一种SAR回波信号模拟方法的研究

Simulation Method Research of SAR Echo Wave Signal

深入分析了一种SAR回波信号模拟的方法。讨论了如何利用原始DEM数据构建地面三维几何模拟目标,分析了如何构建地面散射单元,讨论了地面散射单元散射参数的计算模型,根据雷达方程、单元散射模型及雷达脉冲信号形式建立了SAR回波信号的数学模型。最后根据所建立的模拟方法完成了一块真实自然地表的SAR回波信号的仿真,并取得了较为满意的结果。

A simulation method of Synthetic aperture radar echo-wave signal was detailedly analyzed.The method of using raw DEM data to construct three-dimension simulation targets was discussed and the method of constructing the terrain scattering cell was described.According to the radar equation,the scattering parameter model and the pulse signal model of radar,the mathematics models of Synthetic aperture radar echo-wave signal were established.Finally,the test of the SAR echo-wave simulation of a natural terrain was finished and the satisfied result was obtained.