Digital terrain model DTM

A Digital Terrain Model (DTM) is a highly accurate 3D representation of the Earth's bare surface, capturing terrain elevations without buildings, vegetation, or other above-ground features. Generated using remote sensing technologies such as LiDAR, photogrammetry, and satellite imagery, DTMs provide essential elevation data for mapping, land analysis, and geospatial applications. They help professionals understand terrain characteristics, including slope, aspect, drainage patterns, and landform structures.