利用短基线集技术监测地表形变  

Application of SBAS-InSAR technology in subsidence monitoring of Xi'an

作　　者：王宏宇[1] 张庆涛[1] 刘杰[2] 刘站科[1] 刘伟东[1] 

机构地区：[1]国家测绘地理信息局第一大地测量队,西安710054 [2]西安培华学院,西安710125

出　　处：《测绘科学》2015年第10期123-127,共5页Science of Surveying and Mapping

摘　　要：针对合成孔径雷达干涉测量(D-InSAR)技术由于受时间、空间失相干和大气延迟两大因素的影响,不能在地面沉降灾害监测方面得到较好应用的问题,该文对合成孔径雷达干涉测量小基线集(SBAS-InSAR)技术在地表形变监测中的适用性进行了研究。利用22景ALOS雷达影像开展了西安市地面沉降监测试验,并通过时间序列分析的方法获取了2007年1月到2011年2月时间段内西安市的高精度地表形变成果。实验结果表明,该成果与同时间内GPS、水准结果吻合较好。因此,该技术可广泛应用于城市地表形变监测,为相关部门决策提供科学可靠的数据参考。In view of the difficulty in forming interferogram for limited factors such as spatio-temporal decorrelation and stmospheric effect in deformation disaster monitor, the SBAS-InSAR technique was studied in this paper. Taking 22 ALOS SAR images as test data in Xi＇an land subsidence monitoring test, the deformation of Xi＇an region which from January 2007 to February 2011 was obtained. The deformation results had good consistency with the results of GPS and leveling which in the same time. In short, the SBAS-InSAR technique could be widely used in urban surface deformation monitoring.

关 键 词：短基线集 差分干涉测量 合成孔径雷达干涉测量 地面沉降 变形监测 

分 类 号：P208[天文地球—地图制图学与地理信息工程]