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A Beam-Doppler Channel Adaptive Selection Stap Method

An adaptive selection, Doppler channel technology, applied in the field of beam-Doppler channel adaptive selection of STA, can solve the problems of clutter suppression and target detection performance degradation, to overcome performance degradation, improve performance, suppress clutter wave effect

Active Publication Date: 2020-01-17
SHENZHEN UNIV
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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a beam-Doppler channel adaptive selection STAP method, aiming to solve the beam-Doppler channel fixed in the existing beam-Doppler STAP technology, caused by the array error The problem of clutter suppression and target detection performance degradation caused by practical factors such as

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[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] The present invention is used in the field of radar signal processing, and provides a beam-Doppler channel adaptive selection STAP (space-time adaptive processing) method based on sparse constraints, which converts array-pulse dimension sampling into For beam-Doppler domain data, the space-time filter weight vector design problem is transformed into a sparse representation problem by introducing sparse constraints, and then the filter weight vector is obtained by solving the sparse representation problem and the target detector is designed. Finally, clutter suppression and target detection a...

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Abstract

A method of adaptively selecting STAP methods utilizing a beam-Doppler channel comprises a data transform step (S1), a filter design step (S2), and a target detection step (S3). The method can be employed to implement a filter design by exploiting sparse adaptive selection of beam-doppler channels, and using finite filter training samples and a small sample size, thereby achieving, by constructing a target detector, effective clutter suppression and increasing target detection performance.

Description

technical field [0001] The invention relates to the field of radar signal processing, in particular to a beam-Doppler channel adaptive selection STAP method. Background technique [0002] Space-time adaptive processing (STAP) is a key technology to improve the performance of airborne radar detection of moving targets, but this technology faces the challenge of limited filter training samples, and the challenge is in the non-uniform clutter environment is more severe. In the past ten years, the technology has made certain developments, such as the proposed reduced dimension (reduced dimension) STAP method, reduced rank (reduced rank) STAP method, model parameterization (model-based) STAP method, knowledge-based (knowledge) -aided) STAP method, STAP method based on sparse recovery, etc. [0003] As far as dimensionality reduction STAP methods are concerned, such as auxiliary channel method (auxiliary channel receiver, ACR), local joint processing method (joint domain localiz...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/50
CPCG01S13/50G01S7/41
Inventor 阳召成朱轶昂黄建军
Owner SHENZHEN UNIV
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