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8 RTK Mapping
B Tip
C
Note – Although local coordinates can be keyed in for the reference
positions, these are transformed by the field software to be in terms of
WGS-84. If accurate WGS-84 coordinates are available, then you can
use these in preference to local coordinate values.
– In the U.S., NAD83 coordinates are equivalent to WGS-84
coordinates.
Warning – Although you can use an autonomous position generated by
the receiver, this is a very inaccurate method. Only use it if the data to be
collected is contained within a small area and the data does not need to
be tied in or referenced to an existing set of data.
8.3.2 Equipment Setup and Use
With the RTK system, the way you set up and use the equipment can
have significant effects on the reliability of the data being collected.
This section describes the equipment you need and shows you how to
set it up. Setting up of both the base station and rover is very similar.
For trouble-free hardware integration, use the diagrams provided.
They show you how to connect the GPS receivers, a TSC1 datalogger,
the batteries, and radios.
Note – If you are using a mix of Series 4000 and 4400 receivers,
Trimble recommends that you use the Series 4000 receiver as the base
receiver.
202 TSC1 Asset Surveyor Operation Manual