| D—InSAR三轨法监测城市地表沉降的研究 |
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| 引用本文： | 胡波,蒋弥,王兴旺,孙倩.D—InSAR三轨法监测城市地表沉降的研究[J].测绘工程,2009,18(2):46-50. |
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| 作者姓名： | 胡波 蒋弥 王兴旺 孙倩 |
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| 作者单位： | 中南大学信息物理工程学院,湖南,长沙,410083 |
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| 基金项目： | 国家自然科学基金资助项目，国家863专题项目 |
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| 摘 要： | 差分干涉测量（DInSAR）技术是合成孔径雷达（SAR）卫星应用的一个拓展。雷达图象的差分干涉可用于监测厘米级或更微小的地表形变，以揭示许多物理现象，如地震形变、火山运动、大气变化、冰川漂移、地面沉降以及山体滑坡等。实验选取典型的上海市地面沉降场作为研究对象，使用三幅欧洲空间局ERS1和ERS2的C波段数据，采用三轨法，成功提取了上海市相隔20个月的地面沉降图。
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| 关 键 词： | 差分干涉测量 合成孔径雷达 地表形变 三轨法 |
Three pass D-InSAR for urban lansubsidence measurement |
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| HU Bo,JIANG Mi,WANG Xing-wang,SUN Qian.Three pass D-InSAR for urban lansubsidence measurement[J].Engineering of Surveying and Mapping,2009,18(2):46-50. |
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| Authors: | HU Bo JIANG Mi WANG Xing-wang SUN Qian |
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| Institution: | (Department of Surveying and Land Information Engineering, Central South University, Changsha 410083,China) |
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| Abstract: | Differential Interferometry Synthetic Aperture Radar （D-InSAR） is a main profile of satellite SAR application. D-InSAR images can monitor movements on earth surface at centimeter or even more minute levels. Therefore, many earth physical phenomena can be discovered and analyzed , such as earth- quake, volcano, atmosphere meteorology, ice sheet movement , subsidence, landslide, and so on. This study selected a typical surface subsidence in Shanghai as a field study, using three images of European Space Agency ERS1/2 , C band data, and successfully obtained surface subsidence of Shanghai area separated 20 months by threepass D-InSAR. |
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| Keywords: | D-InSAR SAR Ground deformation threepass |
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