Spectra-precision Survey Pro v3.80 Recon GPS User Manual Instrukcja Użytkownika Pobierz pdf (Strona 42)

GPS User’s Manual

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

Select horizontal and vertical projection methods on the

Projection

card of the Job, Settings screen.

Configure the hardware and set up the base and rover

receivers.

Take GPS measurements to a minimum of two horizontal

control points, and either one vertical control point (to

calculate shift for geoid model) or three vertical control points

(to calculate an inclined plane).

Go to Projection

from the Survey menu. Tap

Select the points to use for horizontal and vertical control and

tap .

Verify solution residual or misclosure quality. Tap to

review the parameters and tap to finish setup.

Occupy additional local points as check points to verify

solution quality. If desired, additional points can be added as

control points and included in solution.

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Spectra-precision Survey Pro v3.80 Recon GPS User Manual Instrukcja Użytkownika Strona 42