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Patent Agency Ranking
公开(公告)号：US20230194728A1
公开(公告)日：2023-06-22
申请号：US17645505
申请日：2021-12-22
Applicant: Raytheon Company
Inventor： Gennady Y. Poberezhskiy , Edward M. Jackson , Brian R. Gonzales , Jarrett M. Perry , William K. Wallace , Paul H. Grobert , Matthew P. Salkin, SR.
CPC classification number: G01S19/21 , H04B7/0842
Abstract: A method and apparatus for providing a standalone anti-jamming (AJ) nuller-beamformer. Signals from an antenna array include a sum of Global Navigation Satellite System (GNSS) signals and jamming signals from a plurality of spatial sources. A front end is configured to amplify, filter, down-convert, and sample the input signals which are then filtered, downconverted, and decimated prior to frequency-domain and time-domain partitioning. Weights are computed and applied for spatial nulling of jamming signals in each frequency bin for the partitioned signals. Frequency and time-domain reconstruction generates a reconstructed signal with suppressed jamming.
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公开(公告)号：US10739466B2
公开(公告)日：2020-08-11
申请号：US15040900
申请日：2016-02-10
Applicant: Raytheon Company
Inventor： Paul H. Grobert
Abstract: A technology is described for mitigating global positioning system (GPS) spoofer signals. A potentially spoofed GPS signal received via an antenna coupled to a GPS receiver can be identified. The potentially spoofed GPS signal can be applied to a spoofer signal nulling loop to generate a set of spoofer nulling weights. The set of spoofer nulling weights can produce a direction vector associated with the potentially spoofed GPS signal. The direction vector can be compared to a beamsteering vector. The potentially spoofed GPS signal can be determined as being a spoofer GPS signal when a misalignment between the direction vector and the beamsteering vector is above a defined threshold. The spoofer GPS signal can be converted to a spoofer mitigation signal that is applied to satellite track channels of the GPS receiver. The spoofer mitigation signal can produce a spatial null in a direction of the spoofer GPS signal.
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公开(公告)号：US20180231632A1
公开(公告)日：2018-08-16
申请号：US15433479
申请日：2017-02-15
Applicant: Raytheon Company
Inventor： Stanley I. Tsunoda , Paul H. Grobert , Phuoc T. Ho
CPC classification number: G01S5/0263 , G01S3/48 , G01S5/0081 , G01S5/02 , G01S5/0221 , G01S5/0268 , G01S5/04 , G01S5/06 , G01S19/41
Abstract: A system for multi-ship geolocation of a signal emitter of interest uses differential GPS (DGPS) to determine the relative positions of two or more receivers in order to determine baseline vectors between them. The geolocation of the signal emitter is then determined as a function of the baseline vectors. The use of DGPS allows for more efficient and useful geometries between the receivers as two receivers can both be in a mainlobe of an emitted signal and still provide increased geolocation accuracy.
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公开(公告)号：US12135378B2
公开(公告)日：2024-11-05
申请号：US17645505
申请日：2021-12-22
Applicant: Raytheon Company
Inventor： Gennady Y. Poberezhskiy , Edward M. Jackson , Brian R. Gonzales , Jarrett M. Perry , William K. Wallace , Paul H. Grobert , Matthew P. Salkin
Abstract: A method and apparatus for providing a standalone anti jamming (AJ) nuller-beamformer. Signals from an antenna array include a sum of Global Navigation Satellite System (GNSS) signals and jamming signals from a plurality of spatial sources. A front end is configured to amplify, filter, down-convert, and sample the input signals which are then filtered, down-converted, and decimated prior to frequency-domain and time-domain partitioning. Weights are computed and applied for spatial nulling of jamming signals in each frequency bin for the partitioned signals. Frequency and time-domain reconstruction generates a reconstructed signal with suppressed jamming.
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公开(公告)号：US20170227650A1
公开(公告)日：2017-08-10
申请号：US15040900
申请日：2016-02-10
Applicant: Raytheon Company
Inventor： Paul H. Grobert
IPC: G01S19/21
Abstract: A technology is described for mitigating global positioning system (GPS) spoofer signals. A potentially spoofed GPS signal received via an antenna coupled to a GPS receiver can be identified. The potentially spoofed GPS signal can be applied to a spoofer signal nulling loop to generate a set of spoofer nulling weights. The set of spoofer nulling weights can produce a direction vector associated with the potentially spoofed GPS signal. The direction vector can be compared to a beamsteering vector. The potentially spoofed GPS signal can be determined as being a spoofer GPS signal when a misalignment between the direction vector and the beamsteering vector is above a defined threshold. The spoofer GPS signal can be converted to a spoofer mitigation signal that is applied to satellite track channels of the GPS receiver. The spoofer mitigation signal can produce a spatial null in a direction of the spoofer GPS signal.
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