D-InSAR三轨法监测城市地表沉降的研究  

Three pass D-InSAR for urban lansubsidence measurement

作　　者：胡波[1] 蒋弥[1] 王兴旺[1] 孙倩[1] 

机构地区：[1]中南大学信息物理工程学院,湖南长沙410083

出　　处：《测绘工程》2009年第2期46-50,共5页Engineering of Surveying and Mapping

基　　金：国家自然科学基金资助项目(40404001);国家863专题项目(2006AA12Z156)

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。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.

关 键 词：差分干涉测量 合成孔径雷达 地表形变 三轨法 

分 类 号：P225.1[天文地球—大地测量学与测量工程]