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- Title
QUALITY TEST VARIOUS EXISTING DEM IN INDONESIA TOWARD 10 METER NATIONAL DEM.
- Authors
Amhar, Fahmi
- Abstract
Indonesia has various DEM from many sources and various acquisition date spreaded in the past two decades. There are DEM from spaceborne system (Radarsat, TerraSAR-X, ALOS, ASTER-GDEM, SRTM), airborne system (IFSAR, Lidar, aerial photos) and also terrestrial one. The research objective is the quality test and how to extract best DEM in particular area. The method is using differential GPS levelling using geodetic GPS equipment on places which is ensured not changed during past 20 years. The result has shown that DEM from TerraSAR-X and SRTM30 have the best quality (rmse 3.1 m and 3.5 m respectively). Based on this research, it was inferred that these parameters are still positively correlated with the basic concept, namely that the lower and the higher the spatial resolution of a DEM data, the more imprecise the resulting vertical height.
- Subjects
RISAT-1 (Radar imaging satellite); LIDAR
- Publication
International Archives of the Photogrammetry, Remote Sensing & Spatial Information Sciences, 2016, Vol 41, Issue B4, p111
- ISSN
1682-1750
- Publication type
Article
- DOI
10.5194/isprsarchives-XLI-B4-111-2016