GPS与PS-DInSAR方法的大气延迟变化量解算与精度分析Analysis on solution and accuracy of atmospheric delay variation based on GPS and PS-DInSAR
龙四春,张兆龙,胡艳冬,李黎,张立亚
摘要(Abstract)：
文章研究利用Kriging插值方法对天津地区11个连续运行GPS点网的大气延迟解算结果进行内插,得到区域连续GPS大气延迟变化分布。选择同一区域进行PS-DInSAR处理所得的残余相位主要由非线性形变相位、大气相位和噪声相位组成,尝试在时间域高通滤波和空间域低通滤波处理,得到与GPS同地域同时段的大气延迟变化分量。对所得两种大气延迟变化量进行对比分析,采用求差和均方根误差(Root Mean Square,RMS)进行统计检验,结果表明这两种方法得到的大气延迟变化分量基本一致,进一步集成可望得到更有效的监测结果。
关键词(KeyWords)： PS-DInSAR;GPS大气;大气延迟变化分量;滤波;对比分析
基金项目(Foundation): 国家自然科学基金(41474014,41004002);; 大地测量与地球动力学国家重点实验室基金(SKLGED2014-5-3-E);; 桂科能基金(1207115-21);; 煤炭资源与环保湖南省重点实验室基金(E21221)
作者(Author): 龙四春,张兆龙,胡艳冬,李黎,张立亚
DOI: 10.16251/j.cnki.1009-2307.2014.11.015
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