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RTK Mapping 8
8.4.3 Recording Less Accurate Positions if the RTK Radio Link
Fails
At some stage the radio link between your base station and rover may
fail, either because the batteries of the base station receiver or radio
are flat, or due to some interference in the signal. By default, no
positions are logged until the radio link is re-established.
However, if necessary, you can configure the rover to switch to
collecting less accurate positions (the same type of positions that you
would collect using a non-RTK receiver such as the GPS Pathfinder
Pro XR).
To let your roving receiver record positions when the radio link fails,
in the Real-time input form set the Choice 2 fieldto‘Useuncorrected
GPS’.
Note – RTK precision settings do not apply when Apply real-time is set
to ‘Auto’.
8.4.4 Recording Non-RTK Data Files
If you do not have access to an RTK base station, or do not want to
collect RTK quality positions, you can still collect data files using an
RTK receiver. The types of positions that you collect are the same as if
you were using a non-RTK receiver such as the Pro XR.
If your roving receiver has the RTCM option installed, you can record
real-time differentially corrected positions as long as you have a radio
link to an RTCM base station. If not, you can collect uncorrected
(autonomous) positions and differentially correct them in the GPS
Pathfinder Office software to obtain positions with submeter accuracy.
To collect real-time, differentially corrected positions, set the Choice 1
fieldintheReal-time input form to ‘External source’ and set the
Correction type fieldintheExternal source form to ‘RTCM’.
Note – The Trimble 4400, 4700, and 4800 receivers always send the
best available positions (that is, RTK positions will be sent if
available.)
TSC1 Asset Surveyor Operation Manual 225