed claim 1 , curvature claim 1 , and yaw rate for the tracked object.4. The method of claim 3 , comprising estimating the speed claim 3 , curvature claim 3 , yaw rate claim 3 , and position of the object using a Kalman filter.5. The method of claim 1 , comprisingclassifying the tracked object as not frozen when the speed of the host vehicle exceeds the preselected host threshold or the estimated velocity of the tracked object exceeds the preselected object threshold.6. The method of claim 1 , wherein the object is a second vehicle.7. The method of claim 6 , wherein the second vehicle is oriented in a direction parallel to the host vehicle.8. The method of claim 1 , wherein the estimated velocity of the object is an over the ground velocity.9. The method of claim 1 , wherein the estimated velocity of the object is a ...

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Номер записи: 72
11-03-2021 дата публикации

RANGING WITH A MOBILE CELLULAR DEVICE

Номер: US20210076349A1
Автор: Ioffe Anatoliy Sergey, Nabar Rohit U., Vazny Rastislav
Принадлежит:

Systems and methods for using ranging signals with cellular devices. The ranging signals may utilize ranging slots and resources at least partially allocated by a cellular network. The resources may include frequencies used for uplink or downlink communications between the cellular network and the cellular devices. Alternatively, the resources may include frequencies outside of a spectrum used for communication between the cellular network and the cellular devices. 1. An electronic device , comprising:one or more antennas; selectively send and receive cellular communications signals using the one or more antennas in corresponding communication slots for cellular communications for a cellular network; and', 'selectively send ranging signals and receive reflected ranging signals using the one or more antennas during ranging slots; and, 'a network interface coupled to the one or more antennas and configured toa processor operably coupled to the network interface and configured to determine a location of an obstacle or a location of the electronic device using the reflected ranging signals.2. The electronic device of claim 1 , wherein a slot of the ranging slots comprises:a ranging transmission portion, wherein the electronic device is configured to transmit the ranging signals during the ranging transmission portion of the slot; anda ranging receiving portion, wherein the electronic device is configured to monitor for the reflected ranging signals transmitted during the ranging transmission portion of the slot.3. The electronic device of claim 1 , wherein:a first slot of the ranging slots comprises a ranging transmission portion, wherein the electronic device is configured to transmit the ranging signals during the ranging transmission portion of the first slot, anda second slot of the ranging slots comprises a ranging receiving portion, wherein the electronic device is configured to monitor for the reflected ranging signals transmitted during the ranging transmission ...

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Номер записи: 73
17-03-2016 дата публикации

TERRESTRIAL POSITIONING SYSTEM CALIBRATION

Номер: US20160077185A1
Автор: MARSHALL Grant Alexander, Moeglein Mark Leo
Принадлежит:

Embodiments disclosed aggregate a plurality of crowdsourced measurement sets for antennas received from a plurality of Mobile Stations (MS) with a Base Station Almanac (BSA), based on a measurement location estimate and a measurement location uncertainty estimate associated with each measurement set. A map comprising a plurality of map layers may be obtained, where each map layer associates locations in the BSA with spatially variable Forward Link Calibration (FLC) values for the antenna derived from the updated BSA data, wherein each spatially variable FLC value is associated with a corresponding location in the updated BSA data. Map layers, which may also include multipath map and/or received signal strength layers, may be provided to MS′ as location assistance data. 1. A method on a Mobile Station (MS) comprising:obtaining location assistance data comprising a map, the map comprising a plurality of map layers, the plurality of map layers comprising one or more Forward Link Calibration (FLC) map layers, wherein each FLC map layer associates a plurality of entries in a Base Station Almanac (BSA) with corresponding spatially variable Forward Link Calibration (FLC) values for signals transmitted by one or more antennas;performing, based on the location assistance data, measurements to obtain measurement sets comprising signal measurements for a subset of the one or more antennas, wherein each measurement set corresponds to an antenna in the subset of the one or more antennas;determining calibrated measurements by applying, based on the location assistance data, a calibration comprising at least one spatially variable FLC value corresponding to a first position estimate of the MS to each measurement in at least one measurement set; anddetermining a second position estimate of the MS and a corresponding position uncertainty based, in part, on the calibrated measurements in the at least one measurement set.2. The method of claim 1 , further comprising: one or more ...

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Номер записи: 74
17-03-2016 дата публикации

Calculating Mean Wireless Signal Strengths Using a Gaussian Process Approach Incorporating Predictive Standard Deviations

Номер: US20160077190A1
Автор: Julian Brian John
Принадлежит:

Disclosed are apparatus and methods for providing outputs; e.g., location estimates, based on measurement bins (MBs) determined by a computing device. An MB can be associated with a wireless signal emitter (WSE), and can include a mean signal strength value (SSV) and a standard deviation of SSVs for each WSE associated with the MB. The computing device can designate a WSE. The computing device can determine a collection of the MBs associated with the designated WSE. The computing device can train a mean Gaussian process for the designated WSE based on the mean SSV and the standard deviation of SSVs of the collection of MBs. The mean Gaussian process can be associated with a covariance matrix having a diagonal entry based on a standard deviation of SSVs of an MB in the collection of MBs. The computing device can provide an estimated location based on the trained mean Gaussian process. 1. A method , comprising:determining by a computing device a plurality of measurement bins, wherein a particular measurement bin of the plurality of measurement bins is associated with one or more wireless signal emitters, and wherein the particular measurement bin comprises a mean signal strength value and a standard deviation of signal strength values for each wireless signal emitter of the one or more wireless signal emitters associated with the particular measurement bin;determining by the computing device a designated wireless signal emitter;determining by the computing device a collection of measurement bins of the plurality of measurement bins, wherein a particular measurement bin in the collection of measurement bins is associated with the designated wireless signal emitter;training by the computing device a mean Gaussian process to model signals emitted by the designated wireless signal emitter based on the mean signal strength values of the collection of measurement bins and the standard deviation of signal strength values of the collection of measurement bins, wherein the ...

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Номер записи: 75
17-03-2016 дата публикации

Gaussian Process-Based Approach for Identifying Correlation Between Wireless Signals

Номер: US20160077191A1
Автор: Julian Brian John, Le Grand Etienne, Williams Brian Patrick
Принадлежит:

Disclosed are apparatus and methods for providing outputs; e.g., location estimates, based on trained Gaussian processes modeling signals of wireless signal emitters. A computing device can determine first and second trained Gaussian processes. The respective first and second Gaussian processes can be based on first and second hyperparameter values related to first and second wireless signal emitters. The computing device can determine first and second sets of comparison hyperparameter values of the respective first and second hyperparameter values, and then determine whether the first and second sets of comparison hyperparameter values are within one or more threshold values. After determining that the first and second sets of comparison hyperparameter values are within the threshold(s), the computing device can determine the first and second Gaussian processes are dependent and then provide an estimated-location output based on a representative Gaussian process based on the first and the second Gaussian processes. 1. A method , comprising:determining, by a computing device, a plurality of trained Gaussian processes that model signals emitted by a plurality of wireless signal emitters, each Gaussian process of the plurality of trained Gaussian processes based on one or more hyperparameters, wherein the plurality of trained Gaussian processes comprises a first Gaussian process and a second Gaussian process, wherein the first Gaussian process is based on first hyperparameter values of the one or more hyperparameters related to a first wireless signal emitter of the plurality of wireless signal emitters, and wherein the second Gaussian process is based on second hyperparameter values of the one or more hyperparameters related to a second wireless signal emitter of the plurality of wireless signal emitters;determining, by the computing device, a set of comparison hyperparameters from the one or more hyperparameters;determining, by the computing device, a first set of ...

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Номер записи: 76
15-03-2018 дата публикации

DETERMINING A LOCATION OF AN ELECTRONIC TAG IN AN AREA USING PROBABILISTIC METHODS

Номер: US20180074159A1
Автор: B Ravi Kishore, MULLESSARY Sajana, NEMALA Ravi Chandra Sekhar
Принадлежит:

The present disclosure relates to system(s) and method(s) to determine a location of an electronic tag in an area. The system is configured to transmit a series or radio messages and receive one or more response radio messages from an electronic tag, through a transceiver. Further, the system is configured to determining metadata corresponding to each response radio message and distance covered by the transceiver at the time of transmitting the radio message. Based on the distance covered and metadata associated with each response radio message, the system is configured to determine the exact location of the electronic tag in an area. 1. A system for determining a location of an electronic tag in an area , the system comprising: transmitting a series of radio messages to an electronic tag in the vicinity of the transceiver, wherein the transceiver is configured to travel a distance after transmitting each radio message from the series of radio messages, and', 'receiving one or more response radio messages, corresponding to one or more radio messages of the series of radio messages, from the electronic tag;, 'a transceiver configured for'}a memory, and [ metadata corresponding to the response radio message, wherein the metadata includes a signal phase and a signal strength corresponding to the response radio message, and', 'a distance covered by the transceiver at the time of transmitting the radio message;, 'determining, for each response radio message,'}, 'analyzing the distance covered by the transceiver and the metadata for each response radio message using a probabilistic model to determine a probability of occurrence of the electronic tag at each location associated with the area; and', 'identifying a target location corresponding to the electronic tag, from the set of locations in the area, based on the probability of occurrence corresponding to each location in the area., 'a processor coupled to the memory, wherein the processor is configured to execute ...

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Номер записи: 77
15-03-2018 дата публикации

BEACON AND ASSOCIATED COMPONENTS FOR A RANGING SYSTEM

Номер: US20180074161A1
Автор: Doerres Don, Heiner Jae, Laughlin Gordon J., Rosenbaum Glen Var
Принадлежит:

A beacon () for a ranging system includes an electronic scanned array (ESA) antenna and a transceiver. The ESA antenna is configured to emit a separate radio frequency (RF) phased-array narrow beam () for each of a plurality of segments of an arc, and receive from an end user node () a response signal based on at least one of the RF phased-array narrow beam (). Each segment of the arc is scanned at a specified time interval. The transceiver is configured to transmit a pulsed signal via the RF phased-array narrow beam (), and receive the response signal. 1. A beacon for a ranging system , comprising:an electronic scanned array (ESA) antenna configured to emit a separate radio frequency (RF) phased-array narrow beam for each of a plurality of segments of an arc, and configured to receive from an end user node a response signal based on at least one of the RF phased-array narrow beam, wherein each segment of the arc is scanned at a specified time interval; anda transceiver configured to transmit a pulsed signal via the RF phased-array narrow beam, and receive the response signal.2. The beacon of claim 1 , further comprising:a processing module configured to calculate at least one of an angle-of-arrival (AOA) and a time-of-flight (TOF) from the response signal and generate a location of the end user node relative to a location of the beacon.3. The beacon of claim 2 , wherein the processing module is further configured to perform at least one of a measurement of a received signal strength indicator (RSSI) from the received response signal claim 2 , and a determination of an absolute location of the end user node by information selected from the group consisting of GPS coordinates claim 2 , horizontal level adjustments claim 2 , rotational face direction of the ESA antenna claim 2 , angle adjustment of the ESA antenna claim 2 , and combinations thereof.4. The beacon of claim 1 , further comprisinga node networking antenna configured to communicate with at least one of ...

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Номер записи: 78
07-03-2019 дата публикации

Method for Selecting Signals of Opportunity for Passive Coherent Location

Номер: US20190072634A1
Автор: Chergui Mohammed, Johnson Nicholas T., Rockway John D., Sternberg Oren
Принадлежит: United States of America as represented by Secretary of the Navy

A signal evaluation system is provided for evaluating a first EM signal and a second EM signal for use in a passive coherent location system. The signal evaluation system includes: a spectrum detecting component that detects the first EM signal and the second EM signal; a signal characterization component that generates a first characterization of the first EM signal and to generate a second characterization of the second EM signal; and a ranking component that ranks the EM signals for use in the passive coherent location system. The first characterization is based on an amplitude associated with the first EM signal and one of range resolution, Doppler resolution, and combinations thereof associated with the first EM signal. The second characterization is based on an amplitude associated with the second EM signal and one of range resolution, Doppler resolution, and combinations thereof associated with the second EM signal. 1. A signal evaluation system for evaluating a first EM signal and a second EM signal for use in a passive coherent location system , said signal evaluation system comprising:spectrum detecting component operable to detect the first EM signal and the second EM signal within an electromagnetic spectrum;a signal characterization component operable to generate a first characterization associated with the first EM signal and to generate a second characterization associated with the second EM signal; anda ranking component operable to rank the first EM signal with reference to the second EM signal for use in the passive coherent location system based on the first characterization and the second characterization,wherein the first characterization is based on an amplitude associated with the first EM signal and one of range resolution, Doppler resolution, and combinations thereof associated with the first EM signal, andwherein the second characterization is based on an amplitude associated with the second EM signal and one of range resolution, Doppler ...

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Номер записи: 79
31-03-2022 дата публикации

METHOD AND DEVICE FOR POSITIONING UTILIZING BEAM INFORMATION

Номер: US20220099785A1
Автор: Berggren Anders, Karlsson Peter, PRIYANTO Basuki
Принадлежит:

A wireless communications device () includes a wireless interface () for conducting wireless communications with one or more network nodes () of a wireless communications network (). The wireless communications device () further includes a control circuit () configured to receive a plurality of reference signals transmitted by the one or more network nodes (), measure the plurality of reference signals to generate a plurality of positioning measurements, associate the plurality of positioning measurements with beam information, and select a set of positioning measurements with associated beam information for determining a positioning estimate of the wireless communications device (). 1. A method for providing beam-related information for positioning of a user equipment , comprising:receiving a plurality of reference signals transmitted by one or more network nodes;generating a plurality of positioning measurements based on the plurality of reference signals;associating the plurality of positioning measurements with beam information; andselecting a set of positioning measurements with associated beam information to utilize for a positioning estimate.2. The method of claim 1 , further comprising reporting the selected set of positioning measurements with associated beam information to a positioning computation node for estimating a position of the user equipment.3. The method of claim 2 , wherein the selected set of positioning measurements with associated beam information is reported in accordance with instructions received from a network node.4. The method of claim 1 , further comprising estimating claim 1 , by the user equipment claim 1 , a position of the user equipment based on the selected set of positioning measurements with associated beam information.5. The method of claim 4 , wherein estimating the position of the user equipment is further based on positions of the one or more network nodes.6. The method of claim 1 , wherein selecting the set of positioning ...

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Номер записи: 80
22-03-2018 дата публикации

DEVICE FOR RECOMMENDING LOCATION IN BUILDING BY USING FINGERPRINT OF ACCESS POINT, AND METHOD USING SAME

Номер: US20180084382A1
Автор: KIM Min-Soeng
Принадлежит:

Disclosed are a device for recommending locations in a building using fingerprints of access points and a method using the device. The locations of access points are detected by collecting fingerprints for the access points from terminals of multiple users, the locations of stores in the building are detected by using the fingerprints and payment histories of the multiple users, and locations may be recommended to a recommendation target user based on a meta-path, using a metamap generated by integrating the locations of the access points and stores with the indoor plan of the building. Indoor positioning is enabled by detecting the locations of access points using the information obtained from the terminals of multiple users, whereby constructing infrastructure information for the access points in the building in advance may not be required. 1. A device for recommending a location in a building , comprising:an access point location detection unit for detecting locations of one or more access points by collecting fingerprints for the one or more access points installed in the building from terminals of multiple users;a store location detection unit for detecting locations of stores in the building using the fingerprints and payment histories of the multiple users;a metamap generation unit for generating a metamap by integrating the locations of the one or more access points and the locations of the stores with an indoor plan of the building; anda location recommendation unit for recommending a location to the recommendation target user using the metamap.2. The device of claim 1 , wherein the store location detection unit detects locations of one or more adjacent stores located in a range predetermined based on each of the one or more access points among the stores claim 1 , using a difference between a time when each of the fingerprints is obtained and a payment time included in the payment histories.3. The device of claim 2 , wherein the store location detection ...

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Номер записи: 81
22-03-2018 дата публикации

PREDICTION FOR POWER CONSERVATION IN A MOBILE DEVICE

Номер: US20180084503A1
Автор: BEN-DAYAN ADI, Haik Fadi, KAPLAN OR, Oren Gilad, Yariv Eran
Принадлежит:

Architecture that facilitates power conservation in mobile devices such as cell phones using prediction. The architecture is an algorithmic-based solution that transforms infrequently-captured geolocation data of an entity into a continuous probable location approximation. Given the location history and additional data about the recent location of the mobile device, the current location of the device can be estimated with some probability. Additionally, given the location history and additional data about the recent location of the device, the probability of the device actually being at a given point on a map is computed. 1. A mobile device comprising:a processor; andcomputer storage memory having computer-executable instructions stored thereon which, when executed by the processor, configure the mobile device to:wherein the mobile device is associated with a first user;access, at the mobile device, location updates of a second user, the location updates of the second user periodically stored on a network for access by the mobile device as provided by a second mobile device associated with the second user; andestimating a realtime geographical location of the second user based on processing of a location update that shows a previous location of the second user, the estimating performed at the mobile device rather than accessing the network for additional location updates of the second user; andoutputting for display on the mobile device the estimated realtime geographic location of the second mobile device.2. The mobile device of claim 1 , wherein the location updates include at least one of geographical coordinates of the location of the second user claim 1 , or metadata comprised of speed information and navigation vector of the second user.3. The mobile device of claim 1 , wherein the geographical point of the second user is estimated based on a destination of the second user.4. The mobile device of claim 1 , wherein the geographical point of the second user is ...

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Номер записи: 82
31-03-2022 дата публикации

Secure Channel Estimation Architecture

Номер: US20220104019A1
Автор: Chen Xu, Marquez Alejandro J., Narang Mohit, Sen Indranil S., Yang Shang-Te
Принадлежит:

Wireless communication between two electronic devices may be used to determine a distance between the two devices, even in the presence of an otherwise-disruptive attacker. A wireless receiver system of one device may receive a true wireless ranging signal from a first transmitting device and a false wireless ranging signal from an attacker. The wireless receiver system may correlate the wireless signals with a known preamble sequence and perform channel estimation using the result, obtaining a channel impulse response for the wireless signals. The wireless receiver system may filter the channel impulse response for the plurality of wireless signals by removing at least part of the channel impulse response due to the false wireless ranging signal while not removing at least part of the channel impulse response due to the true wireless ranging signal. The receiver system may perform a wireless ranging operation using the filtered channel impulse response. 1. An electronic device , comprising:an antenna configured to receive a first wireless signal from a first transmitting device, the first wireless signal having a first preamble and a cryptographically secure value, the cryptographically secure value being shared by the first transmitting device and the electronic device, and a second wireless signal from a second transmitting device, the second wireless signal having a second preamble that imitates at least part of the first preamble; and{'claim-text': ['filter at least part of the second wireless signal from the first wireless signal based at least in part on the cryptographically secure value of the first wireless signal,', 'determine a time-of-flight of the first wireless signal after filtering at least part of the second wireless signal, and', 'determine a first path correction using a channel estimation for the first wireless signal based on the time-of-flight.'], '#text': 'a receiver system coupled to the antenna and configured to'}2. The electronic device of ...

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Номер записи: 83
19-06-2014 дата публикации

Managing states of location determination

Номер: US20140171068A1
Автор: Lukas M. Marti, Robert Mayor, Shannon M. Ma
Принадлежит: Apple Inc

A mobile device can be in multiple states of location determination. In each state, the mobile device can use a distinct subsystem to determine a location. A state machine of the mobile device can manage the states, including determining which state the mobile device is in and whether a transition between the states has occurred. A transition can be triggered by a sensor of the mobile device and confirmed by another sensor of the mobile device. When the state machine detects a transition, the mobile device can switch location determination from one subsystem to another subsystem, and change a map user interface to one that is best suited for the new subsystem.

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Номер записи: 84
19-06-2014 дата публикации

Location determination using fingerprint data

Номер: US20140171114A1
Автор: Lukas M. Marti, Robert Mayor, Shannon M. Ma
Принадлежит: Apple Inc

Methods, program products, and systems for using a location fingerprint database to determine a location of a mobile device are described. A mobile device can use location fingerprint data received from a server to determine a location of the mobile device at the venue. The mobile device can obtain, from a sensor of the mobile device, a vector of sensor readings, each sensor reading can measure an environment variable, e.g., a signal received by the sensor from a signal source. The mobile device can perform a statistical match between the vector and the location fingerprint data. The mobile device can then estimate a current location of the mobile device based on the statistical match.

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Номер записи: 85
19-06-2014 дата публикации

Location fingerprinting

Номер: US20140171118A1
Автор: Lukas M. Marti, Robert Mayor, Shannon M. Ma
Принадлежит: Apple Inc

Methods, program products, and systems for using a location fingerprint database to determine a location of a mobile device are described. A mobile device can use a location fingerprint database to determine the location where GPS signals are unavailable. A server can generate location fingerprint data for the database. The server can generate the location fingerprint data using crowd sourcing, using known locations of signal sources, or both. The server can receive, from a sampling device, measurements of environment variables, e.g., signals from a signal source at one or more sampling points. The server can extrapolate, from the received measurements, estimated measurements at one or more locations in a venue. The server can store the extrapolated measurements as location fingerprint data. The server can send the location fingerprint data to a mobile device for determining a location of the mobile device when the mobile device is at the venue.

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Номер записи: 86
30-03-2017 дата публикации

POSITIONING DEVICE

Номер: US20170090009A1
Автор: AMISHIMA Takeshi, Wakayama Toshio
Принадлежит: Mitsubishi Electric Corporation

A configuration is provided, including a determination processor that determines, using the values TDOAand TDOAcalculated by an autocorrelation processor , whether the values TDOAcalculated by a cross-correlation processor are time differences of arrival resulting from direct waves emitted from a radio source, and a positioning processor that calculates the location of the radio source, using the values TDOAthat are determined by the determination processor as being time differences of arrival resulting from direct waves and selected from among the values TDOAcalculated by the cross-correlation processor 1. A positioning device comprising:a plurality of antennas including first and second antennas to receive signals in each of which a direct wave and a multipath wave interfere with each other, the direct wave and the multipath wave being emitted from a radio source;a first time-difference-of-arrival calculator to calculate time differences of arrival between signal waves being contained in the first and second received signals, based on a cross-correlation between a first received signal received by the first antenna and a second received signal received by the second antenna;a second time-difference-of-arrival calculator to calculate; a time difference of arrival between signal waves being contained in the first received signal, based on an autocorrelation of the first received signal and to calculate a time difference of arrival between signal waves being contained in the second received signal, based on an autocorrelation of the second received signal;a determiner to determine, using a difference between the time difference of arrival calculated based on the autocorrelation of the first received signal by the second time-difference-of-arrival calculator and the time difference of arrival calculated based on the autocorrelation of the second received signal by the second time-difference-or-arrival calculator, whether the time differences of arrival calculated by ...

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Номер записи: 87
25-03-2021 дата публикации

NETWORK ARCHITECTURE AND METHODS FOR LOCATION SERVICES

Номер: US20210092562A1
Автор: Markhovsky Felix, MARKHOVSKY Russ, Prevatt Truman, SHAW David Goodwin, SMITH Tyler Matthew
Принадлежит:

UE location determined by collecting and preprocessing signal data at a detector and sending extracted data to a remote locate server. The detector buffers samples from signals provided by receive channels, detects known reference signals from receive channels based on reference signal parameters, isolates symbols carrying the reference signal from frames, extracts data from symbols, and sends extracted data to locate server. The locate server receives the extracted data, estimates locate observables based on the extracted data and calculates the UE location based on the estimated locate observables, the reference signal parameters and the extracted data. The detector and/or the server may also generate correlation coefficients between reference signals carrying spectrum received from a serving cell and utilize the correlation coefficients to cancel a serving cell signal in symbols that include known in advance reference signals from the serving cell and one or more neighboring cells of the wireless system. 1. A method for processing data for determining a location of a wireless mobile device in a wireless system , the method comprising: buffering a plurality of samples in a digital format generated from signals provided by one or more receive channels;', 'receiving reference signal parameters that describe known in advance reference signals within the signals;', 'detecting the known in advance reference signals from each receive channel among the receive channels based on the reference signal parameters;', 'isolating symbols carrying each known in advance reference signal among the known in advance reference signals from one or more frames and/or subframes;', 'extracting resource elements or I/Q samples from the isolated symbols on a per symbol basis; and', 'sending the extracted resource elements or I/Q samples to a location physically remote from the detector where the location of the wireless mobile device may be determined based on estimated locate observables ...

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Номер записи: 88
25-03-2021 дата публикации

ELECTRONIC DEVICE FOR DETERMINING PATH OF LINE OF SIGHT (LoS) AND METHOD FOR THE SAME

Номер: US20210092703A1
Автор: Chiho Kim, Hyunkee MIN, Junghun Lee, Junsu CHOI, Taehun LIM
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An electronic device according to an embodiment includes an mmWave communication module and a processor. The processor is configured to receive a first signal transmitted by a first external electronic device, identify a distance of a transmission path of the first signal, transmit a second signal, receive a third signal obtained when the second signal is reflected, identify a distance of a transmission path of the second signal based on a difference between a transmission time of the second signal and a reception time of the third signal, and determine whether the transmission path of the first signal is a line of sight (LoS) path between the electronic device and the first external electronic device based on a difference between the distance of the transmission path of the first signal and the distance of the transmission path of the second signal. In addition, other embodiments are possible.

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Номер записи: 89
29-03-2018 дата публикации

System and Method for Determining a Location Area of a Mobile User

Номер: US20180091941A1
Автор: Bailly Patrick, Laurent Maxence, Taillard Eric, Versteeg Ernst
Принадлежит:

Methods and systems are provided for adaptively determining location of a mobile device. Antenna probabilities for a plurality of antennas in an area covered by a mobile radio network may be determined, with the antenna probabilities being determined based on expected field strengths for the plurality of antennas in each of a plurality of sub-areas of the area; and with the antenna probabilities indicate for each antenna, in each of the plurality of sub-areas, the probability that a mobile communication terminal uses that antenna when located in that sub-area. A location area for a user using a mobile communication terminal may then be determined based on the antenna probabilities and a determination of one or more antennas used by the mobile communication termination, wherein the location area is determined without measuring signal properties at the mobile communication terminal. 113-. (canceled)14. A method , comprising: the antenna probabilities are determined based on expected field strengths for the plurality of antennas in each of a plurality of sub-areas of the area; and', 'the antenna probabilities indicate for each antenna, in each of the plurality of sub-areas, the probability that a mobile communication terminal uses that antenna when located in that sub-area; and, 'determining antenna probabilities for a plurality of antennas in an area covered by a mobile radio network, whereindetermining a location area for a user using a mobile communication terminal based on the antenna probabilities and a determination of one or more antennas used by the mobile communication termination, wherein the location area is determined without measuring signal properties at the mobile communication terminal.15. The method of claim 14 , comprising determining location probabilities for the plurality of sub-areas claim 14 , wherein each location probability indicates a probability that a mobile communication terminal is located in a respective sub-area.16. The method of claim ...

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Номер записи: 90
05-04-2018 дата публикации

Single Burst Single Satellite Beacon Localization

Номер: US20180095156A1
Автор: Katz Daniel A.
Принадлежит:

A method and devices are disclosed, for localization of a radio beacon at a remote receiver in the framework of a satellite system. Such satellite system could be Cospas-Sarsat, for Search and Rescue of people, ships and aircraft in distress, and particularly its MEOSAR (Medium Earth Orbit Search and Rescue) segments: DASS/GPS, SAR/Galileo and SAR/Glonass; said beacon is typically one of a PLB (Personal Locator Beacon) or EPIRB (Emergency Position Indicating Radio Beacon) or ELT (Emergency Locator Beacon); and said remote receiver is typically a MEOLUT (Medium Earth Orbit Local User Terminal) base station. 1. A method for localization of a radio beacon at a remote receiver , via a first satellite payload and a second satellite payload , comprising the steps of:a. Configuring said first satellite payload to broadcast a first signal at a known epoch; Determine detection time of said first signal;', 'Transmit a second signal a predefined delay after said detection time;, 'b. Configuring said radio beacon toc. Configuring said second satellite payload to relay said second signal; Record detection time of said relayed second signal, and said known epoch;', 'Determine self-position, position of said first satellite payload and position of said second satellite payload;', 'Enable expressing the location coordinates of said beacon based on said time records, said predefined delay, and said determined positions., 'd. Configuring said remote receiver to2. The method according to claim 1 , further comprising the steps of:a. Configuring said first payload to periodically repeat said epoch and correspondingly said first signal transmissions at fixed time intervals;b. Configuring said radio beacon to dynamically select at least one of said first signals detection time after which said second signal is transmitted;c. Configuring said remote receiver to enable expressing the location coordinates of said beacon up to a certain ambiguity, even without knowing said dynamic selection.3 ...

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Номер записи: 91
01-04-2021 дата публикации

COMMUNICATION DEVICES AND METHODS FOR RF-BASED COMMUNICATION AND POSITION DETERMINATION

Номер: US20210099989A1
Автор: CIOCHINA Dana, Eitel Ben, FELLHAUER Felix, HANDTE Thomas, Loghin Nabil Sven, Schneider Daniel
Принадлежит: SONY CORPORATION

Communication devices and corresponding methods for RF-based communication and position determination are disclosed. An initiator communication device () comprises an antenna unit () configured to transmit and receive RF signals, a beamforming unit () configured to perform beamforming and to control the antenna unit to transmit and/or receive RF signals using one or more selected beams, a control unit () configured to control the beamforming unit () in a training phase to perform beamforming for determining an initiator line of sight, LOS, beam to a responder communication device (), and a processing unit () configured to determine the initiator LOS beam and/or initiator angular information of the initiator LOS beam and to determine the position of said communication device using the determined initiator LOS beam and/or initiator angular information in a measurement phase. 1. (canceled)2. A communication device for RF-based communication , said communication device comprising:an antenna configured to transmit and receive RF signals, andcircuitry configured toperform beamforming and control the antenna to transmit and/or receive RF signals using one or more selected beams,perform signaling, using the antenna, to initiate a training phase, andin the training phase, perform beamforming for determining an antenna wave vector (AWV) of a line of sight (LOS) path to a responder communication device.3. The communication device as claimed in claim 2 , wherein the circuitry is configured to determine an angle of arrival and/or an angle of departure of the LOS path as angular information.4. The communication device as claimed in claim 2 , wherein the circuitry is configured to determine the AWV of the LOS path by evaluating a time of flight of RF signals transmitted to the responder communication device.5. The communication device as claimed in claim 4 , wherein the circuitry is configured to determine the AWV of the LOS path by determining the beam resulting in the minimum ...

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Номер записи: 92
28-03-2019 дата публикации

Secure Channel Estimation Architecture

Номер: US20190098507A1
Автор: Chen Xu, Marquez Alejandro J., Narang Mohit, Sen Indranil S., Yang Shang-Te
Принадлежит:

Wireless communication between two electronic devices may be used to determine a distance between the two devices, even in the presence of an otherwise-disruptive attacker. A wireless receiver system of one device may receive a true wireless ranging signal from a first transmitting device and a false wireless ranging signal from an attacker. The wireless receiver system may correlate the wireless signals with a known preamble sequence and perform channel estimation using the result, obtaining a channel impulse response for the wireless signals. The wireless receiver system may filter the channel impulse response for the plurality of wireless signals by removing at least part of the channel impulse response due to the false wireless ranging signal while not removing at least part of the channel impulse response due to the true wireless ranging signal. The receiver system may perform a wireless ranging operation using the filtered channel impulse response. 1. An electronic device comprising communication circuitry , wherein the communication circuitry comprises: from a first transmitting device, a first wireless signal via a free-space path between the electronic device and the first transmitting device, wherein the first wireless signal comprises a first preamble and a shared secret, wherein the shared secret is shared by the first transmitting device and the electronic device; and', 'from a second transmitting device, a second wireless signal comprising a second preamble that imitates at least part of the first preamble of the first wireless signal; and, 'an antenna configured to receive a plurality of wireless signals at least partly overlapping in time, wherein the plurality of wireless signals comprises receive the plurality of wireless signals;', 'filter out at least part of the second wireless signal from the plurality of wireless signals based at least in part on the shared secret of the first wireless signal; and', 'determine a time-of-flight of the first ...

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Номер записи: 93
12-04-2018 дата публикации

Locating devices based on antenna coordinates

Номер: US20180100916A1
Автор: Jeff Gullicksen
Принадлежит: Reavire Inc

A technique for locating devices detects wireless packets using multiple antenna units and generates antenna coordinates in an antenna coordinate system on a per-packet basis. Information about antenna coordinates are stored in entries of a data store. Packets originating from different locations produce different antenna coordinates, enabling antenna coordinates to differentiate regions in physical space. Although antenna coordinates do not directly describe physical locations, they are stable over time given a stable environment and thus allow determination as to whether a location has been visited before. Entries in the data store may store Cartesian (physical) coordinates associated with respective antenna coordinates, enabling real-time tracking of physical device locations by lookups into the data store based on antenna coordinates.

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Номер записи: 94
26-03-2020 дата публикации

METHODS AND APPARATUS FOR LOCATING RFID TAGS

Номер: US20200096599A1
Автор: Adlin Tamara, Blair Adam, Hewett Spencer, MURPHY MICHAEL, Seiff Ken, Wieman Mark
Принадлежит:

A radio frequency identification (RFID) system includes an array of antennas to distinguish line-of-sight (LOS) paths from non-line-of-sight (NLOS) paths. The distance between adjacent antennas in the array of antennas is less than half the wavelength of the radio frequency (RF) signal of the system. Each antenna in the antenna array is also digitally controlled to change relative phase difference among the antennas, thereby allowing digital steering of the array of antennas across angles of arrival (AOAs) between 0 and π. The digital steering generates a plot of signal amplitudes as a function of AOAs. LOS paths are distinguished from NLOS paths based on the shapes (e.g., depth, gradient, etc.) of local extremes (e.g., maxima or minima) in the plot. 1. A method of locating radio-frequency identification (RFID) tags , the method comprising:receiving, from a first RFID tag at a first unknown location, a plurality of first RFID signals;designating, based on the plurality of first RFID signals, the first RFID tag as a first virtual reference tag;receiving, from a second RFID tag at a second unknown location, at least one second RFID signal; anddetermining, based on the at least one second RFID signal, a position of the first RFID tag with respect to the first virtual reference tag.2. The method of claim 1 , wherein receiving the plurality of first RFID signals comprises receiving at least one first RFID signal from each of a plurality of angles of arrival.3. The method of claim 2 , wherein:receiving the at least one second RFID signal comprises receiving the at least one second RFID signal from a first angle of arrival in the plurality of angles of arrival, anddetermining the position of the first RFID tag comprises comparing a signature of the first RFID tag from the first angle of arrival to a signature of the first virtual reference tag at the first angle of arrival.4. The method of claim 1 , wherein designating the first RFID tag as the first virtual reference RFID ...

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Номер записи: 95
21-04-2016 дата публикации

TIME OF ARRIVAL INFORMATION PASSING IN A DISTRIBUTED ANTENNA SYSTEM

Номер: US20160109555A1
Автор: Golubovic Boris, Uyehara Lance K.
Принадлежит:

Embodiments described herein provide for a method for obtaining location information regarding a wireless unit in a distributed antenna system (DAS). The method includes identifying a first time of arrival of a wireless signal in a time and frequency unit at a first active antenna unit (AAU). A second time of arrival of the wireless signal in the time and frequency unit at a second AAU is also identified. A location of a wireless unit transmitting the wireless signal is estimated based on a location of the first AAU, a location of the second AAU, and a difference between the first time of arrival and the second time of arrival. The location of the wireless unit and an indication that the location corresponds to the time and frequency unit is sent to a baseband unit or serving mobile location center (SMLC). 1. A method for obtaining location information regarding a wireless unit in a distributed antenna system (DAS) , the method comprising:identifying a first time of arrival of a wireless signal in a time and frequency unit at a first active antenna unit (AAU);identifying a second time of arrival of the wireless signal in the time and frequency unit at a second AAU;estimating a location of a wireless unit transmitting the wireless signal based on a location of the first AAU, a location of the second AAU, and a difference between the first time of arrival and the second time of arrival; andsending to a baseband unit or serving mobile location center (SMLC), the location of the wireless unit and an indication that the location corresponds to the time and frequency unit.2. The method of claim 1 , comprising:identifying a third time of arrival of the wireless signal in the time and frequency unit at a third AAU,wherein estimating a location includes estimating a location based on a location of the third AAU and a difference between the third time of arrival, the first time of arrival, and the second time of arrival.3. The method of claim 1 , wherein the time and ...

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Номер записи: 96
02-06-2022 дата публикации

SYSTEMS AND METHODS FOR OBJECT LOCALIZATION AND PATH IDENTIFICATION BASED ON RFID SENSING

Номер: US20220171051A1
Автор: Cristache Lucian
Принадлежит: Lucomm Technologies, Inc.

A monitoring system includes a first sensor and a second sensor, at least one of which is a camera. A computer system coupled to the first and second sensors includes a memory and stored object types and associations between objects of the object types. The computer system is configured to infer a first association between a first and second object by retrieving an input from at least one of the sensors, determining the object types of the first and second objects and inferring a specific interaction at a monitored location based on the sensor inputs. 1. A monitoring system comprising:a first sensor;a second sensor, at least one of the first sensor or the second sensor being a camera;a computer system coupled with the first sensor and the second sensor;a memory associated with the computer system, the memory storing a first object type and a second object type, at least one specific interaction, and a plurality of associations between the first object type and the second object type; receiving an input from at least one of the first sensor or the second sensor;', 'determining that the first object is of the first object type and that the second object is of the second object type based on the received sensor inputs;', 'inferring, based on a monitored location at a first time and further based on the received sensor inputs, the at least one specific interaction between the first object of the first object type and the second object of the second object type; and, 'the computer system being configured to infer a first association from among the plurality of associations between a first object of the first object type and a second object of a second object type byinferring the first association between the first object and the second object from among the plurality of associations, based on the determined first object type, the second object type, and the inferred specific interaction.2. The monitoring system of claim 1 , wherein the first association between the first ...

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Номер записи: 97
26-03-2020 дата публикации

ANGLE OF ARRIVAL (AOA) POSITIONING METHOD AND SYSTEM FOR POSITIONAL FINDING AND TRACKING OBJECTS USING REDUCED ATTENUATION RF TECHNOLOGY

Номер: US20200100059A1
Автор: BUYNAK Michael John, Prevatt Truman
Принадлежит:

Systems and methods for determining user equipment (UE) locations within a wireless network using reference signals of the wireless network are described. The disclosed systems and methods utilize a plurality of in-phase and quadrature (I/Q) samples generated from signals provided by receive channels associated with two or more antennas of the wireless system. Based on received reference signal parameters the reference signal within the signals from each receive channel among the receive channels is identified. Based on the identified reference signal from each receive channel, an angle of arrival between a baseline of the two or more antennas and incident energy from the UE to the two or more antennas is determined. That angle of arrival is then used to calculate the location of the UE. The angle of arrival may be a horizontal angle of arrival and/or a vertical angle of arrival 1. A method for determining an elevation of a user equipment (UE) in communication with a wireless system , the method comprising:buffering a plurality of in-phase and quadrature (I/Q) samples generated from signals provided by receive channels associated with at least two antennas or four or more omnidirectional antennas, wherein a first antenna among the at least two antennas or the four or more omnidirectional antennas is displaced in a vertical direction with respect to a second antenna among the at least two antennas or other antennas among the four or more omnidirectional antennas;identifying the signals from each receive channel among the receive channels as previously known signals based on the buffered I/Q samples;based on the previously known signals from each receive channel determining an angle of arrival between a baseline of the at least two antennas or the four or more omnidirectional antennas and incident energy from the UE to at least two antennas or the four or more omnidirectional antennas, wherein determining the angle of arrival includes determining a sub-sample ...

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Номер записи: 98
04-04-2019 дата публикации

Estimating Locations of Mobile Devices in a Wireless Tracking System

Номер: US20190104493A1
Автор: Hedley Mark, Li Shenghong
Принадлежит: Commonwealth Scientific and Industrial Research Organisation

A wireless tracking system comprises mobile devices and stationary devices at known locations. The system receives a first radio measurement indicative of a first propagation path length and receives sensor data indicative of the movement of the first mobile device. The sensor data is of a type different to the radio measurement. The system then determines a historical location of the first mobile device based on the first radio measurement and the sensor data and determines error data indicative of a difference between a historical radio measurement and the historical location and stores the error data associated with the historical location. The system can then receive a second radio measurement indicative of a second propagation path length of radio frequency radiation and determine an estimated location of the second mobile device based on the second radio measurement and the stored error data. 1. A method for determining an estimated location of a mobile device in a wireless tracking system , the wireless tracking system comprising a first mobile device , a second mobile device and multiple stationary devices at known locations , receiving a first radio measurement indicative of a first propagation path length of radio frequency radiation between the first mobile device and the multiple stationary devices;', 'receiving sensor data indicative of the movement of the first mobile device, wherein the sensor data is of a type different to the radio measurement;', 'determining a historical location of the first mobile device based on the first radio measurement and the sensor data;', 'determining error data indicative of a difference between a historical radio measurement associated with the historical location and the historical location;', 'storing the error data associated with the historical location on a data store;', 'receiving a second radio measurement indicative of a second propagation path length of radio frequency radiation between a second mobile device ...

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Номер записи: 99
02-06-2022 дата публикации

Filtering Channel Responses for Motion Detection

Номер: US20220173939A1
Автор: OMER Mohammad, Zakharov Mikhail Alexand
Принадлежит: Cognitive Systems Corp.

In a general aspect, a set of observed frequency-domain channel responses is filtered to remove noise or distortions that are not related to changes in the physical environment. In some aspects, for each frequency-domain channel response, a time-domain channel response is generated based on the frequency-domain channel response; and a filtered time-domain channel response is generated based on a constraint applied to the time-domain channel response. Additionally, a reconstructed frequency-domain channel response is generated based on the filtered time-domain channel response. An error signal is also generated, and a determination is made as to whether the error signal satisfies a criterion. The error signal can be indicative of a difference between the frequency-domain channel response and the reconstructed frequency-domain channel response. In response to each of the error signals satisfying the criterion, motion of an object in a space is detected based on the set of frequency-domain channel responses. 130.-. (canceled)31. A method comprising:obtaining a frequency-domain channel response based on a wireless signal transmitted through a space;generating a time-domain channel response based on the frequency-domain channel response;generating a filtered time-domain channel response based on a constraint applied to the time-domain channel response;generating a reconstructed frequency-domain channel response based on the filtered time-domain channel response; anddetermining a state of the space based on the reconstructed frequency-domain channel responses.32. The method of claim 31 , wherein the time-domain channel response comprises a plurality of time domain pulses with each time domain pulse comprising an amplitude coefficient and a pulse time.33. The method of claim 32 , wherein the constraint comprises a constraint on the pulse time of each of the plurality of time domain pulses in the time-domain channel response.34. The method of claim 32 , wherein the ...

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Номер записи: 100