基于PSInSAR的成都地区地表沉降空间分布研究  

Study on Spatial Distribution of Surface Subsidence in Chengdu Area Based on PSInSAR

作　　者：张通德 冯晓[1] 党升 ZHANG Tongde;FENG Xiao;DANG Sheng(Department of Surveying and Mapping and Land Information Engineering,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学测绘与国土信息工程系,重庆400074

出　　处：《北京测绘》2022年第1期74-77,共4页Beijing Surveying and Mapping

基　　金：重庆市基础与前沿研究计划(cstc2015jcyjBX0023)。

摘　　要：针对成都地区土地规划利用的需要,采用永久散射体合成孔径雷达干涉测量技术(Permanent Scatterer InSAR,PSInSAR)对成都地区地表沉降空间分布情况进行了实验研究。结果表明,在该研究时段内研究区域最大沉降量达到24 mm,最大抬升量达到18 mm。研究区西北至东南方向地表在研究时段内发生了抬升,东北至西南方向出现了地表沉降现象,并对可能造成地表沉降的主要原因进行了分析。In order to meet the needs of land planning and utilization in Chengdu area,this paper studied the spatial distribution of land subsidence in Chengdu area by using Permanent Scatterer Interferometry(PSInSAR).The results showed that the maximum settlement and uplift of the study area reached 24mm and 18mm respectively.During the study period,the surface uplifted from northwest to Southeast and subsided from northeast to southwest.The main causes of surface subsidence were analyzed.

关 键 词：干涉测量 地表沉降 永久散射体 合成孔径雷达 

分 类 号：P258[天文地球—测绘科学与技术]