Sentinel⁃1A TS⁃DInSAR津冀核心经济区广域地表沉降监测与分析  

Land Subsidence Monitoring and Analysis of Tianjin-Hebei Economic Region based on Sentinel-1A TS-DInSAR

作　　者：于冰[1,2,3,4] 何智勇 谭青雪 张过 李广宇[5] 佘杰 吴滔 王杨 YU Bing;HE Zhiyong;TAN Qingxue;ZHANG Guo;LI Guangyu;SHE Jie;WU Tao;WANG Yang(School of Civil Engineering and Geomatics,Southwest Petroleum University,Chengdu 610500,China;Institute of Petroleum and Natural Gas Spatial Information Engineering,Southwest Petroleum University,Chengdu 610500,China;State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China;The Third Railway Survey and Design Institute Group Corporation,Tianjin 300308,China)

机构地区：[1]西南石油大学土木工程与测绘学院,四川成都610500 [2]西南石油大学油气空间信息工程研究所,四川成都610500 [3]武汉大学测绘遥感信息工程国家重点实验室,湖北武汉430079 [4]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [5]中国铁路设计集团有限公司,天津300308

出　　处：《遥感技术与应用》2023年第2期454-464,共11页Remote Sensing Technology and Application

基　　金：国家自然科学基金青年科学基金项目(41801399);第65批中国博士后科学基金面上资助(2019M653476);测绘遥感信息工程国家重点实验室开放基金(18E01);四川省科技计划项目(2018JY0138)。

摘　　要：津冀地区位于华北平原,严重的地下水开采导致地表沉降十分显著,开展广域沉降监测具有重要的现实意义。以2016年2月至2018年11月获取的59幅Sentinel-1A SAR影像为数据源,采用相干点目标分析(IPTA)方法对该区域开展沉降监测,采用大量水准数据验证监测结果精度,基于验证后结果对研究区域沉降时空分布特点进行详细分析和解释。与水准数据对比,Sentinel-1A IPTA监测结果均方根误差(RSME)为±2.70 mm·a^(-1)。分析表明:研究区域内存在严重的不均匀地表沉降,最大沉降速率高达218.31 mm·a^(-1)。同时研究进一步表明Sentinel-1A时序差分干涉应用于广域地表沉降监测具有较高的精度水平和较好的应用潜力。Tianjin-Hebei region is located in the North China Plain.This area involves multiple economic center of China.The serious groundwater exploitation leads to very significant land subsidence in this area,so it is of great practical significance to carry out wide area subsidence monitoring in this region.In this paper,taking 59 sentinel-1A SAR images obtained from February 2016 to November 2018 as data source,subsidence monitoring in this area was carried out using the method of Interferometric Point Target Analysis(IPTA),and the result accuracy was verified based on a large number of leveling data.At the last,the spatial and temporal distribution characteristics of the subsidence were analyzed and explained in detail based on the verified results.As compared with the leveling data,the Root Mean Square Error(RSME)of sentinel-1A IPTA monitoring results is±2.70 mm·a^(-1).The results and analysis demonstrate that there is significant uneven land subsidence in the study area.The maximum subsidence rate is as high as 218.31 mm·a^(-1).Further analysis indicate that the surface subsidence is mainly related to the regional geological conditions and different types of groundwater exploitation.The study further shows that sentinel-1A time series differential interferometry has high precision and excellent application potential in wide area land subsidence monitoring.

关 键 词：Sentinel-1A TS-DInSAR 沉降监测与分析 精度验证 

分 类 号：P237[天文地球—摄影测量与遥感]