目标电磁散射特性对高分辨率星载SAR图像仿真影响

摘要

建立了考虑目标电磁散射特性时频变化的回波仿真模型,给出了目标电磁散射特性对回波在方位向和距离向的调制效果,并对典型目标进行了回波仿真和成像处理,验证了目标电磁散射特性对高分辨率星载SAR图像仿真的影响,并提出了高分辨率星载SAR图像仿真方法改进的方向.%T he raw echo generation model is established considering the varying target electromagnetic scattering characteristics ,and the module effects on azimuth and range direction are also presented . The echo generation and imaging results for typical target demonstrate the effectiveness of the proposed analysis method . Further improvement direction is put forward for the high resolution spaceborne SAR image simulation .