公开(公告)号：US12184409B1

公开(公告)日：2024-12-31

申请号：US18345023

申请日：2023-06-30

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： Michael H. Stockmaster ,  Ying Cho J. Lai

IPC: H04K3/00 ,  H01Q3/26 ,  H04B7/0426

Abstract: Techniques are provided for jammer detection. A methodology implementing the techniques according to an embodiment includes steering a beam in a specified direction to generate a power measurement, the specified direction selected from a plurality of directions, such that the method comprises scanning through the plurality of directions. The method also includes adaptively steering a null in the specified direction and measuring a gain of the received signal in the null direction. The method further includes calculating a difference between the power measurement and the measured gain and generating a difference-based detection that the received signal is associated with a jammer at the specified direction. The difference-based detection is based on a comparison of the power difference to a power difference threshold value. The power difference threshold value is based on a desired probability of false alarm and probability of detection, and/or desired angular resolution.

公开(公告)号：US20240171300A1

公开(公告)日：2024-05-23

申请号：US17991435

申请日：2022-11-21

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： Michael H. Stockmaster ,  Ying Cho J. Lai ,  Aaron P. Shaffer ,  Ryan D. Downey

IPC: H04K3/00 ,  G01S3/04 ,  G06N3/08

CPC classification number: H04K3/822 ,  G01S3/043 ,  G06N3/08 ,  H04K3/88 ,  G01S7/021

Abstract: Techniques are provided for jammer detection. A methodology implementing the techniques according to an embodiment includes estimating an angle of arrival of a jamming signal, the jamming signal included in a received signal, and generating a direction finding (DF) confidence indicator associated with the estimated angle of arrival. The method also includes extracting the jamming signal from the received signal. The method further includes correlating the extracted jamming signal with previously extracted jamming signals to generate a correlation score and using the correlation score as a uniqueness assessment of the extracted jamming signal. The method further includes identifying characteristics of the extracted jamming signal and generating a characterization confidence indicator. The method further includes demoting the extracted jamming signal to non-jammer status based on one or more of the DF confidence indicator, the uniqueness assessment, and the characterization confidence indicator.

公开(公告)号：US20250007640A1

公开(公告)日：2025-01-02

申请号：US18345023

申请日：2023-06-30

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： Michael H. Stockmaster ,  Ying Cho J. Lai

IPC: H04K3/00 ,  H01Q3/26 ,  H04B7/0426

Abstract: Techniques are provided for jammer detection. A methodology implementing the techniques according to an embodiment includes steering a beam in a specified direction to generate a power measurement, the specified direction selected from a plurality of directions, such that the method comprises scanning through the plurality of directions. The method also includes adaptively steering a null in the specified direction and measuring a gain of the received signal in the null direction. The method further includes calculating a difference between the power measurement and the measured gain and generating a difference-based detection that the received signal is associated with a jammer at the specified direction. The difference-based detection is based on a comparison of the power difference to a power difference threshold value. The power difference threshold value is based on a desired probability of false alarm and probability of detection, and/or desired angular resolution.

公开(公告)号：US12040888B2

公开(公告)日：2024-07-16

申请号：US17991435

申请日：2022-11-21

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： Michael H. Stockmaster ,  Ying Cho J. Lai ,  Aaron P. Shaffer ,  Ryan D. Downey

IPC: H04K3/00 ,  G01S3/04 ,  G01S7/02 ,  G06N3/08

CPC classification number: H04K3/822 ,  G01S3/043 ,  G06N3/08 ,  H04K3/88 ,  G01S7/021

Abstract: Techniques are provided for jammer detection. A methodology implementing the techniques according to an embodiment includes estimating an angle of arrival of a jamming signal, the jamming signal included in a received signal, and generating a direction finding (DF) confidence indicator associated with the estimated angle of arrival. The method also includes extracting the jamming signal from the received signal. The method further includes correlating the extracted jamming signal with previously extracted jamming signals to generate a correlation score and using the correlation score as a uniqueness assessment of the extracted jamming signal. The method further includes identifying characteristics of the extracted jamming signal and generating a characterization confidence indicator. The method further includes demoting the extracted jamming signal to non-jammer status based on one or more of the DF confidence indicator, the uniqueness assessment, and the characterization confidence indicator.