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.

IPC: G01S19/21 ,  H04B7/08

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.

公开(公告)号：US20210088629A1

公开(公告)日：2021-03-25

申请号：US17025424

申请日：2020-09-18

Applicant: Raytheon Company

Inventor： Edward M. Jackson ,  Phuoc T. Ho ,  Hooman Kazemi

IPC: G01S7/41 ,  G01S13/00

Abstract: In one aspect, a method includes receiving signals directly or indirectly from a transmitter. The received signals include a target signal, a clutter signal and a reference signal. The method also includes filtering the clutter signal from the received signals, processing the filtered radar data to obtain range and Doppler data, detecting and tracking a target from the range and Doppler data and classifying the target.

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

IPC: G01S19/21 ,  H04B7/08 ,  H04K3/00

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.

公开(公告)号：US11063563B1

公开(公告)日：2021-07-13

申请号：US16928343

申请日：2020-07-14

Applicant: Raytheon Company

Inventor： Edward M. Jackson ,  Phuoc T. Ho ,  David Wilson

IPC: H03F3/24 ,  H04L27/36 ,  H03F1/02

Abstract: An emitter identification system arranged to: receive a detected signal including one or more emitter signals from one or more emitters respectively where each of the emitter signals includes a unique signal characteristic related to a unique physical feature of a hardware structure associated with each of the emitters; apply a modulation signal to the detected signal to generate pulse in-phase and quadrature (IQ) data associated with the one or more emitter signals; extract one or more amplitude envelopes associated with the one or more emitter signals, where each amplitude envelope is related to the unique signal characteristic associated with each of the one or more emitters; estimate the unique signal characteristic of each of the one or more emitter signals; estimate a number of clusters related to a number of emitter signals; and identify each of the emitters by applying an unsupervised learning function.