ASTERGTM - Global Digital Elevation Model

ASTER is capable of collecting in-track stereo using nadir- and aft-looking near infrared cameras. Since 2001, these stereo pairs have been used to produce single-scene (60- x 60-kilomenter (km)) digital elevation models (DEM) having vertical (root-mean-squared-error) accuracies generally between 10- and 25-meters (m). The methodology used by Japan's Sensor Information Laboratory Corporation (SILC) to produce the ASTER GDEM involves automated processing of the entire ASTER Level-1A archive. Stereo-correlation is used to produce over one million individual scene-based ASTER DEMs, to which cloud masking is applied to remove cloudy pixels. All cloud-screened DEMS are stacked and residual bad values and outliers...

Tags: ASTER, Advanced Spaceborne Thermal Emission and Reflection Radiometer , DEM , Digital Elevation Model, GDEM, All tags... Global Digital Elevation Model , Japan’s Ministry of Economy, Trade, and Industry , LP DAAC, Land Processes Distributed Active Archive Center , METI, NASA, NPLCC, U.S. National Aeronautics and Space Administration , United States Geological Survey, nadir, usgs, Fewer tags