Digital Elevation Models (DEM) represent the exact data on Earth's surface elevation except for objects of vegetation cover and anthropogenic objects.
Based on DEM, one can fast create a series of thematic maps of major morphometric indicators: hypsometrical map, steepness maps and slopes exposures, etc. Digital Terrain Models (DTM) contain information on the elevation of ground surface, including buildings, vegetation and other high-rise objects.
CRS & GIS “Terra” performs a complex of works to create digital elevation models and 3-D modeling. Also, the Company delivers global digital elevation models: WorldDEM, NextMap, AW3D, SRTM and AsterDEM.