地基合成孔径雷达的边坡形变监测应用研究  

Research on application of GB-SAR in slope deformation monitoring

作　　者：王军飞[1] 肖慎轲 刘东烈 汪雯雯 彭军还[1] WANG Junfei;XIAO Shenke;LIU Donglie;WANG Wenwen;PENG Junhuan(China University of Geos ciences(Beijing),Beijing 100083,China;Guizhou Provincial First Institute of Surveying and Mapping(Guizhou Beidou Navigation Location Service Center),Guiyang 550000,China;Key Laboratory of Coal Geological Geophysical Exploration Surveying&Mapping Institute of Shanxi Province,Jinzhong,Shanxi 030600,China)

机构地区：[1]中国地质大学(北京),北京100083 [2]贵州省第一测绘院(贵州省北斗导航位置服务中心),贵阳550000 [3]山西省煤炭地质物探测绘院重点实验室,山西晋中030600

出　　处：《测绘科学》2021年第5期58-65,共8页Science of Surveying and Mapping

摘　　要：针对露天矿开采过程中边坡发生形变导致失稳的问题,使用地基合成孔径雷达对矿坑边坡进行形变监测。基于小基线集技术,该文提出以PS点相位相干系数的均值作为子集划分的参考指标,并提出在子集内采用粗差探测技术对PS点进行时间维解缠,有效削弱了子集内的大气延迟影响并防止了解缠误差在空间域的传递。通过首云铁矿边坡形变监测实验,结果表明:该文提出的方法能有效处理GB-SAR边坡连续监测数据,能够获取露天矿边坡PS点在监测期的时间序列形变,该方法在边坡稳定性监测方面具有实用性。Aiming at the problem of instability caused by slope deformation during open-pit mining,ground-based synthetic aperture radar(GB-SAR)is used to monitor the deformation of the pit slope.Based on the small baseline set technology,this paper proposes to use the mean value of the phase coherence coefficients of the PS points as the reference index for the subset division,and proposes the use of gross error detection technology to unwrap the PS points in the time dimension in the subset,which effectively weakens the atmospheric delay affects inside the subset and prevents the propagation of unwrapping errors in the spatial domain.The results of the Shouyun Iron Mine slope deformation monitoring experiment show that the method proposed in this paper can effectively process the continuous monitoring data of the GB-SAR slope,and can obtain the time series deformation of the PS point of the open-pit slope during the monitoring period,this method has practicality in the field of slope stability monitoring.

关 键 词：边坡 地基合成孔径雷达 小基线集技术 形变监测 粗差探测 

分 类 号：P237[天文地球—摄影测量与遥感]