本文首先介绍了星载SAR回波信号仿真相关技术，包括星地空间几何模型、回波信号数学模型和距离频域脉冲相干法。在此基础上给出了一种星载SAR回波信号仿真方案，并详细给出了其仿真算法流程。然后通过对仿真算法流程的并行性分析，以并行编程标准OpenMP为基础对仿真算法进行了并行化。仿真实验结果证明了并行仿真算法的正确性和高效性。

This paper firstly describes some techniques of space-borne SAR raw signal simulation, including satellite-ground space geometric model, space-borne SAR raw signal mathematic model and RFPC algorithm. Based on these techniques, a method for space-borne SAR raw signal simulation is presented and the simulation flow is given in details. After the parallelizability analysis, the simulation method is parallelized with parallel programming tool OpenMP. Simulation results prove that the parallel simulation method is correct and effective.