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4 Before Leaving the Office
4.11Getting Base Station Data
To record high accuracy data you must be able to differentially correct
your data. You need to locate a source of base station data or set up
your own base station. The base station is used to collect base data or
to output RTCM corrections for differentially correcting the positions
of the features that you observe with the roving receiver in the field.
Many organizations and universities operate active community base
stations for differential corrections from which you can obtain data.
However, to achieve C/A code submeter accuracy, the base station
must be another 12-channel Pro XR system, Pro XRS system,
12-channel Pro XL, 4600LS Surveyor, Site Surveyor 4400, GPS Total
Station 4700, GPS Total Station 4800, or Trimble Series 4000
receiver.
60 TSC1 Asset Surveyor Operation Manual