SAR原始回波信号生成算法的性能比较研究

Performance Comparison of Algorithms for SAR Raw Signal Generation

该文介绍了距离时域脉冲相干法、距离频域脉冲相干法和二维频域快速傅氏变换法3种SAR原始回波信号生成算法的基本原理和计算步骤,重点从误差分析、时间估计以及空间估计等3个方面对这3种算法进行了深入量化的比较研究,并利用X波段SAR系统参数实现了3种算法的仿真实验。理论分析及实验结果均表明,第3种算法不仅算法描述简明高效,可实现性强,而且所得的结果数据精度也较高,是一种较为实用的SAR原始回波信号生成算法。

The fundaments and computation procedures of three algorithms for SAR raw signal generation-RTPC, RFPC and 2DFFTare introduced. A quantitive comparison of these algorithms is emphatically studied on the aspects of error analysis, time and space evaluation. The simulation tests of these algorithms have been implemented using the system parameters of an X-band SAR. Both the theoretical analyses and the emulational results indicate that the third one is more practicable basing on its concise and efficient description and realizability, as well as high accuracy of its result.