Digital Terrain Model

By Author: SEO EXECUTIVE
Total Articles: 11
Comment this article

Digital Terrain Model (DTM) is a bare earth model that is generated using stereo pair of imageries. Such models become an integral part of topographic surveys. These models are also used to generate contour maps. Such models are the best depiction of slopes and aspects.

Digital Terrain Models (DTM) sometimes called Digital Elevation Models (DEM) is a topographic model of the bare Earth that can be manipulated by computer programs. The data files contain the elevation data of the terrain in a digital format that relates to a rectangular grid. Vegetation, buildings, and other cultural features are removed digitally – leaving just the underlying terrain.

How the product is unique?

Next-generation global 3D terrain datasets
Seamless data up to sub-meter post spacing
Precise topographic analysis
Comprehensive worldwide offering
Hydro-enforced – water bodies and coastlines are flattened for accurate measurement
Vintage: most recent or new collected imagery
File format: GeoTIFF or other formats on request
Post Spacing: 50cm to 10m

Inputs Required

Stereo remote sensing imagery
Ground Control Points (GCPs).
Contours
Triangulate Irregular Network (TI