The Analyse of SAR Imaging Algorithm Anti-Jamming Performance Based on Representative Shift-Frequency Jamming

ZHU Liang; CAO Peng; YU Wei-dong

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The Analyse of SAR Imaging Algorithm Anti-Jamming Performance Based on Representative Shift-Frequency Jamming

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- The Analyse of SAR Imaging Algorithm Anti-Jamming Performance Based on Representative Shift-Frequency Jamming
- Acta Electronica Sinica Vol. 39, Issue 3A, Pages: 47-51(2011)
- 作者机构：
  
  1. 中国科学院电子学研究所,北京,100080
  2. 中船工业集团船舶系统工程部,北京,100094
  3. 北京印刷学院,北京,102600
  4. 中国科学院电子学研究所北京,100080
  5. 中船工业集团船舶系统工程部北京,100094
  6. 北京印刷学院北京,102600
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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ZHU Liang, CAO Peng, YU Wei-dong. The Analyse of SAR Imaging Algorithm Anti-Jamming Performance Based on Representative Shift-Frequency Jamming[J]. Acta Electronica Sinica, 2011, 39(3A): 47-51.
DOI：

ZHU Liang, CAO Peng, YU Wei-dong. The Analyse of SAR Imaging Algorithm Anti-Jamming Performance Based on Representative Shift-Frequency Jamming[J]. Acta Electronica Sinica, 2011, 39(3A): 47-51. DOI：

摘要

本文针对RD和CS两种成像算法处理流程和方法的差异

分析了两种算法在移频干扰情况下的成像处理增益

并推导了两种算法的信干比处理增益公式.理论分析结果表明

在距离向采样率与SAR信号带宽相当的情况下

RD成像算法对移频干扰的抑制能力强于CS算法;在方位向过采样情况下

RD算法由于采用两维匹配处理从而获得比CS算法大的信干比处理增益

若对信号进行方位向滤波处理后

CS算法的对移频干扰的抗干扰能力与RD算法相当.最后

通过计算机仿真验证了本文的理论分析和结论.

Abstract

In according with the difference of RD algorithm and CS algorithm’ processing flow and calculation method

this paper analyzed processing gain of two algorithms in the environment of shift-frequency jamming

and deduced formulas of the SJR processing gain about two algorithms.The academic analyzing result demonstrates that the restrainable capability of RD algorithm about shift-frequency jamming is stronger than CS algorithm if the sampling rate of distance dimension is equivalent with the band width of the signal.And at the condition of the over sampling rate about azimuth dimension

the SJR processing gain of RD algorithm is larger than CS algorithm because of two dimension matching fliter of RD algorithm.If the over sampling signal is filtered in azimuth dimension

the SJR processing gain of CS algorithm is uniform with the RD algorithm.Finally

the computer simulation testifies the validity and availability of theory analyzing results and conclusion.

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