![]() Global Aster Demĭespite its high spatial resolution and greater coverage (80% of the Earth), users were dissatisfied with it because of its artifacts, which often occurred in cloudy areas. ASTER GDEM boasted a global resolution of 90 meters with a resolution of 30 meters in the United States. 2 ASTER Global Digital Elevation Model A joint operation between NASA and Japan was the birth of Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER). Under the data sets tab, select Digital Elevation > SRTM > SRTM 1-ArcSecond Global. To download, select your area of interest. Where can you download the SRTM data? SRTM DEM data is being housed on the. This 1-arc second global digital elevation model has a spatial resolution of about 30 meters covering most of the world with absolute vertical height accuracy of less than 16m. In late 2014, the highest possible resolution SRTM data was released to the public. As part of ASTER digital elevation model. ACCURACY COMPARISON OF THE SRTM, ASTER, NED, NEXTMAP® USA DIGITAL TERRAIN MODEL OVER SEVERAL USA STUDY SITES. ASTER Global Digital Elevation Model Version 2 – Summary of Validation Results Augby the ASTER GDEM Validation Team, with contributions.
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