| Subsidence Velocity Estimation Using PS-Based Time Series DInSAR |
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| 作者姓名： | 陈强 刘国祥 李永树 丁晓利 |
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| 作者单位： | Department of Surveying Engineering Southwest Jiaotong University，Chengdu 610031 China，Department of Surveying Engineering Southwest Jiaotong University，Chengdu 610031 China，Department of Surveying Engineering Southwest Jiaotong University，Chengdu 610031 China，Department of Land Surveying and Geo-Informatics The Hong Kong Polytechnic University，Hong Kong China |
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| 基金项目： | The Natural Science Foundation of China （ No. 40374003 ） |
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| 摘 要： | Introduction As a new space-geodetic technology, satellitedifferential synthetic aperture radar interferometry(DInSAR) has proven highly powerful for regionaldeformation mapping with some prominent advantageslike high sensitivity to displacement, high spa…
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| 关 键 词： | 干涉测量法 时空分析 大气影响 地形图 |
| 文章编号： | 1005-2429（2007）01-0027-06 |
| 收稿时间： | 2006-02-21 |
Subsidence Velocity Estimation Using PS-Based Time Series DInSAR |
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| CHEN Qiang,LIU Guo-xiang,LI Yong-shu,DING Xiao-li.Subsidence Velocity Estimation Using PS-Based Time Series DInSAR[J].Journal of Southwest Jiaotong University,2007,15(1):27-32. |
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| Authors: | CHEN Qiang LIU Guo-xiang LI Yong-shu DING Xiao-li |
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| Abstract: | Satellite differential synthetic aperture radar interferometry (DInSAR) has two limitations, i.e., spatio-temporal decorrelation and atmospheric influence, for the application of regional deformation mapping. This paper proposed a new approach called time series DInSAR based on permanent scatters (PS) to overcome the limitations, and the relevant mathematical model and computing method are also developed. With the proposed algorithm, the experiments were performed to estimate the subsidence velocity field over Shanghai using 26 ERS-1/2 SAR images acquired from 1992 to 2002. The deformation signatures, atmospheric delay and other errors were separated effectively, and the subsidence velocity field over Shanghai was also derived. |
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| Keywords: | Permanent scatterers Time series DInSAR Atmospheric delay Subsidence velocity |
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