基于时序InSAR技术的焦作地区地表形变监测研究

Study on Surface Deformation Monitoring in Jiaozuo Area Based on Time Series InSAR Technology

摘要: 焦作地区地面沉降显著，为了准确掌握地面沉降动态，利用时序InSAR技术进行研究区的地表形变监测。文中使用短基线集干涉测量(SBAS-InSAR)技术对2020年9月~2021年11月的20景Sentinel-1A SAR影像进行干涉测量处理，从而生成形变时间序列；然后用相同时期的水准数据对地面沉降速率结果数据进行验证，通过进行参考基准的统一和整体偏差补偿，得到了经补偿以后的地面沉降速率数据，再对地面沉降速率数据与水准测量数据两者之间进行线性回归，比较的结果是二者趋势一致，线性关系明显，相关系数为0.703762，量值吻合。

Abstract: The land subsidence in Jiaozuo area is remarkable. In order to accurately grasp the land subsidence dynamics, the time series InSAR technology is used to monitor the land deformation in the study area. In this paper, 20 Sentinel-1A SAR images from September 2020 to November 2021 are processed by short baseline interferometry (SBAS-InSAR) technology, so as to generate deformation time series. Then, the leveling data of the same period are used to verify the rate of land subsidence result data, and the compensated rate of land subsidence data are obtained by unifying the reference datum and compensating the overall deviation. Then, the rate of land subsidence data and leveling data are linearly regressed, and the comparison results show that the two trends are consistent, the linear relationship is obvious, the correlation coefficient is 0.703762, and the values are consistent.