干旱区生态环境知识资源中心(Arid): A Relief Dependent Evaluation of Digital Elevation Models on Different Scales for Northern Chile

Arid

DOI	10.3390/ijgi8100430
	A Relief Dependent Evaluation of Digital Elevation Models on Different Scales for Northern Chile
	Kramm, Tanja; Hoffmeister, Dirk
通讯作者	Hoffmeister, Dirk
来源期刊	ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
EISSN	2220-9964
出版年	2019
卷号	8 期号:10
英文摘要	Many geoscientific computations are directly influenced by the resolution and accuracy of digital elevation models (DEMs). Therefore, knowledge about the accuracy of DEMs is essential to avoid misleading results. In this study, a comprehensive evaluation of the vertical accuracy of globally available DEMs from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), Shuttle Radar Topography Mission (SRTM), Advanced Land Observing Satellite (ALOS) World 3D and TanDEM-X WorldDEM (TM) was conducted for a large region in Northern Chile. Additionally, several very high-resolution DEM datasets were derived from Satellite Pour l'Observation de la Terre (SPOT) 6/7 and Pleiades stereo satellite imagery for smaller areas. All datasets were evaluated with three reference datasets, namely elevation points from both Ice, Cloud, and land Elevation (ICESat) satellites, as well as very accurate high-resolution elevation data derived by unmanned aerial vehicle (UAV)-based photogrammetry and terrestrial laser scanning (TLS). The accuracy was also evaluated with regard to the existing relief by relating the accuracy results to slope, terrain ruggedness index (TRI) and topographic position index (TPI). For all datasets with global availability, the highest overall accuracies are reached by TanDEM-X WorldDEM (TM) and the lowest by ASTER Global DEM (GDEM). On the local scale, Pleiades DEMs showed a slightly higher accuracy as SPOT imagery. Generally, accuracy highly depends on topography and the error is rising up to four times for high resolution DEMs and up to eight times for low-resolution DEMs in steeply sloped terrain compared to flat landscapes.
英文关键词	accuracy assessment digital terrain model stereo satellite imagery topography terrestrial laser scanning topographic position index terrain ruggedness index unmanned aerial vehicles
类型	Article
语种	英语
国家	Germany
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000498398300005
WOS关键词	ASTER GDEM V2 ; TANDEM-X ; ACCURACY ASSESSMENT ; VERTICAL ACCURACY ; ATACAMA DESERT ; DEM RESOLUTION ; TOPOGRAPHIC POSITION ; LOESS PLATEAU ; SRTM ; VALIDATION
WOS类目	Computer Science, Information Systems ; Geography, Physical ; Remote Sensing
WOS研究方向	Computer Science ; Physical Geography ; Remote Sensing
EI主题词	2019-10-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310154
作者单位	Univ Cologne, Inst Geog, GIS & Remote Sensing, Albertus Magnus Pl, D-50923 Cologne, Germany
推荐引用方式 GB/T 7714	Kramm, Tanja,Hoffmeister, Dirk. A Relief Dependent Evaluation of Digital Elevation Models on Different Scales for Northern Chile[J],2019,8(10).
APA	Kramm, Tanja,&Hoffmeister, Dirk.(2019).A Relief Dependent Evaluation of Digital Elevation Models on Different Scales for Northern Chile.ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION,8(10).
MLA	Kramm, Tanja,et al."A Relief Dependent Evaluation of Digital Elevation Models on Different Scales for Northern Chile".ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION 8.10(2019).