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 National Geospatial-Intelligence Agency (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 approximately 900 meters.
Level 1 has a post spacing of approximately 90 meters.
Level 2 has a post spacing of approximately 30 meters.
The precise spacing is defined by dividing the world into zones based on latitude, and is given in the following table:
zone
latitude range
level 0 (arc secs)
level 1 (arc secs)
level 2 (arc secs)
latitude spacing
all
30
3
1
longitude spacing
I
0°–50° (North–South)
30
3
1
II
50°–70° (North–South)
60
6
2
III
70°–75° (North–South)
90
9
3
IV
75°–80° (North–South)
120
12
4
V
80°–90° (North–South)
180
18
6
In addition three more levels (3, 4 and 5) at increasing resolution have been proposed, but not yet standardized.
^"Defining mean sea level in military simulations with DTED". Dl.acm.org. 2009-03-22. Retrieved 2016-01-31.
External linksedit
FAS: Digital Terrain Elevation Data [DTED]
DTED specification
MATLAB has in its Mapping toolbox a function for reading DTED files: documentation
December 04, 2023
dted, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, january, 2016, learn,. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources DTED news newspapers books scholar JSTOR January 2016 Learn how and when to remove this template message DTED or Digital Terrain Elevation Data is a standard of digital datasets which consists of a matrix of terrain elevation values i e a Digital Elevation Model This standard was originally developed in the 1970s to support aircraft radar simulation and prediction Terrain elevations are described as the height above the Earth Gravitational Model 1996 EGM96 geoid not the WGS84 reference ellipsoid 1 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 National Geospatial Intelligence Agency 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 approximately 900 meters Level 1 has a post spacing of approximately 90 meters Level 2 has a post spacing of approximately 30 meters The precise spacing is defined by dividing the world into zones based on latitude and is given in the following table zone latitude range level 0 arc secs level 1 arc secs level 2 arc secs latitude spacing all 30 3 1longitude spacing I 0 50 North South 30 3 1II 50 70 North South 60 6 2III 70 75 North South 90 9 3IV 75 80 North South 120 12 4V 80 90 North South 180 18 6In addition three more levels 3 4 and 5 at increasing resolution have been proposed but not yet standardized DTED data is stored in a big endian format where negative numbers are signed magnitude References edit Defining mean sea level in military simulations with DTED Dl acm org 2009 03 22 Retrieved 2016 01 31 External links editFAS Digital Terrain Elevation Data DTED DTED at National Geospatial Intelligence Agency website DTED specification MATLAB has in its Mapping toolbox a function for reading DTED files source code documentation Retrieved from https en wikipedia org w index php title DTED amp oldid 1149344545, wikipedia, wiki, book, books, library,
