ashtech DG16 Reference Manual page 197

Table 6.74. UDG Structure for Transverse Mercator for SPC27
Field
f4 Longitude of Central meridian
f5 Degree, minute portion of the rectifying latitude
wo for Fo, latitude of origin
Remainder of wo
f6
f7 Scale along central meridian
f8
(1/6 * Rm * Nm * T5
Rm = radius of curvature in meridian plane
Nm = radius of curvature in prime vertical
Both are calculated for the mean latitude of the
area in the zone.
Table 6.75. UDG Structure for Transverse Mercator for SPC27 for Alaska
Parameters
s1
d2
f3
f4
Examples
Enter the following command to set datum to grid transformation parameters for
Lambert Conformal CA-zone 4:
$PASHS,UDG,LC83,6,360000.0,371500.0,-1190000.0,352000.0,
2000000,500000
Enter the following command to set datum to grid transformation parameters:
$PASHS,UDG,LC83,637 8240,297.323,121.4,18.9,0,0,0,1.5
Receiver Commands
Description
2 15
) * 10
Zones 2 through 9
Description
Map projection type
Number of parameters for the selected
projection
False Easting or x coordinate of central
meridian
Longitude of Central meridian
Range / Name
T2
T3
T4
T5
T6
Range / Name
TMA7
2
C
CM
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