| 利用时序DInSAR监测填海造陆地区地表沉降 |
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| 引用本文： | 裴媛媛,廖明生,王寒梅. 利用时序DInSAR监测填海造陆地区地表沉降[J]. 武汉大学学报(信息科学版), 2012, 37(9): 1092-1095 |
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| 作者姓名： | 裴媛媛 廖明生 王寒梅 |
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| 作者单位： | 1. 武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号,430079
2. 上海地质调查研究院,上海市灵石路930号200072 上海地面沉降控制工程技术研究中心,上海市灵石路930号200072 |
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| 基金项目： | 国家自然科学基金资助项目，高等学校博士学科点专项科研基金资助项目 |
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| 摘 要： | 通过研究时序DInSAR相位模型,利用振幅离差、时间相干系数和统计分析多重方法提取了相干点目标,并根据不同相位分量的时空特性分离出形变相位,继而提取出相干点目标上的沉降速率。以上海市临港新城主城区为实验区,利用24景Envisat ASAR影像,得到了2007-10～2010-02间的沉降速率分布,并分析了冲填土年代对沉降的影响。
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| 关 键 词： | DInSAR 相干点目标 沉降 填海造陆 |
Monitoring Subsidence in Reclamation Area with Time Series DInSAR Images |
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| PEI Yuanyuan,LIAO Mingsheng,WANG Hanmei. Monitoring Subsidence in Reclamation Area with Time Series DInSAR Images[J]. Geomatics and Information Science of Wuhan University, 2012, 37(9): 1092-1095 |
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| Authors: | PEI Yuanyuan LIAO Mingsheng WANG Hanmei |
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| Affiliation: | 2,3(1 State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing, Wuhan University,129 Luoyu Road,Wuhan 430079,China)(2 Shanghai Institute of Geological Survey,930 Lingshi Road,Shanghai 200072,China,)(3 Shanghai Research Center for Subsidence Control Engineering,930 Lingshi Road,Shanghai 200072,China) |
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| Abstract: | The serious subsidence in reclamation area may cause inaccurate topographic survey based on bench points.Time series DInSAR is an effect method to detect subsidence velocity.We analyze the interferogram phase model,and use amplitude dispersion values and temporal coherence to select coherent points.According to the different space-time characteristics,we separate and extract the deformation phase,and detect subsidence velocity.24 Envisat ASAR images acquired from Oct.2007 to Feb.2010 were used to detect subsidence velocity.The results show that the age of Hydraulic-Fill Soil will affect the subsidence. |
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| Keywords: | DInSAR coherent point subsidence land reclamation |
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