D-InSAR技术在矿区地表沉降中的监测研究

Monitoring and Research of D-InSAR Technology in Mining Area Surface Subsidence

采用双轨D-InSAR技术对某矿进行地表变形监测研究,利用SARscape软件中的D-InSAR工作流,对哨兵一号数据进行干涉处理、滤波、相位解缠、相位转形变等一系列数据处理,得到该煤矿地区2018年8月至2018年10月之间的地表变形图像。将D-InSAR处理得到的地表沉陷值与实际测量得到的变形值进行比较分析,进行精度评定。结果表明:通过对2018年2景Sentinel-1影像进行二轨差分干涉处理,获得沉降区域与矿区工作面位置相符且呈漏斗状,沉降区变化范围在0—52.3 mm之间,与所测得的精密水准数据具有较高的吻合度且误差不超过15 mm。

In this paper, the double D-InSAR technology research, in addition to the surface deformation monitoring using SARscape software of D-InSAR workflow, interference on Sentinel-1 data processing, filtering, phase unwrapping, phase transfer deformation and a series of data processing, get the mine area between October 2018 and August 2018 images of the surface deformation. The surface subsidence value obtained by D-INSAR processing is compared with the deformation value obtained by actual measurement, and the accuracy is evaluated. The results show that, through the two-track differential interference processing of the Sentinel-1 image of the 2 scenes in 2018, the settlement area is consistent with the working face of the mining area and is funnel-shaped. The variation range of the settlement area is between 0 and 52.3 mm, which is consistent with the measured precision level data with an error of no more than 15 mm.