Seatex DPS 132 Installation Manual, rev. 0 Installation
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DCLNK2 NAME LINK 2
Link names can also be edited in the setup file. The link
names will be displayed in the TMS display together with
the link status indicator.
DCLNK1 SHORT RANGE 1
Some of the reference stations do not transmit/broadcast
their station co-ordinates (i.e. IALA stations). If the
system does not receive the station co-ordinates, they are
given a default range of 10 000 km and are hence given a
low weight in the position solution. However, if the link
is set up as a short-range link, the station will be used in a
correct manner in the position solution.
Note Link 1 is reserved for IALA Beacon corrections.
Note Links 2 through 5 are reserved for Fugro corrections.
Note Link 6 is reserved for Thales corrections.
3.9.12 Handling of corrections
It is possible to define a link as "ionospheric free". This is achieved by utilising dual
frequency GPS receivers on both the reference station and the mobile station. Fugro Seastar
offers DGPS corrections where the ionospheric contribution is removed. To treat these
corrections correctly in a multireference solution, a different weight than other DGPS
corrections is required.
DCLNK1 IONOSPHERE COMPENSATED 0
This line indicates that the differential link
connected to the DCLNK1 (Differential
Correction Link 1) port is of a type where
ionosphere error contributions, both at reference
station and at mobile station, have been
compensated. Data from this type of links need
special treatment in the software weight
algorithms.
3.9.13 Offsets in reference station co-ordinates
Corrections distributed from some reference stations are based on a different geographical
datum than WGS 84, which is used by the GPS satellites. The position error at these reference
stations will lead to an equivalent error in the mobile position. A feature for compensation of
errors in DGPS reference station co-ordinates is implemented.
DCLNK1 REF STATION OFFSET 0.0 0.0 0.0
This line makes it possible to correct for
position errors/offsets in reference stations'
positions for stations received on DCLNK1. The
offsets, in metres, are respectively north/south,
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