<trans-title>Error Comparison among the DEM Datasets Made from ZY-3 Satellite and the Global Open Datasets</trans-title>

Shangmin ZHAO; Weiming CHENG; Jingtian JIANG; Wenjuan SHA

doi:10.12082/dqxxkx.2020.190658

Journal of Geo-information Science, Volume. 22, Issue 3, 370(2020)

Error Comparison among the DEM Datasets Made from ZY-3 Satellite and the Global Open Datasets

Shangmin ZHAO1...1,*, Weiming CHENG2,2, Jingtian JIANG3,3, and Wenjuan SHA44 |Show fewer author(s)

¹Department of Surveying and Mapping, College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China

¹太原理工大学矿业工程学院测绘科学与技术系,太原 030024

²State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences, Beijing 100101, China

²中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室,北京 100101

³Eastern General Aero photography Company Limited, Taiyuan 030031, China

³东方通用航空摄影有限公司,太原 030031

⁴Suzhou Image Sky International Company Limited, Suzhou 215163, China

⁴苏州中科天启遥感科技有限公司,苏州 215163

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Fig. 1. Relief map of the research area of Taiyuan city

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Fig. 2. Diagram of computation method ofthe relative error between referencing DEM and other DEM data

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Fig. 3. Pixel number distribution of the absolute error values at different numerical ranges for the four DEM datasets

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Fig. 4. Computation resultsof the relative error for the four DEM datasets

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Table 1. Brief Introduction to the DEM datasets in this research

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Table 1. Brief Introduction to the DEM datasets in this research

DEM数据	空间分辨率/m	精度*/m	获取时间/年	覆盖范围
参考DEM	5	0.15	2014	太原市及周边地区
资源三号DEM	5	8	2019	南北纬84°之间
AW3D30 DEM	30	3.4	2006—2011	南北纬82°之间
SRTM1 DEM	30	9	2000	南北纬60°之间
ASTER GDEM	30	12.6	2000—2009	南北纬83°之间

Table 2. ME, MAE, RMSE and STD values of theabsolute error for the four DEM datasets at different slope classes (m)

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Table 2. ME, MAE, RMSE and STD values of theabsolute error for the four DEM datasets at different slope classes (m)

DEM数据	坡度/°	0~2	2~7	7~15	15~25	25~35	>35
DEM数据	（控制点数量/个）	（45 259）	（37 131）	（16 301）	（37 594）	（22 065）	（23 936）
ME	资源三号DEM	1.5	1.1	0.7	1.0	1.2	1.3
	AW3D30 DEM	2.3	1.8	1.2	4.6	2.1	3.0
	SRTM1 DEM	1.1	1.0	0.1	-0.0	0.4	1.3
	ASTER GDEM V3	1.0	-0.0	-0.7	0.4	1.8	3.3
MAE	资源三号DEM	2.3	2.3	2.5	2.9	3.3	3.9
	AW3D30 DEM	3.1	2.7	2.8	3.6	4.4	5.6
	SRTM1 DEM	2.5	3.5	5.4	6.8	8.0	10.1
	ASTER GDEM V3	7.0	7.1	8.6	9.9	11.3	12.6
RMSE	资源三号DEM	3.7	3.7	4.1	4.6	6.0	5.9
	AW3D30 DEM	5.5	4.4	4.1	4.9	6.2	8.3
	SRTM1 DEM	3.8	5.5	7.6	9.2	10.9	15.4
	ASTER GDEM V3	9.5	9.7	11.4	13.0	14.9	18.4
STD	资源三号DEM	3.4	3.5	4.1	4.5	5.9	5.7
	AW3D30 DEM	5.0	4.1	3.9	4.6	5.8	7.8
	SRTM1 DEM	3.6	5.5	7.6	9.2	10.9	15.3
	ASTER GDEM V3	9.5	9.7	11.4	13.0	14.7	18.1

Table 3. MAEand RMSE values of the relative errorfor the four DEM datasets at different slope classes (%)

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Table 3. MAEand RMSE values of the relative errorfor the four DEM datasets at different slope classes (%)

DEM数据	坡度/°	0~2	2~7	7~15	15~25	25~35	>35
DEM数据	（点对数量/对）	（198 276）	（119 526）	（87 624）	（121 341）	（118 908）	（80 882）
MAE	资源三号DEM	1.8	2.1	2.8	3.1	3.5	4.2
	AW3D30 DEM	2.3	2.5	3.2	3.9	4.6	6.0
	SRTM1 DEM	2.2	3.5	6.0	7.4	8.7	11.2
	ASTER GDEM V3	5.6	6.3	8.2	9.8	11.4	13.6
RMSE	资源三号DEM	3.2	3.6	4.3	5.2	5.9	6.3
	AW3D30 DEM	4.4	4.2	4.6	5.3	6.4	8.8
	SRTM1 DEM	3.5	5.8	8.6	10.1	11.9	16.3
	ASTER GDEM V3	7.7	8.7	11.1	13.0	15.0	18.5

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Shangmin ZHAO, Weiming CHENG, Jingtian JIANG, Wenjuan SHA. Error Comparison among the DEM Datasets Made from ZY-3 Satellite and the Global Open Datasets[J]. Journal of Geo-information Science, 2020, 22(3): 370

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Paper Information

Received: Nov. 5, 2019

Accepted: --

Published Online: Sep. 16, 2020

The Author Email: ZHAO Shangmin (zhaoshangmin@tyut.edu.cn)

DOI:10.12082/dqxxkx.2020.190658

Topics

Resource Economy

Research Articles

Table 1. Brief Introduction to the DEM datasets in this research

Table 1. Brief Introduction to the DEM datasets in this research

Table 2. ME, MAE, RMSE and STD values of theabsolute error for the four DEM datasets at different slope classes (m)

Table 2. ME, MAE, RMSE and STD values of theabsolute error for the four DEM datasets at different slope classes (m)

Table 3. MAEand RMSE values of the relative errorfor the four DEM datasets at different slope classes (%)

Table 3. MAEand RMSE values of the relative errorfor the four DEM datasets at different slope classes (%)

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