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| Long term monitoring of urban subsidence by Permanent Scatterer DInSAR | |
| 引用本文： | TANG Yixian,ZHANG Hong,WANG Chao. Long term monitoring of urban subsidence by Permanent Scatterer DInSAR[J]. 自然科学进展, 2007, 17(1): 107-111 |
| 作者姓名： | TANG Yixian ZHANG Hong WANG Chao |
| 作者单位： | 1. The Chinese Remote Sensing Satellite Ground Station, Chinese Academy of Sciences, Beijing 100086, China; 2. State Key Laboratory of Remote Sensing IRSA, Chinese Academy of Sciences, Beijing 100101, China |
| 基金项目： | Supported by National Natural Science Foundation of China(Grant no．40501044)，the National Program on Key Basic Research Projects (Grant No．2001CB309406) |
| 摘 要： | When using differential SAR interferometry (DInSAR) to monitor the surface deformation over a long time scale, it is often strongly affected by the spatial and temporal decorrelations and atmospheric dishomogeneities. The recently developed Permanent Scatterers (PS) technique proposed by Fertti et al. can overcome these difficulties by interpreting time-series of interferometric phase only at coherent point scatterers. In this study, we apply this PS technique using 25 ERS-1/2 scenes from 1992 to 2000 to monitor the subsidence in Suzhou. By using the linear deformation model, the deformation map in Suzhou urban area over the eight years is obtained. And the calculated results are in good agreement with the measurements of leveling. |
| 关 键 词： | Permanent Scatterer differential SAR interferometry urban subsidence. |
Long term monitoring of urban subsidence by Permanent Scatterer DInSAR |
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| TANG Yixian,ZHANG Hong,WANG Chao. Long term monitoring of urban subsidence by Permanent Scatterer DInSAR[J]. , 2007, 17(1): 107-111 | |
| Authors: | TANG Yixian ZHANG Hong WANG Chao |
| Affiliation: | 1. The Chinese Remote Sensing Satellite Ground Station, Chinese Academy of Sciences, Beijing 100086, China; 2. State Key Laboratory of Remote Sensing IRSA, Chinese Academy of Sciences, Beijing 100101, China |
| Abstract: | When using differential SAR interferometry (DInSAR) to monitor the surface deformation over a long time scale, it is often strongly affected by the spatial and temporal decorrelations and atmospheric dishomogeneities. The recently developed Permanent Scatterers (PS) technique proposed by Fertti et al. can overcome these difficulties by interpreting time-series of interferometric phase only at coherent point scatterers. In this study, we apply this PS technique using 25 ERS-1/2 scenes from 1992 to 2000 to monitor the subsidence in Suzhou. By using the linear deformation model, the deformation map in Suzhou urban area over the eight years is obtained. And the calculated results are in good agreement with the measurements of leveling. |
| Keywords: | Permanent Scatterer differential SAR interferometry urban subsidence. |
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