系统工程与电子技术 ›› 2018, Vol. 40 ›› Issue (5): 1004-1011.doi: 10.3969/j.issn.1001-506X.2018.05.07

• 传感器与信号处理 • 上一篇    下一篇

对SAR-GMTI的大区域遮蔽有源-无源协同干扰方法

周阳, 毕大平, 沈爱国   

  1. 国防科技大学电子对抗学院, 安徽 合肥 230037
  • 出版日期:2018-04-28 发布日期:2018-04-24

Coordinated large-area shading jamming method to SAR-GMTI combining active and passive jamming

ZHOU Yang, BI Daping, SHEN Aiguo   

  1. College of Electronic Countermeasures, National University of Defense Technology, Hefei 230037, China
  • Online:2018-04-28 Published:2018-04-24

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摘要：

针对合成孔径雷达动目标检测(synthetic aperture radar-ground moving target indication,SAR-GMTI)系统无源干扰不够灵活和有源干扰不够稳健的问题,提出一种对SAR-GMTI的大区域遮蔽有源-无源协同干扰方法。该方法中无源干扰的实现是利用旋转角反射器L形排布,有源干扰的实现是利用运动调制-间歇采样复合干扰,并以无源干扰作为有源-无源干扰的主体部分,有源干扰协同工作作为无源干扰的补充。由于有源干扰协同工作弥补了无源干扰的干扰对消区,因而能够实现对SAR-GMTI的大区域遮蔽干扰效果。建立干扰模型后,对有源-无源干扰效果进行详细分析,并给出了最佳协同干扰时的参数设置方案,仿真实验证明了此干扰方法的正确性和对SAR以及SAR-GMTI干扰的有效性。

Abstract:

In view of the inflexibility of passive jamming and lack of robustness of active jamming against synthetic aperture radar(SAR)-ground moving target indication(GMTI), a coordinated jamming method is proposed to combine active jamming and passive jamming to elicit better jamming effect. With passive jamming as the principal part of this jamming method and active jamming as a complement to passive jamming, passive jamming can be realized via L-shaped rotating angular reflectors while active jamming can be realized via motion modulated-intermittent sampling compound jamming. Since coordinated work of active jamming complements the failure part of the passive jamming, a large area shading effect to SAR-GMTI is achieved. This thesis further constructs the jamming model and analyzes the effectiveness of the jamming method proposed. In the meantime, the parameter setting scheme is proposed. Simulation results verify the correctness of the method to SAR and SAR-GMTI.

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