Digital Elevation Models (DEMs)

Proprietary mapping technology creates superior DEMs

The high-quality 3D digital mapping data afforded by our proprietary airborne interferometric synthetic aperture radar (IFSAR) technology meet the demanding needs of a wide range of geospatial applications, such as base mapping, watershed analysis, image rectification, and line-of-sight analysis. Our IFSAR DEMs, collected as part of our NEXTMap® countrywide mapping program, are predominantly accurate to 1 vertical meter and include:


Digital surface model (DSM) - a first-reflective-surface model that contains cultural features such as buildings, roads, vegetation, and natural terrain features. The key benefit of the DSM is that it provides a geometrically correct base map.

Digital terrain model (DTM) - a bare-earth model in which cultural features such as buildings, roads, and vegetation canopy are digitally removed. Intermap has two versions of DTMs available — to learn more, see "DTM v1.0 & DTM v1.5" information. 

Intermap's DEMs are included in our NEXTMap countrywide mapping program that includes all of Western Europe, the contiguous United States and Hawaii, and much of Southeast Asia. 

Learn More

Read about our digital elevation models (PDF)

Listen to a free recording from our Introduction to Digital Elevation Models Webinar.