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A Sparse Observation Method for Compressive Sensing Radar Interference Suppression

A technology of compressed sensing and radar jamming, applied in the field of radar wave observation, can solve the problems of increasing the complexity of the compressed sensing radar system, destroying the real sparse characteristics of the target space, and poor interference suppression effect, so as to improve the target detection performance and signal Processing efficiency and the effect of improving the signal-to-interference ratio

Active Publication Date: 2022-04-08
CHANGSHU INSTITUTE OF TECHNOLOGY
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Problems solved by technology

[0002] The impact of spatial interference signals on compressed sensing radar is reflected in the detected false targets, which will not directly invalidate the detection performance of compressed sensing radar. Therefore, the interference signal is concealed for the destruction of the real sparse characteristics of compressed sensing radar target space. , imperceptible to suppress
The existing technologies for compressive sensing radar anti-jamming signals are all focused on waveform design and echo preprocessing. Such technologies not only increase the complexity of the compressive sensing radar system, but also reduce the interference suppression effect in the case of complex interference types. poor

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  • A Sparse Observation Method for Compressive Sensing Radar Interference Suppression

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[0054] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0055] The present invention designs a compressed sensing radar interference suppression sparse observation method, which is used to realize the result detection of the echo pulse signal actually received by the compressed sensing radar. In practical applications, the following steps A to F are specifically performed.

[0056] Step A. For the L transmit pulse signals to be sent by the compressed sensing radar, respectively, obtain the modulation additional phases corresponding to the transmit pulse signals l=1, 2, ..., L, and perform additional phase modulation on the transmitted pulse signal to obtain the modulated transmitted pulse signal; then obtain the modulated L transmitted pulse signals, send them out by the compressed sensing radar, and then enter Step B.

[0057] In practical application, the above step A spe...

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Abstract

The invention relates to a sparse observation method for interference suppression of compressed sensing radar. According to the characteristics of compressed sensing radar, starting from the perspective of observation matrix design, using a structured observation matrix, firstly modulate and add phase modulation to each transmitted pulse of compressed sensing radar, thereby Effectively separate the real target echo and interference signal, and then suppress the interference signal while accumulating the target echo, and improve the signal-to-interference ratio; at the same time, the sparse sampling observation matrix is ​​used to further compress the interference suppression observation data, and further improve the compressed sensing The signal processing efficiency of the radar; then an optimization solution problem for interference suppression observation is proposed, and the efficiency of solving the optimization problem is improved by adding constraints; finally, by solving the sparse optimization problem, the compressed sensing radar under the background of interference is realized. The target parameters can be accurately estimated, so as to actively suppress the space interference signal, and improve the target detection performance of the compressed sensing radar under the interference background.

Description

technical field [0001] The invention relates to a sparse observation method for compressed sensing radar interference suppression, which belongs to the technical field of radar wave observation. Background technique [0002] The impact of spatial interference signals on compressed sensing radar is reflected in the detected false targets, which will not directly invalidate the detection performance of compressed sensing radar. Therefore, the interference signal is concealed for the destruction of the real sparse characteristics of compressed sensing radar target space. , imperceptible to suppress. The existing technologies for compressive sensing radar anti-jamming signals are all focused on waveform design and echo preprocessing. Such technologies not only increase the complexity of the compressive sensing radar system, but also reduce the interference suppression effect in the case of complex interference types. Poor. Contents of the invention [0003] The technical pro...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/04G01S7/41G01S7/38
CPCG01S13/04G01S7/411G01S7/38
Inventor 陶宇武尚张猛蛟张静亚刘诚毅钱枫居伟骏
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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