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Seapath 320
28
M300-62/rev.2
Figure 7 Location of system parts
3.2.1
GNSS antennas
For the GNSS antennas, consider the following:
The space above the antennas has to be free of obstructions of any kind. The antenna
should be protected from direct illumination of radar beams and other transmitting
antennas such as Inmarsat antennas. Seapath is more sensitive to blocking and
reflections (multipath) of GNSS signals than GNSS sensors which only utilise
pseudo-range data. This since Seapath also utilises carrier phase measurements for
heading determination, and both GNSS antennas need to see at least four common
satellites at the same time.
Caution
The GNSS antennas have to be mounted in such a way that
blocking of the GNSS signal I avoided.
In order to reduce problems due to multipath effects, the GNSS antennas have to be
mounted above the nearest deck at a height which is equal to the width of this deck
or higher.
The Antenna Bracket has to be mounted in such a way that torsion movement
relative to the ship's hull is kept at an absolute minimum.
Содержание Seapath 320
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