在分析星载 ＳＡＲ回波信号完整模型的基础上，提出了一种基于 ＳＡＲ图象的原始回波数据模拟简易方法，并通过对回波信号统计分析以及成像处理验证了模拟结果的正确性和可行性。 Based on the analysis of the complete model of the satellite-borne SAR echo signal, a simple method for simulating the original echo data based on the SAR image is proposed. The correctness of the simulation results is verified by the statistical analysis of the echo signal and the imaging processing. feasibility.