[关键词]
[摘要]
首先对ChirpScaling算法产生相位误差的原因进行了分析推导 ,对雷达有效作用距离、相干积累角和信号相对带宽这三个导致相位误差的因素及它们对成像质量的影响分别进行了分析 ,指出只有在较小的雷达作用距离以及较小的信号带宽和较小的方位向处理角的条件下 ,才能用ChirpScaling算法对合成孔径雷达进行有效的成像 ,最后通过计算机仿真验证了结论的有效性
[Key word]
[Abstract]
In this paper, the reason causing the phase error to be produced by Chirp Scaling Algrithm are analyzed, The consequences resulting in phase error of the effective radar range, coherent integral angle and the relative bandwidth of the signal and its influence on imaging quality are analysised, and only on the condition of the near radar range, small cohenrent integral angle and narrow relative bandwidth of the signal, the Chirp Scaling Algorithm can be used correctly for Synthetic Aperture Radar(SAR) imaging. Finally, the conclusions are tested by computer simulation.
[中图分类号]
TN957.52
[基金项目]
“十五”国防预研资助:国防科技重点实验室基金项目 ( 5 14 3 10 2 0 10 1KG0 1)
