联合Sentinel-1A升降轨的DS-InSAR金川矿区形变提取  

Deformation extraction of Jinchuan mining area using DS-InSAR with Sentinel-1A ascending and descending orbit

作　　者：郭捷[1] 张功海 宋烨炜 白宇兴 胡纪元 王杰 吴文豪[5] 葛子轩 GUO Jie;ZHANG Gonghai;SONG Yewei;BAI Yuxing;HU Jiyuan;WANG Jie;WU Wenhao;GE Zixuan(Insitute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Jinchuan Group Co.,Ltd.,Jinchang 737100,China;The College of Geography and Environment Science,Henan University,Zhengzhou 475001,China;School of Civil Engineering,North China University of Technology,Beijing 100144,China;School of Earth Sciences and Spatial Information Engineering,Hunan University of Science and Technology,Xiangtan 411100,China)

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]金川集团股份有限公司,甘肃金昌737100 [3]河南大学地理与环境学院,河南郑州475001 [4]北方工业大学土木工程学院,北京100144 [5]湖南科技大学地球科学与空间信息工程学院,湖南湘潭411100

出　　处：《测绘通报》2025年第3期1-7,共7页Bulletin of Surveying and Mapping

基　　金：国家自然科学基金(42072305);湖南省自然科学基金青年基金(2021JJ40198)。

摘　　要：金川矿区镍资源储备极为丰富,是我国最大的镍金属生产基地。传统的PS-InSAR在金川矿区测量存在目标点密度低、形变区解缠错误、形变结果提取精度低的问题。鉴于此,本文采用先进的DS-InSAR方法,对2021年8月—2022年6月的3组不同轨道(升轨Path128、降轨Path33、降轨Path135数据)的Sentinel-1A数据进行处理,将监测点密度与传统PS-InSAR方法获得的结果进行对比,以及两类时序InSAR提取的形变结果与GNSS点位监测进行交叉验证。结果表明:①对于金川矿区矿体监测的监测点(MPS)密度较PS-InSAR方法至少提升了5倍以上;②利用DS-InSAR和PS-InSAR解算的时序形变结果与GNSS站点时序形变结果分别根据平均绝对误差、均方根误差、皮尔逊相干系数进行对比,DS-InSAR结果在3组指标上均效果更佳,提取的形变结果精度更高。The Jinchuan mining area is extremely rich in nickel resources and is the largest nickel metal origin in China.The traditional PS-InSAR method has many problems such as low target point density,deformation area unwrapping errors,and low extraction accuracy of deformation results in the Jinchuan mining area.This paper adopts the advanced DS-InSAR method to process three groups of Sentinel-1A data from different orbits(ascending orbit Path 128,descending orbit Path 33,and descending orbit Path 135)from August 2021 to June 2022.The results are compared with the traditional PS-InSAR method in terms of monitoring point density.The deformation results extracted from the two types of time-series InSAR are cross-validated against the GNSS sites monitoring results.The results show that:①The MPS density for the mining body monitoring in the Jinchuan mining area is at least 5 times higher than the PS-InSAR method.②The time-series deformation results solved by DS-InSAR and PS-InSAR are compared with the GNSS sites time-series deformation results in terms of mean absolute error,root mean square error,and Pearson correlation.The three groups of indicators quantitatively reflect that DS-InSAR has the better performance and indicates the deformation results extracted by DS-InSAR are more accurate.

关 键 词：升降轨 金川矿区 Sentinel-1A DS-InSAR GNSS 

分 类 号：P237[天文地球—摄影测量与遥感]