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Accuracy Evaluation of ASTER DEM, SRTM DEM using Digital Topographic Map  

Kang, Kyung-Ho (연세대학교 사회환경시스템공학부)
Kim, Chang-Jae (연세대학교 사회환경시스템공학부)
Sohn, Hong-Gyoo (연세대학교 사회환경시스템공학부)
Lee, Won-Hee (서울대학교 건설환경공학부)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.28, no.1, 2010 , pp. 169-178 More about this Journal
Abstract
The main purpose of this study is to evaluate the feasibility and the accuracy of ASTER DEM and SRTM DEM covering 99% of the earth surface using large-scale Digital Topographic Map in mountainous area(Sokcho), mixed area(Jinan, mountainous area and even land area) and even land area(Anyang). We made DEM using contour lines of 1:5,000 Digital Topographic Map of study area and also acquired ASTER DEM and SRTM DEM of their corresponding area. In order to verify accuracy of DEM, this study compared ASTER DEM and SRTM DEM data using 15m resolution DEM generated from contour lines of Digital Topographic Map as basis for each study area. To evaluate the accuracy of ASTER and SRTM DEM data, statistical such as RMSE and correlation were calculated and histogram and scatter plot were drawn. The analysis result shows that, both ASTER DEM and SRTM DEM have high accuracy but in aspects of future availability, ASTER DEM covering larger areas bas relatively more potential than SRTM data.
Keywords
ASTER; SRTM; Digital Topographic Map; Digital Elevation Model; Resolution;
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