Knowledge Resource Center for Ecological Environment in Arid Area
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). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。