| 基于地形和GPS观测的SAR干涉图大气延迟估计 |
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| 引用本文： | 杨成生,张勤,赵超英,王宏宇,王亚男.基于地形和GPS观测的SAR干涉图大气延迟估计[J].大地测量与地球动力学,2011,31(1):142-146. |
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| 作者姓名： | 杨成生 张勤 赵超英 王宏宇 王亚男 |
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| 作者单位： | 长安大学地质工程与测绘学院，西安 710054 |
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| 基金项目： | 国土资源大调查项目(1212010914015); 国家自然科学基金(40902081,40802075) |
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| 摘 要： | 大气效应尤其是大气水汽含量在时间和空间上变化引起的雷达信号传播延迟,是重轨雷达干涉测量中难以消除的主要误差源之一.仅借助对CPS水汽的空间数学插值实现对InSAR中的大气延迟改正时,由于未能顾及地形对大气湿延迟的影响,导致改正效果较差‘针对这一问题,分析了大气湿延迟中垂直分层部分与地形的关系,建立了两者间相关函数模型,...
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| 关 键 词： | SAR 干涉图 GPS 大气延迟 插值方法 |
ATMOSPHERIC DELAY ESTIMATION OF SAR INTERFEROGRAM BASED ON GPS OBSERVATIONS AND TERRAIN |
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| Yang Chengsheng,Zhang Qin,Zhao Chaoying,Wang Hongyu,Wang Yanan.ATMOSPHERIC DELAY ESTIMATION OF SAR INTERFEROGRAM BASED ON GPS OBSERVATIONS AND TERRAIN[J].Journal of Geodesy and Geodynamics,2011,31(1):142-146. |
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| Authors: | Yang Chengsheng Zhang Qin Zhao Chaoying Wang Hongyu Wang Yanan |
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| Institution: | Yang Chengsheng,Zhang Qin,Zhao Chaoying,Wang Hongyu and Wang Yanan(Institute of Geological Engineering and Surveying,Chang'an University,Xi'an 710054) |
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| Abstract: | The radar signal propagation delay caused by atmospheric effects,especially atmospheric water vapor content changing in time and space,is one of the main error sources in repeat-pass interferometry SAR,which is difficult to eliminate and greatly limits the applications of differential interferometry SAR.When only GPS water vapor is considered for the atmospheric delay correction in InSAR,it is will be leading to poor effect of correction taking into account the impact of topography to atmospheric wet delay.... |
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| Keywords: | SAR interferogram interpolation method GPS atmospheric delay |
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