Spectra Precision Survey Pro v4.6 Recon and Nomad User Manual - Manual (Page 304)

User’s Manual – GPS Mode
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• The coordinate system has its origin at the local northing and
easting of the first base position. The localization Translation
values would be the offset between the default map projection’s
origin (100000, 100000)m and the local coordinate of the base.
Localization Calculator
Note: The Localization calculator is used to provide the field
procedure for a workflow supported in Survey Pro versions prior to
3.5. This routine is similar to using the Start GPS Survey wizard one
point setup mode, except that rotation is calculated parallel to a
selected map projection.
1. After choosing the projection settings and configuring the base
and rover receivers, go to the Survey > Projection screen.
2. Tap Solve Localization… to open the Solve Localization wizard and
then tap Calculator>.
Note: The vertical card will be the vertical manual parameter screen
described in the previous section.
3. Leave the scale at 1.0. For an explanation of the scale factor or to
review the reference height used for ground scale, tap the
Calc Scale button.
4. Calculate the rotation for this setup. Tap Calc. Rotation to open
the Localization Calculator. If you have not already selected a
mapping plane, you will be prompted to do so now.
5. Tap Solve Rotation> to calculate rotation for the localization
origin in the selected map projection zone.
6. Examine the results. The Rotation is the negative of meridian
convergence between the central meridian of the selected map
projection zone and the base point.
7. If you set your base up on a known point, then the base station
coordinates are already entered into the Base Station Local
Coordinate
fields. Tap Solve> to calculate the localization