ashtech DG16 - UCT,UG4,EST: Estimating a Grid Transformation

Receiver Commands 169
Receiver Commands
$PASHR,UCT,UG4,CAL,f1,f2,f3,f4,f5,f6,f7,f8
The response is in the format
$PASHR,UCT,UG4,CAL,f1,f2,f3,f4,f5,f6,f7,f8
where Table 6.64 outlines the response parameters.
UCT,UG4,EST: Estimating a Grid Transformation
$PASHS,UCT,UG4,EST
This commands indicates the start of a sequence of entering points for estimating
parameters in a user-defined Grid transformation.
UD4: User-Defined Datum to Datum Parameters
$PASHS,UD4,d1,f1,f2,f3,f4
This command sets the parameters for a 2-D datum to datum transformation. Table
6.65 defines the parameters.
Table 6.64. $PASHR,UCT,UG4,CAL Response Parameters
Parameter Description Range
f1 Displacement easting (meters) ±9999999.99
f2 Displacement northing (meters) ±9999999.99
f3 Rotation in z axis (seconds)
f4 Delta Scale factor (scale factor - 1.0).
(ppm)
f5 Sigma easting in “known” projection 0
f6 Sigma northing in “known” projection 0
f7 Sigma easting in local grid system 0
f8 Sigma northing in local grid system 0
Table 6.65. $PASHS,UD4 Parameters
Parameter Definition Range
d1 Base System 0 = WGS-84
1 = PZ-90
f1 Translation 1 -1000 to 1000
f2 Translation 2 -1000 to 1000