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Compressed sensing radar interference suppression sparse observation method

A compressed sensing and radar jamming technology, 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.

Active Publication Date: 2021-03-19
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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[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 modulated 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 spec...

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Abstract

The invention relates to a compressed sensing radar interference suppression sparse observation method, aiming at the characteristics of a compressed sensing radar, starting from the perspective of observation matrix design, a structured observation matrix is utilized to firstly perform modulation additional phase modulation on each emission pulse of the compressed sensing radar so as to effectively separate a real target echo from an interference signal; interference signals are suppressed while target echoes are accumulated, and the signal-to-interference ratio is increased; meanwhile, a sparse sampling observation matrix is utilized to further compress interference suppression observation data, so signal processing efficiency of the compressed sensing radar is further improved; secondly, an optimization solving problem is proposed for interference suppression observation, and efficiency of solving the optimization problem is improved by increasing constraint conditions; and finally,by solving the sparse optimization solving problem, accurate estimation of the target parameters of the compressed sensing radar under the interference background is realized, so the spatial interference signal is actively suppressed, and the target detection performance of the compressed sensing radar under the interference background is improved.

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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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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