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8.2.5 Data Collection
RTK Mapping 8
Trimble recommends that geoid models be applied when collecting
data over large sites, such as entire cities and towns, and in terrain that
undulates significantly. It is also useful to realize that Local Height
Adjustments can be applied relative to a geoid.
RTK data collection follows the same basic principles as standard
GPS data collection for GIS or Mapping applications, as described in
the Mapping Systems General Reference. RTK differs from standard
GIS data collection with respect to the techniques employed to collect
the positional component of a feature.
Collection techniques can be described in terms of two distinct
methods:
static
roving
These terms refer specifically to the way that the GPS antenna is being
physically supported and the way that the positions are being logged.
Static data collection
In the Asset Surveyor software, data can only be collected in static
mode for point features when Apply real-time is set to ‘Yes’ in the
Position filters form, and one of the following is true:
you are using a Series 4000 receiver and RTK mode is set to
‘On’
you are using a Site Surveyor 4400 receiver, GPS Total Station
4700, or GPS Total Station 4800, and Log RTK only is set to
‘Yes’
TSC1 Asset Surveyor Operation Manual 197