基于ICESat-2 ATLAS数据的DEM高程精度评价

doi:10.13474/j.cnki.11-2246.2022.0361

测绘通报 ›› 2022, Vol. 0 ›› Issue (12): 84-90.doi: 10.13474/j.cnki.11-2246.2022.0361

基于ICESat-2 ATLAS数据的DEM高程精度评价

丁夏萌^1,2,3, 张继贤², 郭婧², 张鹤², 常亚茹^2,3,4

1. 兰州交通大学测绘与地理信息学院, 甘肃兰州 730070;
2. 国家测绘产品质量检验测试中心, 北京 100830;
3. 中国测绘科学研究院, 北京 100830;
4. 山东科技大学测绘科学与工程学院, 山东青岛 266590

收稿日期:2022-02-14 出版日期:2022-12-25 发布日期:2023-01-05
通讯作者: 张继贤。E-mail:zhangjx@casm.ac.cn
作者简介:丁夏萌(1996-),女,硕士生,主要研究方向为空间数据质量分析与误差修正。E-mail:244721518@qq.com
基金资助:
国家自然科学基金（41671440）；自然资源部项目（121134000000180009）；国家测绘产品质量检验测试中心“质量之翼”项目（2019-zlzy-008）

Vertical accuracy evaluation of DEM data based on ICESat-2 ATLAS

DING Xiameng^1,2,3, ZHANG Jixian², GUO Jing², ZHANG He², CHANG Yaru^2,3,4

1. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China;
2. Chinese Acadcmy of Surveying & Mapping, Beijing 100830, China;
3. National Quality Inspection and Testing Center for Surveying and Mapping Products, Beijing 100830, China;
4. College of Geomatics, Shandong University of Science and Technology, Qingdao 266590, China

Received:2022-02-14 Online:2022-12-25 Published:2023-01-05

摘要/Abstract

摘要： 为探究ASTER GDEMV3、SRTM1 DEM和AW3D30 DEM 3种开源DEM数据的高程精度，本文以高精度ICESat-2 ATLAS测高数据为参考数据，利用GIS统计分析、误差相关分析及数理统计对DEM的高程精度进行对比评价。结果表明：①AW3D30的质量最稳定；SRTM1 DEM在平原精度最高；在高原山地精度由高到低依次为AW3D30 DEM、ASTER GDEMV3、SRTM1 DEM。②DEM数据高程精度受地表覆盖影响较大，且与地形因素密切相关，在相同地表覆盖的两个研究区中DEM数据高程精度表现情况不一致，SRTM在平原地表覆盖下精度表现最好，平均误差为3.15 m，AW3D30 DEM在山地地表覆盖下精度表现最好，平均误差为7.61 m。③坡度对DEM数据的高程精度影响较大，在两个研究区3种DEM数据的高程误差均随坡度的增加而增加；坡向对DEM数据的高程精度影响较小，未发现明显的规律。

关键词: 高程精度, 误差分布, ICESat-2 ATL08, ASTER GDEMV3, AW3D30 DEM, SRTM1 DEM

Abstract: In order to investigate the elevation accuracy of three open source DEM data, ASTER GDEMV3、SRTM1 DEM and AW3D30 DEM. In this paper, high precision ICESat-2 ATLAS altimetry data is used as reference data, comparative evaluation of elevation accuracy of DEM using GIS statistical analysis, error correlation analysis and mathematical statistics.The results show that:①The quality of AW3D30 is the most stable; SRTM1 DEM has the highest accuracy in the plains; the accuracy in the highland mountains is AW3D30 DEM, ASTER GDEMV3, and SRTM1 DEM in descending order.②The elevation accuracy of DEM data is influenced by the surface coverage and is closely related to the topographic factors. The performance of DEM data elevation accuracy in the two study areas with the same surface coverage is not consistent, SRTM has the best performance under the plain surface coverage with an average error of 3.15 m, and AW3D30 DEM has the best performance under the mountainous surface coverage with an average error of 7.61 m.③The influence of slope on the elevation accuracy of DEM data is large, and the elevation error of three kinds of DEM data in two study areas increases with the increase of slope; the influence of slope direction on the elevation accuracy of DEM data is small, and no obvious pattern is found.

Key words: elevation accuracy, error distribution, ICESat-2 ATL08, ASTER GDEMV3, AW3D30 DEM, SRTM1 DEM

中图分类号:

P237

丁夏萌, 张继贤, 郭婧, 张鹤, 常亚茹. 基于ICESat-2 ATLAS数据的DEM高程精度评价[J]. 测绘通报, 2022, 0(12): 84-90.

DING Xiameng, ZHANG Jixian, GUO Jing, ZHANG He, CHANG Yaru. Vertical accuracy evaluation of DEM data based on ICESat-2 ATLAS[J]. Bulletin of Surveying and Mapping, 2022, 0(12): 84-90.

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基于ICESat-2 ATLAS数据的DEM高程精度评价

Vertical accuracy evaluation of DEM data based on ICESat-2 ATLAS

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