散射波干扰对合成孔径雷达成像干扰效果的分析

Analysis of jamming effect on scatter wave jamming to SAR imaging

研究了散射波干扰方法对合成孔径雷达(SAR)的干扰效果。分析了这种干扰方法对SAR距离向的干扰效果;提出了散射波干扰因子,利用驻定相位原理,分析了散射波干扰因子对SAR目标方位像特性的影响。进而提出了散射波干扰方法对SAR产生不同干扰效果所需的干扰条件,理论和仿真实验均表明:散射波干扰方法对机载SAR的干扰效果为虚假图像欺骗干扰加散焦图像压制干扰的综合干扰效果或者为散焦图像压制干扰效果;而对于星载SAR而言,其干扰效果为虚假图像欺骗干扰效果。

The paper studies the jamming effects on scatter wave jamming to synthetic aperture radar （SAR） and analyzes jamming effects to SAR in the range direction. Scatter wave jamming factor is put forward in the paper, and using the stationary phase principle, scatter wave jamming factor affected the imaging characteristics in the azimuth direction are analyzed in detail. Furthermore, the condition of scatter wave jamming to SAR which generates different jamming effects is discussed. The result shows that, this jamming method to airborne SAR can be regarded as false deceptive image jamming or disperse suppress image jamming, and the jamming effects are just false deceptive image jamming to spaceborne SAR.