李爱国,张诗玉

• 1:长安大学地测学院
• 2:河南理工大学测绘学院
• 3:河南测绘局矿山空间信息技术国家测绘局重点实验室
• 4:武汉大学卫星导航定位技术研究中心

摘要(Abstract)：

大气折射延迟是InSAR测量的一个重要误差源,严重影响对干涉图的正确解译,因此必须对其进行削弱或消除,利用GPS连续运行站估计的大气天顶延迟可对干涉图中的大气效应进行校正,但离散的GPS天顶延迟须进行空间插值才能满足InSAR的高分辨率要求。本文基于天津的GPS观测数据,利用Berense、PANDA软件估算了天顶延迟,对进行了相互验证,吻合较好。通过对相隔35天的干涉图和插值后的GPS大气图比较,发现两者整体趋势上较为一致,干涉图相位去掉GPS大气延迟后,精度明显提高,长波项效应得到了有效的减弱。

关键词(KeyWords)： InSAR;干涉图;GPS;大气延迟;插值

Abstract:

Keywords:

基金项目(Foundation): 矿山空间信息技术国家测绘局重点实验室基金资助(KLM201005)

作者(Author): 李爱国,张诗玉

DOI: 10.16251/j.cnki.1009-2307.2011.02.061

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