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An Observation Matrix Based Compressed Sensing MIMO Radar Interference Suppression Method

An observation matrix and compressed sensing technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as inaccurate prior information, inability to guarantee accurate estimation of target information, and insufficient accuracy

Active Publication Date: 2020-12-11
CHANGSHU RES INST OF DALIAN UNIV OF TECH CO LTD
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Problems solved by technology

However, in the actual radar system, the prior information of the target is often inaccurate or not precise enough, in this case, the clutter suppression method will not be able to guarantee the accurate estimation of the target information

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  • An Observation Matrix Based Compressed Sensing MIMO Radar Interference Suppression Method
  • An Observation Matrix Based Compressed Sensing MIMO Radar Interference Suppression Method

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0024] Such as Figure 1 ~ Figure 2 As shown, the present invention provides an observation matrix-based compressed sensing MIMO radar interference suppression method for suppressing interference outside the angle of interest interval by designing an observation matrix with a specific structure, which generally includes three parts: compressed sensing The construction of the equivalent ideal beam of MIMO radar, the solution of the band-pass beamforming coefficient vector...

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Abstract

The invention discloses a compressed sensing MIMO radar suppression method based on an observation matrix. The method comprises the construction of a compressed sensing MIMO radar equivalent ideal beam, the solution of a band-pass beamforming coefficient vector, and the interference suppression observation for a received signal matrix; wherein, the construction of the equivalent ideal beam is usedfor solving a beamforming sparse vector; the solution of the band-pass beamforming coefficient vector is used for constructing a spatial-domain interference suppression observation matrix; and the interference suppression observation for the received signal matrix is used for suppressing the interference outside an angle section of interest through the equivalent beam. From the design of the observation matrix, the method suppresses the interference outside the angle section of interest by the compressed sensing radar by designing the observation matrix with specific structure, and significantly improves the detection performance of the compressed sensing radar in an interference background.

Description

technical field [0001] The invention specifically relates to an observation matrix-based compression sensing MIMO radar interference suppression method. Background technique [0002] The current existing clutter suppression method based on Capon beamforming, in the case of known covariance matrix of noise and clutter, uses the angle prior information of the target to obtain the beamforming coefficient pointing to the target, and the beamforming coefficient constitutes the observation Matrix, through the observation matrix, the compressed sensing MIMO radar can focus energy on the angle of the target, and realize the suppression of noise and clutter other than the target. However, in practical radar systems, the prior information of the target is often inaccurate or not precise enough. In this case, the clutter suppression method will not be able to guarantee accurate estimation of the target information. Contents of the invention [0003] Purpose of the invention: In orde...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 陶宇刘玉申张静亚徐健
Owner CHANGSHU RES INST OF DALIAN UNIV OF TECH CO LTD
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