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公开(公告)号：US12061274B2
公开(公告)日：2024-08-13
申请号：US18324276
申请日：2023-05-26
Applicant: Texas Instruments Incorporated
Inventor： Tomas Motos
CPC classification number: G01S19/256 , G01S19/35 , H04W4/80
Abstract: A circuit includes a first wireless radio frequency (RF) transceiver and a time-of-flight estimator included with or coupled to the first wireless RF transceiver. The time-of-flight estimator estimates a time-of-flight between the first wireless RF transceiver and a second wireless RF transceiver using: a first interval value that indicates an amount of time between when the second wireless RF transceiver received the message and when the second wireless RF transceiver transmitted the response; a first error value that indicates an offset between when the second wireless RF transceiver sampled the message and a target sampling point for the message; a second interval value that indicates an amount of time between when the TX chain sent the message and when the RX chain received the response; and a second error value that indicates an offset between when the RX chain sampled the response and a target sampling point for the response.
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公开(公告)号：US20240183993A1
公开(公告)日：2024-06-06
申请号：US18538650
申请日：2023-12-13
Applicant: Higher Ground LLC
Inventor： Robert S. Reis , Shmuel Shaffer , Darren Robert Reis , James M. Behmke , David Alexander Reuss
IPC: G01S19/21 , G01S5/14 , G01S19/11 , G01S19/25 , G01S19/37 , G01S19/42 , G01S19/45 , G01S19/51 , H04B7/185 , H04W4/02 , H04W4/021 , H04W4/029 , H04W12/122 , H04W64/00
CPC classification number: G01S19/21 , G01S19/215 , G01S19/421 , G01S5/14 , G01S19/115 , G01S19/256 , G01S19/258 , G01S19/37 , G01S19/45 , G01S19/51 , H04B7/18513 , H04W4/021 , H04W4/023 , H04W4/029 , H04W12/122 , H04W64/00
Abstract: Satellite relaying for geolocation and mitigation of GNSS denial are provided, where a method comprises: receiving, by a processing device from a communication satellite along a communication path, a message initiated at a transmission time by a transmitting device, the communication path having a target device with an unknown distance to the communication satellite; determining, by the device, a reception time upon receiving the message; determining, by the device, a time of travel of the message associated with only traversal of a portion of the communication that is path between the communication satellite and the target device based on a difference between the transmission time and the reception time; calculating, by the device, a distance between the communication satellite and the target device based on the time of travel; and performing, by the device, one or more actions based on the distance between the communication satellite and the target device.
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公开(公告)号：US11971490B2
公开(公告)日：2024-04-30
申请号：US17186611
申请日：2021-02-26
Applicant: Higher Ground LLC
Inventor： Robert S. Reis , Shmuel Shaffer , Darren Robert Reis , James M. Behmke , David Alexander Reuss
IPC: G01S19/21 , G01S19/42 , G01S5/14 , G01S19/11 , G01S19/25 , G01S19/37 , G01S19/45 , G01S19/51 , H04B7/185 , H04W4/02 , H04W4/021 , H04W4/029 , H04W12/122 , H04W64/00
CPC classification number: G01S19/21 , G01S19/215 , G01S19/421 , G01S5/14 , G01S19/115 , G01S19/256 , G01S19/258 , G01S19/37 , G01S19/45 , G01S19/51 , H04B7/18513 , H04W4/021 , H04W4/023 , H04W4/029 , H04W12/122 , H04W64/00
Abstract: According to one or more of the embodiments herein, systems and techniques for multi-system-based detection and mitigation of Global Navigation Satellite System (GNSS) spoofing are provided. In one embodiment, a method comprises: obtaining a first location of an object from a primary location determination hardware system; obtaining a second location of the object from a secondary location determination hardware system; determining a distance difference between the first location and the second location; determining whether the distance difference between the first location and the second location is acceptable based on a threshold distance; and initiating one or more mitigation actions in response to the distance difference between the first location and the second location being unacceptable.
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4.发明授权公开(公告)号：US11963488B2
公开(公告)日：2024-04-23
申请号：US17646731
申请日：2022-01-03
Applicant: Tata Consultancy Services Limited
Inventor： Ankur Pandit , Jayantrao Mohite , Suryakant Ashok Sawant , Srinivasu Pappula
CPC classification number: A01G25/167 , G01N33/246 , G01S19/14 , G01S19/256 , G01S19/26
Abstract: This disclosure relates generally to root zone moisture estimation for vegetation cover using remote sensing. Conventionally, it is challenging to estimate root zone soil moisture using only satellite data. Moreover, estimation of soil moisture under vegetation cover based on bare surface soil moisture and vegetation parameters is not available. The disclosed method and system facilitate estimation of an ensemble of soil moisture under vegetation cover and root zone soil moisture using process based soil water balance for spatial estimation of root zone soil moisture. The system estimates bare surface soil moisture for different soil types/textures using the baseline bare surface model and soil properties derived from satellite data and in-situ sensors. The method further provides temporal spatially distributed soil moisture inputs to an intelligent irrigation management/information system which is very important to reduce and regulate water consumption.
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公开(公告)号：US20240085565A1
公开(公告)日：2024-03-14
申请号：US18048636
申请日：2022-10-21
Applicant: Honeywell International Inc.
Inventor： Perumal Kumar , Sanjay Lenka
CPC classification number: G01S19/015 , G01S19/02 , G01S19/256
Abstract: A method for detecting spoofing comprises monitoring GNSS satellite signals with a GNSS receiver; obtaining current time, current orbital information values, Doppler shift, and/or dilution of precision from the GNSS receiver, with the current orbital information values comprising orbital position with respect to a current position of the GNSS receiver; retrieving past orbital information values comprising orbital position, and calculating predicted orbital information values based on the past orbital information values, with respect to the current time from the receiver, with the predicted orbital information values comprising orbital position with respect to the current position of the receiver. The method compares the predicted orbital information values, Doppler shift, and/or dilution of precision, with the current orbital information values to obtain discriminator values; determines whether the discriminator values are greater than threshold levels; and outputs a spoofing alert signal when the discriminator values are greater than the threshold levels.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240027631A1
公开(公告)日：2024-01-25
申请号：US18220688
申请日：2023-07-11
Applicant: GTS FRANCE SAS
Inventor： Marc REVOL
CPC classification number: G01S19/50 , G01S19/40 , G01S19/256 , B61L25/025 , B61L2205/04
Abstract: A method for checking the integrity of the point positioning process obtained by determining the closest position, based on the adapted filtering of received GNSS signals, of a set of georeferenced reference positions for implementation on a mobile or fixed carrier, the method making it possible to check that the correlation function of the received GNSS signals is consistent with the selected reference position. The method for checking the integrity of the nearest location comprises: a first step for pre-selecting satellite signals suitable for the position integrity test, based on the minimum signal-to-noise ratio of the point correlation channel, a second step to exclude satellite signals that are not compatible with the predicted code phases, based on the absence of a Maximum At Center (MAC) of the early-punctual-late correlation points and meeting the non-integrity, non-continuity and alarm delay risks required for positioning system security, at least one maximum likelihood search step on the set of reference positions obtained by cumulating the elementary powers of the various selected satellites.
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公开(公告)号：US11846713B2
公开(公告)日：2023-12-19
申请号：US16964033
申请日：2019-01-17
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： François-Xavier Marmet
CPC classification number: G01S19/243 , G01S19/252 , G01S19/254 , G01S19/256
Abstract: A Global Navigation Satellite System (GNSS) positioning techniques is provided. A method to improve the time required to compute a position measurement in a GNSS receiver, and the time required to make this position measurement accurate is also provided. The method comprises computing a snapshot PVT (Position Velocity and Time) measurement, and use it to reduce the time required to acquire new signals to compute a conventional PVT measurement. A receiver implementing the method is further provided.
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公开(公告)号：US11841443B2
公开(公告)日：2023-12-12
申请号：US17653987
申请日：2022-03-08
Applicant: Microchip Technology Incorporated
Inventor： George Zampetti
CPC classification number: G01S19/256 , G01S19/23 , G01S19/396
Abstract: Common view time transfer and related apparatuses and methods are disclosed. An apparatus includes a receiver oscillator to provide a local clock signal and one or more processors. The one or more processors are to perform, at least partially based on the local clock signal, event time tagging pre-processing at least partially responsive to satellite signals received from one or more satellites to generate a decimated precision correction state estimate; determine, per satellite signal pseudo range residuals; determine a navigation engine clock state; perform a precision clock state pre-processing operation at least partially responsive to the navigation engine clock state and the decimated precision correction state estimate to generate a precision navigation clock state; and generate a common view real time report at least partially responsive to the per satellite signal pseudo range residuals and the precision navigation clock state.
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公开(公告)号：US11812510B2
公开(公告)日：2023-11-07
申请号：US18106710
申请日：2023-02-07
Applicant: David E. Newman , R. Kemp Massengill
Inventor： David E. Newman , R. Kemp Massengill
IPC: H04W8/26 , G06K19/06 , H04W4/029 , H04W4/90 , H04W4/40 , G01S5/00 , G01S19/25 , H04W4/46 , G08G1/01 , G08G1/017 , G08G1/04 , G08G1/056 , G08G1/09 , G08G1/137 , G08G1/16
CPC classification number: H04W8/26 , G01S5/0063 , G01S19/256 , G06K19/06037 , G08G1/017 , G08G1/0145 , G08G1/04 , G08G1/056 , G08G1/091 , G08G1/137 , G08G1/161 , G08G1/162 , G08G1/166 , G08G1/167 , H04W4/029 , H04W4/40 , H04W4/46 , H04W4/90
Abstract: Vehicles in traffic cannot coordinate their actions properly in 5G and 6G without knowing the location and the wireless address of the other vehicle. GNSS signals are generally too slow and too imprecise to discern vehicles in, for example, adjacent lanes. Directional wireless beams are subject to reflections from conducting surfaces, producing chaotic signals and false locations if more than one vehicle is within the transmission beam. To provide precise localization in traffic, methods are disclosed for multiple vehicles (or other mobile devices) to acquire satellite signals simultaneously, and then analyze the data differentially, thereby canceling major uncertainties (such as propagation variations, ephemeris motion, and clock jitter), and thereby determining the relative positions precisely. Unlike prior-art “precision” positioning methods, the disclosed methods do not require averaging multiple acquisitions. On the contrary, examples show how high differential precision can be obtained without averaging, using measurements acquired at the predetermined time.
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公开(公告)号：US20230341559A1
公开(公告)日：2023-10-26
申请号：US17816032
申请日：2022-07-29
Applicant: Tribalco LLC
Inventor： Jeffrey K. Sapp , Jason B. Sapp
CPC classification number: G01S19/015 , G01S19/256
Abstract: The present disclosure describes systems and methods for secure communication over multiple secure paths through an intelligent and dynamic gateway capable of receiving and processing communications received from multiple paths, protocols, physical spectrums, or sources and processing such inputs using software (e.g., middleware or one or more virtual machines (VMs)) to generate wide area network (WAN) output that can, in turn, be transmitted to multiple paths, irrespective of protocol, physical spectrum, or destinations. As such, the current gateway can be configured to be agnostic to the nature of input or output technologies and manage the conversion of data for ubiquitous telecommunications management.
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