| 利用InSAR技术获取高寒高海拔地区高精度DEM |
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| 引用本文： | 杜青松,李国玉,彭万林,周宇,柴明堂,李金明.利用InSAR技术获取高寒高海拔地区高精度DEM[J].测绘通报,2021,0(3):44-49. |
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| 作者姓名： | 杜青松 李国玉 彭万林 周宇 柴明堂 李金明 |
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| 作者单位： | 中国科学院西北生态环境资源研究院冻土工程国家重点实验室,甘肃 兰州730000;中国科学院西北生态环境资源研究院大兴安岭冻土工程与环境观测试验研究站,黑龙江 加格达奇165000;中国科学院大学,北京100049;中国科学院西北生态环境资源研究院冻土工程国家重点实验室,甘肃 兰州730000;中国科学院西北生态环境资源研究院大兴安岭冻土工程与环境观测试验研究站,黑龙江 加格达奇165000;新疆地矿局第三地质大队,新疆 库尔勒841000;中国科学院西北生态环境资源研究院冻土工程国家重点实验室,甘肃 兰州730000 |
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| 基金项目： | 国家自然科学基金新疆联合基金重点项目(U1703244);中国科学院战略性先导科技专项(XDA2003020102);第二次青藏高原综合科学考察研究项目(2019QZKK0905)。 |
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| 摘 要： | 本文以Sentinel-1A SLC数据为原始影像，利用InSAR技术获取新疆西天山中部高寒高海拔地区小区域DEM，将获得的DEM与常用的SRTM v4 DEM和GDEMDEM进行对比分析。结果表明：利用InSAR技术处理Sentlnel-1A SLC数据可以获得分辨率为15 m的高精度DEM，该DEM数据精度优于SRTM v4 DEM和GDEMDEM，能更好地描绘地表地形细节，可作为输入数据获取地面高精度形变信息，为工程建设和地质灾害评价提供重要的基础数据。此外，该方法对DEM数据的更新也具有重大意义。
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| 关 键 词： | InSAR DEM 高寒地区 高分辨率 误差分析 工程和地质灾害评价 |
| 收稿时间： | 2020-05-13 |
Acquiring high-precision DEM in high altitude and cold area using InSAR technology |
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| DU Qingsong,LI Guoyu,PENG Wanlin,ZHOU Yu,CHAI Mingtang,LI Jinming.Acquiring high-precision DEM in high altitude and cold area using InSAR technology[J].Bulletin of Surveying and Mapping,2021,0(3):44-49. |
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| Authors: | DU Qingsong LI Guoyu PENG Wanlin ZHOU Yu CHAI Mingtang LI Jinming |
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| Institution: | (State Key Laboratory of Frozen Soil Engineering Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China;Da Xing'anling Observation and Research Station of Frozen-ground Engineering and Environment,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Jiagedaqi 165000,China;University of Chinese Academy of Sciences,Beijing 100049,China;The Third Geological Brigade of Xinjiang Geological and Mineral Exploration and Development Bureau,Korla 841000,China) |
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| Abstract: | Using Sentinel-1A SLC data as the original image,based on InSAR technology,the DEM data of the central small area located in West Tianshan,Xinjiang,a typically high and cold region is obtained in the paper. Then it compares the data with the commonly used SRTMDEM v4 DEM and GDEMDEM. The results show that: applying InSAR technology can obtain high-precision DEM with the resolution of 15 m by processing sentinel-1a SLC data. The DEM data precision is better than SRTM V4 DEM and GDEMDEM,which can better describe the details of the surface topography,can be used as input data to obtain high-precision deformation information of the ground,and can provide important basic data for engineering construction and geological disaster evaluation. In addition,this method is of great significance for DEM data updating. |
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| Keywords: | InSAR DEM high and cold region high-resolution error analysis engineering and geological hazard assessment |
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