InSAR结合概率积分法的矿区外围形变监测  

Application of InSAR technology combined with probability integral method in deformation monitoring of mining area periphery

作　　者：王志红 任金铜[1] 游洪 刘吉波 汪李辉 WANG Zhihong;REN Jintong;YOU Hong;LIU Jibo;WANG Lihui(Guizhou University of Engineering Science,Bijie,Guizhou 551700,China;China University of Mining and Technology(Beijing),Beijing 100083,China;Natural Resources Bureau of Jiangkou County,Jiangkou,Guizhou 554400,China)

机构地区：[1]贵州工程应用技术学院,贵州毕节551700 [2]中国矿业大学(北京),北京100083 [3]江口县自然资源局,贵州江口554400

出　　处：《测绘科学》2022年第1期84-94,共11页Science of Surveying and Mapping

基　　金：贵州省普通高等学校科技拔尖人才计划资助项目(黔教合KY字[2018]071号,黔教合KY字[2017]097号);贵州省区域内一流建设培育学科“生态学”项目(黔教科研发[2018]216号);贵州省教育厅青年科技人才成长项目(黔教合KY字[2018]405,黔教合KY字[2020]156,黔教合KY字[2020]149);贵州省高层次创新型人才项目(毕科人才合字[2021]09号,毕科联合字G[2019]15号)。

摘　　要：针对单轨InSAR仅能获取LOS向形变和概率积分法预计精度受参数影响较大的问题,探讨了InSAR技术最佳参考DEM的选用方法,根据走向线上点LOS向与真实形变矢量之间的夹角与倾角的函数关系,结合由概率积分法获得的倾角与InSAR获得的LOS向形变量计算得到走向线上点的形变矢量。结果表明:①4类DEM基于DInSAR和SBAS InSAR获得的形变场基本一致;②在DInSAR和SBAS InSAR形变监测中,采用LiDAR DEM的监测结果精度最佳,ALOS DEM次之;③Sentinel-1A和ALOS-1 PALSAR在两个近水平工作面获得的垂直向形变与水准数据差值的标准差分别为0.7、2.1 mm;在主要影响角正切tanβ误差较大的情况下,估计值与水准数据依然保持较好吻合性,差值分别小于5、10 mm,有效减小了tanβ的影响,验证了Sentinel-1A和ALOS-1 PALSAR在本方法中的适用性。In view of the fact that the single track InSAR can only obtain the deformation in Los direction and the prediction accuracy of probability integral method is greatly affected by the parameters,the selection method of the best reference DEM for InSAR technology was discussed firstly,then the angle between the Los direction of the point on the strike line and the real deformation vector expressed by the dip angle as a function.Secondly,Combining the dip angle obtained by probability integral method with the Los deformation obtained by InSAR,then the deformation vector of the points on the strike line was calculated.The results showed:①Based on DInSAR and SBAS InSAR,the deformation fields of four kinds of DEM were basically the same;②In the deformation monitoring of DInSAR and SBAS InSAR,LiDAR DEM got the best accuracy and ALOS DEM took the second place;③The standard deviation of the differences between leveling data and the vertical deformation obtained by Sentinel-1 A and ALOS-1 PALSAR in two near horizontal work faces were 0.7、2.1 mm respectively;In the case of tanβ(tangent of main influencing angle)with large error,the estimated value and leveling data still kept good consistency,and the difference was less than 5、10 mm respectively,which effectively reduced the impact of tanβ,and verified the applicability of Sentinel-1 A and ALOS-1 PALSAR in this method.

关 键 词：合成孔径雷达干涉测量 概率积分法 ALOS-1 PALSAR Sentinel-1A 

分 类 号：P237[天文地球—摄影测量与遥感]