基于InSAR的重庆东港地区地表形变监测

Surface Deformation Monitoringof Chongqing Donggang Area Based on InSAR

针对高填方区域沉降监测,以重庆东港为研究对象,采用PS-InSAR技术获取研究区的PS点,将其作为地面控制点引入SBAS-InSAR技术流程,由此反演出研究区域的地表形变场;将形变结果与传统水准测量结果进行精度评定,并与未改进的SBAS-InSAR技术所获取的地表形变结果进行对比分析。研究结果表明:将PS-InSAR技术筛选的GCP引入SBAS-InSAR处理流程具有可靠性和实用性,适用于高填方场地的沉降监测。

For the settlement monitoring of the high-fill area,taking Chongqing Donggang as the research area,the PS-InSAR technology was used to obtain PS points of the research area,and these points were introduced into the SBAS-InSAR technology process as ground control points,so that the surface deformation field in the research area can be inverted.The accuracy evaluation of the deformation results and traditional leveling measurement results was carried out and compared with the surface deformation results obtained by the unimproved SBAS-InSAR technology.The research results show that introducing GCP screened by PS-InSAR technology into the SBAS-InSAR processing process has reliability and practicality and is suitable for settlement monitoring of high-fill sites.