Viva Series, Coordinate Systems 149
8 Coordinate Systems
8.1 Overview
Description A coordinate system
• consists of up to five elements.
• allows the conversion from WGS 1984 geodetic or cartesian coordinates to, local carte-
sian, geodetic or grid coordinates and back.
• can be attached to jobs.
• can be manually defined.
• can be computed in the field.
• can be directly received from a reference network. Refer to "18.7.1 Configuration of a
Rover Real-Time Connection".
• can be downloaded to LGO.
• can be uploaded from LGO.
Using coordinate
systems on TPS
Coordinate systems are used on TPS instruments to combine GPS data with TPS data.
)
An attached coordinate system is not used to reduce any measured distance on a TPS
instrument.
)
All GPS surveyed points are always stored as WGS 1984 geodetic coordinates regardless of
the coordinate system being used. Using a different coordinate system converts the coor-
dinates displayed on the screen, but does not convert and restore the coordinate values in
the database DB-X.
)
Points surveyed with a TPS instrument are always stored in local GRID coordinates
regardless of the coordinate system being used.
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