雷州半岛地区InSAR时序形变监测与分析  

InSAR Time Series Deformation Monitoring and Analysis in Leizhou Peninsula

作　　者：梁景才 LIANG Jing-cai(The Fourth Geological Team of Guangdong Geological Bureau,Zhanjiang Guangdong 524049,China)

机构地区：[1]广东省地质局第四地质大队,广东湛江524049

出　　处：《地矿测绘》2020年第4期21-26,共6页Surveying and Mapping of Geology and Mineral Resources

基　　金：国家自然科学基金项目(41471314,41001313)。

摘　　要：利用一种改进的时序InSAR新技术对覆盖研究区域的Sentinel-1影像进行处理。该技术结合PS-InSAR技术和SBAS-InSAR技术的优点,对选中的密集干涉点进行处理,通过干涉相位和垂直基线的线性回归求取高程残差,通过干涉相位和时间的线性回归求取线性形变速率,然后通过滤波去除噪声获取大气延迟相位。最终将大气延迟相位、形变相位和高程残差进行分离,利用模型解算时序形变。结果表明,该技术是一种有效的地面沉降监测方法。An improved time-series InSAR technology is proposed to process Sentinel-1 images covering the study area.This technology combines the advantages of PS-InSAR technology and SBAS-InSAR technology to process selected dense interference points.In this paper,we first obtain the elevation residual through the linear regression of the interference phase and the vertical baseline,and obtain the linear deformation rate through the linear regression of interference phase and time.Then,we get the atmospheric delay phase by removing noise through filtering.Next,we separate the atmospheric delay phase,deformation phase,and elevation residual.Finally,we use the model to solve the time series deformation.The results show that this technology is an effective method for land subsidence monitoring.

关 键 词：PS-INSAR SBAS-InSAR 地面沉降 时序形变 变形监测 

分 类 号：P237[天文地球—摄影测量与遥感] P642.26[天文地球—测绘科学与技术]