飞行平台的仿真是星载SAR系统仿真中一个非常重要的部分。星载SAR(合成孔径雷达)仿真系统与传统的机载SAR仿真系统在飞行平台部分存在很大的差异。文中详细论述了SAR卫星平台仿真中轨道动力学、波束投影点、星下点以及卫星与地面目标瞬时相对运动等问题的仿真方法及其实现，并就一些近似计算给SAR系统带来的误差进行了分析。

The platform simulation is an important part in the spaceborne SAR(Synthetic Aperture Radar) system simulation. The platform of spaceborne SAR is greatly different from that of Airborne SAR. In this paper, some problems of the spaceborne SAR platform simulation are discussed such as satellite's orbit, footprint, nadir and relative motion between SAR and target . In addition, the error of some approximate simulation methods is analyzed in this paper.

TN959.73 TN958