SAR electromagnetic interference suppression method and device

A technology of electromagnetic interference and echo signal, which is applied in the field of signal processing, can solve problems such as the inability to suppress broadband interference, and achieve the effects of easy engineering implementation, strong versatility, and improved accuracy

Pending Publication Date: 2021-03-16
AEROSPACE INFORMATION RES INST CAS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, existing technologies are still unable to suppress broadband interference

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  • SAR electromagnetic interference suppression method and device
  • SAR electromagnetic interference suppression method and device
  • SAR electromagnetic interference suppression method and device

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Embodiment Construction

[0027] Next, the technical solutions of the present invention will be described in detail below in conjunction with the drawings and specific embodiments, and it is understood that these embodiments are intended to illustrate the scope of the invention, and those skilled in the art after reading the present invention. Modifications to the various equivalence forms of the invention have fallen within the scope of the appended claims.

[0028] All techniques and scientific terms used herein are identical to those skilled in the art, unless otherwise defined. The terms used in the specification of the present invention are merely intended to describe specific embodiments, not intended to limit the invention.

[0029] Considering that the information of the SAR signal is abundant than a single domain, the present invention uses the characteristic difference between the time-frequency domain using the echo signal and the parameter, creatively, to create a time-frequency domain signal. ...

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Abstract

The invention discloses an SAR electromagnetic interference suppression method and device. The method comprises the following steps: determining a time-frequency distribution matrix of SAR echo signals; decomposing the time-frequency distribution matrix into a low-rank matrix and a sparse matrix; and performing inverse transformation of time-frequency transformation on the sparse matrix so as to remove electromagnetic interference in the SAR echo signal, and obtaining the echo signal after electromagnetic interference removal. According to the invention, SAR electromagnetic interference signals with large bandwidth and agile parameters can be suppressed.

Description

Technical field [0001] The present invention relates to the field of signal processing, and in particular, to a SAR electromagnetic interference suppression method and apparatus. Background technique [0002] Synthetic Aperture Radar, SAR is electromagnetic interference can be divided into narrowband interference and broadband interference by bandwidth size. In the prior art, narrowband interference is typically suppressed by the AR model method and the notch filtering method. However, prior art cannot suppress broadband interference. Therefore, how to suppress SAR electromagnetic interference signals with large bandwidth and parameter, becoming a technical issue that is urgent to solve in the art. Inventive content [0003] It is an object of the present invention to provide a SAR electromagnetic interference suppression method and apparatus to suppress a SAR electromagnetic interference signal having a large bandwidth and a parameter. [0004] In order to achieve the above obj...

Claims

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Application Information

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IPC IPC(8): G01S7/02G01S7/36G01S7/41G01S13/90
CPCG01S7/023G01S7/36G01S7/41G01S13/9017
Inventor 吕启元韩冰李光祚辛煜尹迪洪文胡玉新
Owner AEROSPACE INFORMATION RES INST CAS
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