A Field Investigation of DTED Suitability for Line-of-Sight (LOS) applications
ARMY TOPOGRAPHIC ENGINEERING CENTER FORT BELVOIR VA
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Recent advance in weapon systems and combat simulators have increased the need for higher resolution data for terrain appreciation and three prediction applications. To date, the Defense Mapping Agencys DMA Digital Terrain Elevation Data DTED Level 1 database, an elevation matrix with 3 arc second or 100-meter post spacing, has been used by most military and Department of DefenseDOD users when elevation data was required for modeling, simulations or other applications. The advent of the Tactical Terrain Data TTD prototype and its corresponding DTED Level 2 cell 1 arc second spacing or 30-meter post spacing has afforded joint service users a unique opportunity to compare the two databases in terms of their uses for relevent applications, especially line-of-sight LOS. A major aspect of the Armys evaluation of the TTD prototype involved a comprehensive comparison of DTED Level 1 vs. Level 2 conducted by the Digital Concepts and Analysis Center DCAC at the United States Army Topographic Engineering Center TEC Fort Belvoir, VA and the prototype study area Fort Hood, TX.
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