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R60 Station
R60 User Manual
Version
Date
A1
2022-08-10
Page 54 (98)
6.6 Configure > GNSS
Settings for position and DGNSS are found by selecting the Configure base category
and then select the GNSS sub-category.
On this page settings are made for base station position source, surveyed position and
differential corrections.
6.6.1 Position
For proper operation and messaging the R60 unit must know its own location. These
settings determine the position that will be used and broadcast on the VDL in the base
station report message. The position can come from three different sources: surveyed,
internal or external.
As the Base Station is a static unit, usage of Surveyed Position is recommended. Always
verify accuracy of the position before applying. Internal or external can be used if the
position of the site has not been established.
The external option requires that the site is equipped with position information which
is connected to the base station.
The Position Source can also be selected to operate in a fall-back (redundancy)
solution, by selecting one of the following alternatives:
Int w/ Sur Fallback. Internal position source is the primary source, Surveyed
position is the fall-back alternative in case the R60 fails to get a position from
the internal source.
Int w/ Ext Fallback. Internal position source is the primary source, while an
Externally provided position is the fall-back alternative in case the R60 fails to
get a position from the internal source.
Ext w/ Sur Fallback. External position source is the primary source, Surveyed
position is the fall-back alternative in case the R60 fails to get a position from
the external source.
Ext w/ Int Fallback. External position source is the primary source, Internal
position is the fall-back alternative in case the R60 fails to get a position from
the external source.
If one of the above fall-back alternatives is selected the base station automatically
change to the fall-back source if the base station fails to get a position from the
primary source.
6.6.2 DGNSS
The R60 can send out DGNSS (Differential Global Navigation Satellite System)
messages using the AIS Message 17, to be used by any vessels listening to the VDL. For
this to be possible the R60 needs DGNSS corrections.