[关键词]
[摘要]
从回波中估计多普勒参数是合成孔径雷达运动补偿的关键。文中研究了多目标回波对参数估计的影响,从理论上推导了估计多普勒中心和调频率对回波的不同要求,并用两个指标举例分析了一段实测机载SAR数据,给出了实际应用中参数估计时选择回波的原则。
[Key word]
[Abstract]
Doppler parameters estimation from radar echoes is a key step in SAR(Synthetic Aperture Radar) motion compensation.This paper researched the effect of multiple targets echoes to estimate parameters and deducted theoretically the different requirement for echoes in estimating doppler centroid and doppler frequency modulation rate.Then giving a real airborne SAR echo as example,we analyzed it with two measurements and concluded the principle about choosing echoes in practice.
[中图分类号]
TN958
[基金项目]
“十五”国防预研资助项目(No.408010202)
