双站合成孔径雷达随机扰动误差分析

Random Disturbance Error Analyses of Bistatic Synthetic Aperture Radar

根据双站合成孔径雷达飞行平台的运动特点,分析了随机扰动误差对双站正侧视SAR成像的影响,推导出了载体平台沿理想航线方向扰动和横向扰动情况下的图像位移准则和分辨率准则,以及振动情况下控制图像对比度损失的限制条件,并对这些结果进行了分析,得出了相关结论,这对双站SAR的工程实践具有重要的指导意义。

According to the motion features of bistatic SAR （Synthetic Aperture Radar） flying-platforms, effects of their random disturbances on side-look imaging of bistatic SAR are analyzed. The criteria of geometrical image linearity and the resolution criteria in both cases of disturbances along ideal flight axis and along transverse, and ISLR criteria used to limit the reduction of image contrast in the case of vibrations are derived in detail. Then, through analyzing those results, some conclusions related to bistatic SAR imaging are obtained which have significance for the application of bistatic SAR.