Spectra Precision Survey Pro CE v3.60 GPS User Manual - Manual (Page 39)

RTK Data Collection
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least squares solution using the control points. These parameters are
added to the zone record (selected map plane zone or default
Localization zone) to create a zone based site record.
Vertical Localizations, with or without a geoid model, uses the same
field procedure. Starting from an autonomous GPS base setup, you
measure GPS positions on control points with know local elevations.
The vertical adjustment parameters are calculated from the control
points. The vertical adjustment will be either a shift to correct geoid
elevations to local elevations, or an inclined plane to correct for
vertical shift and tilts.
Note: If you are starting a new job in Ground - TDS Localization
mode, you do not need control points. Simply set the base on your
first job file point and solve the projection at the prompt. For a more
detailed description of the easiest way to start a new job using Survey
Pro, see the section on One Point Localizations. See Page 46.
Localization with Control Points
Horizontal localization is a simple 2D similarity transformation from
mapping plane coordinates in an intermediate system to coordinates
in your local system. In
Ground - TDS Localization mode, the
intermediate system is the default map projection initialized for
ground distances at the base height. In
Mapping Plane mode, the
intermediate system is the inaccurate map projection calculated from
the autonomous GPS base.
Vertical localization is a correction from measured ellipsoid heights or
geoid elevations calculated from heights, into local elevations. This
correction can be a simple shift or a three-parameter inclined plane.
Localization with Control Points: Summary
¾ Select horizontal and vertical projection methods on the
Projection card of the Job, Settings screen.
¾ Configure the hardware and set up the base and rover
receivers.