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Command/Response Formats 223
Commands
The following SPC27 map projections must be used in conjunction with the Clark
1866 ellipsoid (a = 6378206.4 m and 1/f = 294.978698200) and the following datum
(Tx = -8.0, Ty = 160.0, Tz= 176.0, rotation and scale = 0) which is included in the
preset datum list as NAC.
Table 6.157: UDG Structure for Stereographic (Polar and Oblique)
Field Description Range Units
s1 Map projection type STER n/a
d2 Number of parameters for the selected projection 5 n/a
f3 Latitude of the grid origin of the projection ±900000.0000 ddmmss.ssss
f4 Longitude of the grid origin of the projection ±1800000.0000 ddmmss.ssss
f5 Scale factor at center of projection 0.5-1.5 n/a
f6 False Easting ±10,000,000 meters
f7 False Northing ±10,000,000 meters
Table 6.158: UDG Structure for Lambert Conformal Conic for SPC83
(2 standard parallels form)
Field Description Range Units
s1 Map projection type LC83 n/a
d2 Number of parameters for the selected projection 6 n/a
f3 Latitude of Southern Standard parallel ±900000.0000 ddmmss.ssss
f4 Latitude of Northern Standard parallel ±900000.0000 ddmmss.ssss
f5 Longitude of the grid origin of the projection ±1800000.0000 ddmmss.ssss
f6 Latitude of the grid origin of the projection ±900000.0000 ddmmss.sss
f7 False Easting ±10,000,000 meters
f8 False Northing ±10,000,000 meters
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