摘要
单航过的干涉合成孔径雷达(InSAR)有很强的抗干扰能力,单部干扰机所发射干扰信号的干涉相位在不同快时间是完全相同的,不同慢时间也近似相等,不能产生具有高程信息的干扰图像。基于此,提出了一种利用双(多)干扰机产生InSAR三维图像欺骗干扰的方法,分析了InSAR的成像机理,给出了假目标模板设置方法,讨论了聚焦后复图像和干涉相位要求的干扰信号调制参数以及干涉相位的估计方法。产生的干扰信号在雷达接收机中可独立实现SAR二维像干扰,经干涉后能生成虚假高程信息,理论分析和仿真结果表明,该方法能实现对SAR二维成像和InSAR三维成像的有效干扰。
The single look I nterferometric synthetic aperture radar （InSAR） system is characterized by strong anti-interference capability. The interferometric phase of the interference signal is constant in the fast time domain, and remains nearly the same in the slow time domain, thus one jammer only is invalid in the active deception of an InSAR. This paper proposes a deception jamming method against InSAR using two（multi） jammers. The deceptive single look complex InSAR images （the interferograms） can be decomposed into two complex SAR components, and the interference signals of the two jammers are achieved from each component. A model of the deception jamming against InSAR is given, and the false-target templates and the steps in generating interference signals are studied. The estimation method and the effect of the error of InSAR parameters on the InSAR processing of the interference signals are analyzed. Theoretical analysis shows that the method is effective in the deception of both SAR 2-D images and InSAR 3-D images.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2014年第6期1714-1723,共10页
Acta Aeronautica et Astronautica Sinica
基金
国防预研项目(x1101020301)~~
关键词
电子对抗
电子抗干扰
干涉合成孔径雷达
欺骗干扰
干涉处理
electronic countermeasures
electronic-anti-interference
Interferometric synthetic aperture radar （InSAR）
deceptive jamming
interferometry processing
