分布式卫星InSAR系统基线转换精度分析  

Analysis of Baseline Conversion Accuracy in Distributed Satellite InSAR System

作　　者：郝晓龙[1] 陈力[1] 李威[2] 

机构地区：[1]北京跟踪与通信技术研究所,北京100094 [2]北京航空航天大学电子信息工程学院,北京100191

出　　处：《现代雷达》2010年第7期24-28,共5页Modern Radar

基　　金：国防预研基金资助项目

摘　　要：在研究分布式卫星干涉合成孔径雷达(InSAR)系统空间几何关系模型的基础上,区分出测量基线、修正基线和干涉基线,提出了从测量基线到修正基线的转换方法,并且分析了分布式卫星InSAR系统测量基线到修正基线转换的主要误差源全球定位系统(GPS)测量误差与部位修正误差。通过计算机仿真分析,得出了GPS双频测量误差占主导,部位修正误差对基线测量精度影响也不可忽略的结论。该结论对分布式卫星InSAR系统的设计与优化具有重要的指导意义。In this paper, based on the spatial relation model of the distributed satellite interferometric synthetic aperture radar（InSAR） system, distinguished measured baseline, corrected baseline and interferometric baseline, proposed a transfer method, the main error sources of the baseline transfer are analyzed. The sources include GPS measurement error and parts-amendment error. Finally through computer simulation, two important conclusions are obtained, Corrected baseline error main affect by measure baseline, meanwhile parts-amendment error can＇t neglected. Furthermore the conclusions have great guiding significance on the design and optimization of the distributed satellite SAR system.

关 键 词：分布式卫星干涉合成孔径雷达系统 基线 部位修正 基线转换误差 

分 类 号：TN958[电子电信—信号与信息处理]