| 基于CGPS的CRInSAR大气改正——以香港地区为例 |
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| 引用本文： | 向荣,龙江平,冯光才.基于CGPS的CRInSAR大气改正——以香港地区为例[J].测绘工程,2008,17(4):47-49. |
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| 作者姓名： | 向荣 龙江平 冯光才 |
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| 作者单位： | 中南大学,信息物理工程学院测绘与国土信息工程系,湖南,长沙,410083;香港理工大学,土地测量与地理资讯学系,香港 |
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| 基金项目： | Hong Kong Government, Research Grants Council （RGC） （B-Q02C） |
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| 摘 要： | 基于角反射器的合成孔径雷达干涉测量（Corner Reflector InSAR）在低相干地区的地表形变监测中具有很大应用潜力。在CRInSAR所有误差源中，大气影响是最主要的影响因素之一。针对CRInSAR中的大气影响改正问题，详述了利用连续GPS站的数据和地面气象观测资料来对角反射器的大气影响进行改正。并利用香港地区12个GPS连续站的数据对6个角反射器上的大气影响做出改正，得出了较为可靠的结果。
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| 关 键 词： | GPS连续站 人工角反射器 合成孔径雷达干涉测量 大气改正 |
Modeling atmospheric effects of corner reflector InSAR based on CGPS observations and meteorological data:A case study in Hong Kong |
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| XIANG Rong,LONG Jiang-ping,FENG Guang-cai.Modeling atmospheric effects of corner reflector InSAR based on CGPS observations and meteorological data:A case study in Hong Kong[J].Engineering of Surveying and Mapping,2008,17(4):47-49. |
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| Authors: | XIANG Rong LONG Jiang-ping FENG Guang-cai |
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| Institution: | XIANG Rong, LONG Jiang-ping, FENG Guang-cai (1. Dept. of Surveying and Geo-Informatics, School of Info-Physics and Geomatics Enginering, Central South University, Changsha 410083,China;2. Dept. of Land Surveying ＆ Geo-Informatics, Hong Kong Polytechnic University, Hong Kong,China) |
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| Abstract: | Beside temporal and geometric decorrelation,the atmospheric effect is the most factor which limits the use of CRInSAR in lots of areas,especially in low coherence areas.This paper discusses and models atmospheric effects on Corner Reflectors InSAR with CGPS observations and meteorological data.In this paper,it processes the CGPS data from Hong Kong satellite positioning reference station network and then uses simple Kriging methods to interpolate the Zenith Wet Delay in the Corner Reflectors to get the atmosphere effects on Corner Reflectors.At last,some suggestions are given for future study. |
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| Keywords: | CGPS corner reflector InSAR atmospheric effect |
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