城市场景SAR原始回波模拟方法

SAR Raw Data Simulator for Urban Area

基于城市场景是在一随机分布的粗糙电介质地形上放置直立的若干建筑物的假设,建立多重散射模型,采用小面单元分析方法和Kirchhoff近似方法计算散射系数。回波信号模型采用二维FFT实现,最后通过对原始回波成像图形进行分析,表明了该方法的有效性。

SAR raw data simulator for urban scene was presented, based on the hypothesis that urban area was a set of dielectric buildings with vertical wall over a random rough dielectric terrain. Facet model and Kirchhoff approach including multiple-scattering effects are also employed for scattering model, while raw signal model using 2-D FFT. Analysis of the image formation of raw signal validates the method.