InSAR构型下的分布式卫星GMTI性能分析  

GMTI Performance Analysis for Distributed Satellites with InSAR Formation

作　　者：蔚婧[1] 廖桂生[1] 杨志伟[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,西安710071

出　　处：《宇航学报》2009年第5期2037-2042,共6页Journal of Astronautics

基　　金：国家自然科学基金重点项目(60736009);国家杰出青年基金(60825104)

摘　　要：InSAR构型下的分布式卫星的垂直航向基线对地形的敏感性导致杂波抑制难以有效进行,严重影响运动目标检测性能。针对这一问题,分析了不同垂直基线不同地面起伏情况下杂波抑制的性能。推导了通道失配对分布式卫星回波相关性的影响。仿真实验的结果为分布式卫星编队构型提供了一定依据。The cross-track baseline of the distributed satellites is sensitive to the terrain fluctuation which badly affects the performance of clutter suppression. The influence of the channel mismatch on the correlation of the radar echoes is derived in terms of the system model of the distributed satellites system. The paper analyzed the clutter suppression capability under different cross-track baseline and different terrain circumstance. Simulation results provide some basis to the satellites formation design.

关 键 词：分布式卫星 地面运动目标检测 InSAR构型 幅相误差 

分 类 号：TN957[电子电信—信号与信息处理]