利用渐进式SBAS-InSAR监测分析北京平原地区地表形变  

Monitoring and Analysis of Surface Deformation in Beijing Plain Using Progressive SBAS-InSAR

作　　者：刘媛媛[1,2,3] 晏霞 夏元平 赵振宇[2] LIU Yuanyuan;YAN Xia;XIA Yuanping;ZHAO Zhenyu(Key Laboratory for Digital Land and Resources of Jiangxi Province,East China University of Technology,418 Guanglan Road,Nanchang 330013,China;Faculty of Geomatics,East China University of Technology,418 Guanglan Road,Nanchang 330013,China;Key Laboratory of Mine Environmental Monitoring and Improving around Poyang Lake,MNR,418 Guanglan Road,Nanchang 330013,China)

机构地区：[1]东华理工大学江西省数字国土重点实验室,南昌市330013 [2]东华理工大学测绘工程学院,南昌市330013 [3]自然资源部环鄱阳湖区域矿山环境监测与治理重点实验室,南昌市330013

出　　处：《大地测量与地球动力学》2023年第3期239-245,共7页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41962018,42104030,42174055);江西省自然科学基金(20202BABL212016);东华理工大学江西省数字国土重点实验室开放基金(DLLJ202013);东华理工大学博士科研启动基金(DHBK2018004)。

摘　　要：以SBAS-InSAR解算结果为基础,采用融合序贯平差思想的渐进式SBAS-InSAR处理新增影像。在绝大部分已有数据形变参数和已有数据参数矩阵不变的情况下,仅将新增影像与较新的少部分已有影像进行增量解算,以获取所有影像时刻的地表形变结果,并以2019-06~2020-04北京平原地区地表形变为例进行实验。结果表明,利用渐进式SBAS-InSAR及SBAS-InSAR获取的地表形变速率之差的平均值和标准差分别为0.01 mm/a和0.1 mm/a,且渐进式SBAS-InSAR的解算时间仅为SBAS-InSAR的1/5~1/2。Based on sequential adjustment, we use progressive SBAS-InSAR to process the new images. Using the obtained results derived from SBAS-InSAR, only a small part of the existing images is combined with the newly acquired data to update corresponding time series deformation of all SAR images. Taking the surface deformation in Beijing plain from June 2019 to April 2020 as an example, the experimental results show that the mean and RSME of the surface deformation rate difference between the progressive and the traditional SBAS-InSAR are 0.01 mm/a and 0.1 mm/a, respectively. Moreover, the processing time of progressive SBAS-InSAR is just 1/5-1/2 times that of SBAS-InSAR.

关 键 词：北京平原 地表形变 SBAS-InSAR 渐进式SBAS-InSAR 序贯平差 

分 类 号：P237[天文地球—摄影测量与遥感] P258[天文地球—测绘科学与技术]