极地研究

极地研究 ›› 2025, Vol. 37 ›› Issue (4): 702-712.DOI: 10.13679/j.jdyj.20240066

• 研究论文 • 上一篇    下一篇

基于资源三号卫星影像对东南极格罗夫山地区DEM的建立及其精度分析

杨翼辰1,2,3, 张烁1,2, 胡泊1,2,3, 王泽民4, 刘少创1,2   

  1. 1中国科学院空天信息创新研究院数字地球重点实验室, 北京 100094;
    2可持续发展大数据国际研究中心, 北京 100094;
    3中国科学院大学, 北京 100049;
    4武汉大学中国南极测绘研究中心, 湖北 武汉 430079
  • 收稿日期:2024-07-11 修回日期:2024-09-23 出版日期:2025-12-30 发布日期:2026-01-12
  • 通讯作者: 张烁
  • 基金资助:
    中国科学院空天信息创新研究院科学与颠覆性技术项目资助

Generation and accuracy of a digital elevation model for Grove Mountains, East Antarctica based on ZY-3 satellite images

YANG Yichen1,2,3, ZHANG Shuo1,2, HU Bo1,2,3, WANG Zemin4, LIU Shaochuang1,2   

  1. 1 Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China;
    2 International Research Center of Big Data for Sustainable Development Goals, Beijing 100094, China;
    3 University of Chinese Academy of Sciences, Beijing 100049, China;
    4 Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China
  • Received:2024-07-11 Revised:2024-09-23 Online:2025-12-30 Published:2026-01-12

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摘要： 东南极格罗夫山是中国南极科学考察的核心区域之一, 建立该地区高精度的数字高程模型(DEM)对南极科学考察和冰川变化观测研究具有重要意义。基于资源三号(ZY-3)卫星的高分辨率光学立体测绘特征及其影像全面覆盖了格罗夫山核心区, 本文利用其三线阵影像生成了格罗夫山地区高分辨率数字高程模型(ZYDEM), 并通过与该地区高程控制点的系统比较, 完成了精度分析。分析结果表明: 所获得的ZYDEM的高程精度为(−2.57±8.15) m; 通过与格罗夫山地区筛选后的ICESat2脚点数据比较, 可得到ZYDEM的高程精度为(0.49±2.34) m; ZYDEM的精度高于南极地区常用DEM, 如BamberDEM、ICESatDEM和TanDEM-XDEM, 与REMA的精度水平相当。上述针对东南极格罗夫山地区建立的高精度DEM及其精度分析成果表明, 我国自主可控的资源三号立体测绘卫星在南极地区具备可靠的应用效能。

关键词: 数字高程模型(DEM), ICESat2,  资源三号卫星, 东南极格罗夫山

Abstract:

The Grove Mountains region in East Antarctica is one of the core areas for Chinese National Antarctic Research Expeditions. A high-precision Digital Elevation Model (DEM) for the region is important for supporting Antarctic expedition and glacier research. The ZY-3 satellite is a high-resolution optical stereo mapping satellite. Its images fully covers the core area of the Grove Mountains. This paper uses the triple linear-array stereo images to generate a high-resolution DEM for the Grove Mountains region (ZYDEM). Taking the elevation control points in the region as the reference, the elevation accuracy of ZYDEM is (−2.57± 8.15) m. Taking filtered ICESat-2 footprint data in the region as the reference, the elevation accuracy of ZYDEM is (0.47±2.03) m. The accuracy of ZYDEM is higher than that of common Antarctic DEMs, including BamberDEM, ICESatDEM, and TanDEM-XDEM, and is close to that of the Reference Elevation Model of Antarctica (REMA). The establishment and accuracy analysis of ZYDEM demonstrates the feasibility of using the ZY-3 satellite for the Antarctic region.


Key words: digital elevation model (DEM), ICESat-2,  ZY-3 satellite,  Grove Mountains of East Antarctica