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'DTED' (or 'Digital Terrain Elevation Data') was originally developed in the 1970s to support aircraft radar simulation and prediction.
DTED supports many applications, including line-of-sight analyses, terrain profiling, 3-D terrain visualization, mission planning/rehearsal, and modeling and simulation. DTED is a standard NGA product that provides medium resolution, quantitative data in a digital format for military system applications that require terrain elevation.
The DTED format for level 0, 1 and 2 is described in ''U.S. Military Specification Digital Terrain Elevation Data (DTED) MIL-PRF-89020B'', and amongst other parameters describes the resolution for each level:

★ Level 0 has a post spacing of 30 arcseconds in latitude direction (ca. 900 meters)

★ Level 1 has a post spacing of 3 arcseconds (ca. 90 meters)

★ Level 2 has a post spacing of 1 arcseconds (ca. 30 meters)
In addition three more levels (3, 4 and 5) at increasing resolution have been proposed, but not yet standardized.

Contents

External links

External links

★ DTED at FAS.org

★ MIL-PRF-89020B — DTED specification