performance specification digital terrain elevation data
performance specification digital terrain elevation data performance specification digital terrain elevation data
MIL-PRF-89020BTable V. TCD_DTED128 CD-ROMFile Structure Diagram - DTED Level 1 Example3.11.4 The .avg, .min and .max Data Record Characteristics. Allelevation values are Motorola format binary integers, right justified, 16 bits(2 bytes) and similar to the DTED Level 1 and 2 layout. A count of 121 is forcomplete DTED Level 0 cells between latitudes of 50 ° S and 50° N (See Table1). The average, minimum and maximum values are referenced to the centrallocation of the DTED Level 1 (30" x 30") subcell so that a direct comparisoncan be made back to the DTED Level 0 data.3.11.4.1 The .avg, .min, and .max data values. The algorithmcalculates the .min (minimum), .max (maximum) and average value for the entiresubcell (including the elevation values contained in the adjacent rows andcolumns of adjacent subcells).16
MIL-PRF-89020BTABLE VI. Magnetic Tape File Structure diagram-Terrain example.________________________________________________________________________FOUR 1° CELLS12' LONGITUDE SPACING(NON STANDARD)________________________________________________________________________DATA DATA DATA DATASTRUCTURE STRUCTURE STRUCTURE STRUCTURESEQUENCE TYPE SEQUENCE TYPE1 VOL 1 32 HDR 12 HDR 1 33 UHL 1 31°N, 40°W3 UHL 1 30°N, 40°W 34 *4 * 35 DSI5 DSI 36 ACC6 ACC 37 Data Record 127 Data Record 1 38 Data Record 138 Data Record 2 39 Data Record 149 Data Record 3 40 Data Record 1510 Data Record 4 41 Data Record 1611 Data Record 5 42 Data Record 1712 Data Record 6 43 *13 * 44 EOF 114 EOF 1 45 UTL 115 UTL 1 46 *16 * 47 HDR 117 HDR 1 48 UHL 1 31°N, 39°W18 UHL 1 30°N, 39°W 49 *19 * 50 DSI20 DSI 51 ACC21 ACC 52 Data Record 1722 Data Record 6 53 Data Record 1823 Data Record 7 54 Data Record 1924 Data Record 8 55 Data Record 2025 Data Record 9 56 Data Record 2126 Data Record 10 57 Data Record 2227 Data Record 11 58 *28 * 59 EOF 129 EOF 1 60 UTL 130 UTL 1 61 *31 * 62 *________________________________________________________________________Note: * = Tape Mark17
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MIL-PRF-89020BTABLE VI. Magnetic Tape File Structure diagram-Terrain example.________________________________________________________________________FOUR 1° CELLS12' LONGITUDE SPACING(NON STANDARD)________________________________________________________________________DATA DATA DATA DATASTRUCTURE STRUCTURE STRUCTURE STRUCTURESEQUENCE TYPE SEQUENCE TYPE1 VOL 1 32 HDR 12 HDR 1 33 UHL 1 31°N, 40°W3 UHL 1 30°N, 40°W 34 *4 * 35 DSI5 DSI 36 ACC6 ACC 37 Data Record 127 Data Record 1 38 Data Record 138 Data Record 2 39 Data Record 149 Data Record 3 40 Data Record 1510 Data Record 4 41 Data Record 1611 Data Record 5 42 Data Record 1712 Data Record 6 43 *13 * 44 EOF 114 EOF 1 45 UTL 115 UTL 1 46 *16 * 47 HDR 117 HDR 1 48 UHL 1 31°N, 39°W18 UHL 1 30°N, 39°W 49 *19 * 50 DSI20 DSI 51 ACC21 ACC 52 Data Record 1722 Data Record 6 53 Data Record 1823 Data Record 7 54 Data Record 1924 Data Record 8 55 Data Record 2025 Data Record 9 56 Data Record 2126 Data Record 10 57 Data Record 2227 Data Record 11 58 *28 * 59 EOF 129 EOF 1 60 UTL 130 UTL 1 61 *31 * 62 *________________________________________________________________________Note: * = Tape Mark17
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