performance specification digital terrain elevation data
performance specification digital terrain elevation data performance specification digital terrain elevation data
MIL-PRF-89020BDTED+< H lll >(1, R)< Hjj ·DT1 >(1, D)UHL record+DSI record+ACC record+elevation profiles(1,E)GAZETTE+GAZETTE·DIR(1,1)GAZETTE·Key(1,1)(1,G)· GAZ(1,N)· HSHdesignation code+latitude+longitude+place nameDMED·+TEXTMBR+DMED Cell(1,T)ONC·DIRREAD·MESW latitude+SW longitude+Data edition+Match/mergeversion+15' Quad(1,16)min e+max e+mean e+std dev eΗλλλ- hemisphere (E or W) and longitudeΗϕϕ - hemisphere (N or S) and latitudeΡ - number of 1° cell columns within the disc, a multiple of 6∆ - number of 1° DTED cells within the columns, a multiple of 6E - number of profiles per cell (latitude zone dependent,1201 elevations per profile)G - number of country/region gazettes on the discN - number of place names within the country/region gazetteT - total number of 1° cells on disc = P x D , a multiple of 6FIGURE 1. DTED Level 1 CD-ROM logical data file structure.40
MIL-PRF-89020BPARAGRAPH PAGEAccuracy...................................................3.3 3Accuracy...................................................6.4.1 37Accuracy description record (ACC)..........................3.13.5 33Accuracy sub region description............................3.13.5.1 34Acquisition requirements...................................6.2 37Adjacent one-degree data files.............................3.5.2 4APPLICABLE DOCUMENTS.......................................2. 1Below mean sea level.......................................3.5.3.3 5CD-ROM characteristics.....................................3.6.1.1 5CD labeling................................................3.10.7.3.1 12CD-ROM content.............................................3.10.7.1 12CD-ROM labeling............................................3.16 36CD-ROM labeling and packaging..............................3.10.7.3 12Cell.......................................................6.4.2 37Change from previous issue.................................6.7 39Circular error.............................................6.4.3 37Classification.............................................1.3 1Classification of inspection...............................4.1 36Conformance inspection.....................................4.3 36Copyright..................................................3.15 35Data block checksum........................................3.10.6 12Data file structure........................................3.10.1 11Data record characteristics................................3.11 14Data record sequence.......................................3.10.5 12Data Set Identification (DSI) Record.......................3.13.4 31Data value sequence........................................3.10.4 11Datum......................................................3.2 3Definitions................................................6.4 37Description of record contents.............................3.12 19Directories................................................3.10.7.2 12DMED file..................................................3.9.5 9Double line drains.........................................3.5.3.1.2 5DTED.......................................................6.4.4 37DTED File descriptions on CD-ROM or the GATEWAY............3.9 7DTED files.................................................3.10.7.4 13DTED Level 0...............................................3.5.4 5DTED Level 1...............................................3.5.5 5DTED Level 1 Accuracy......................................3.3.1 4DTED Level 2...............................................3.5.6 5DTED Level 2 Accuracy......................................3.3.2 4DTED on Compact Disc-Read Only Memory (CD-ROM).............3.10.7 12DTED Surface Characteristics...............................3.5.3 5Eight Millimeter (8mm) Tape................................3.6.2.2 6Evaluation values..........................................3.11.2 15Examination................................................4.3.1 36Explanation of record and fields (DTED)....................3.13 31Fields (DSI)...............................................3.13.4.1 32Fields (UHL)...............................................3.13.3.1 31File header label (HDR)....................................3.13.2 31Files extent...............................................3.10.2 11First article..............................................3.1 3First article inspection...................................4.2 36Flattened water bodies.....................................3.5.3.1.1 5Gazetteer directory........................................3.9.6.1 1041
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MIL-PRF-89020BDTED+< H lll >(1, R)< Hjj ·DT1 >(1, D)UHL record+DSI record+ACC record+<strong>elevation</strong> profiles(1,E)GAZETTE+GAZETTE·DIR(1,1)GAZETTE·Key(1,1)(1,G)· GAZ(1,N)· HSHdesignation code+latitude+longitude+place nameDMED·+TEXTMBR+DMED Cell(1,T)ONC·DIRREAD·MESW latitude+SW longitude+Data edition+Match/mergeversion+15' Quad(1,16)min e+max e+mean e+std dev eΗλλλ- hemisphere (E or W) and longitudeΗϕϕ - hemisphere (N or S) and latitudeΡ - number of 1° cell columns within the disc, a multiple of 6∆ - number of 1° DTED cells within the columns, a multiple of 6E - number of profiles per cell (latitude zone dependent,1201 <strong>elevation</strong>s per profile)G - number of country/region gazettes on the discN - number of place names within the country/region gazetteT - total number of 1° cells on disc = P x D , a multiple of 6FIGURE 1. DTED Level 1 CD-ROM logical <strong>data</strong> file structure.40
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