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Indonesia has various DEM from many sources and various acquisition date spreaded in the past two decades. There are DEM fromspaceborne system (Radarsat, TerraSAR-X, ALOS, ASTER-GDEM, SRTM), airborne system (IFSAR, Lidar, aerial photos) and alsoterrestrial one. The research objective is the quality test and how to extract best DEM in particular area. The method is usingdifferential GPS levelling using geodetic GPS equipment on places which is ensured not changed during past 20 years. The resulthas shown that DEM from TerraSAR-X and SRTM30 have the best quality (rmse 3.1 m and 3.5 m respectively). Based on thisresearch, it was inferred that these parameters are still positively correlated with the basic concept, namely that the lower and thehigher the spatial resolution of a DEM data, the more imprecise the resulting vertical height

the international archives of the photogrammetry, remote sensing and spatial information sciences/international archives of the photogrammetry, remote sensing and spatial information sciences

QUALITY TEST VARIOUS EXISTING DEM IN INDONESIA TOWARD 10 METER NATIONAL DEM