The character of sar picture is analysed and r - d or chirp - scaling algorithm is introduced . the simulation of point , point array , two - dimensional object , three - dimensional object have been finished 論文詳細地討論了建立和選取模擬仿真參數(shù)的方法,并且對合成孔徑雷達圖像特征仿真原理進行了深入的分析。