Attachment C_R.B23636.001.02.SEMP_final_lowres

The two Trimble 540AP GNSS antennas associated with the POS MV were affixed to a pair
bolts at the ends of the spreader bar. The location of the mast / mount provided clear views of
all available GNSS satellites. Separation between the two antennas is mechanically designed
to be 2m but a refined measurement was derived from the GNSS Azimuthal Measurement
System (GAMS) calibration (see Calibration section below)..




        Figure 10: GNSS antenna mounting on an L-shaped bracket at the stern of the vessel.



The POS MV PCS and all other electrical equipment were housed in the bow section of the
main cabin. GNSS antenna and IMU cables were fed into the area along the starboard side of
the deck and excess cable neatly coiled within the space to minimise the risk of
trips/slips/damage to the cables.
The acquisition laptop was located on a shelf in front of the passenger seat on the port side of
the vessel. An external monitor was connected to the laptop to provide the helmsman with
display of the real-time DTM to assist in vessel steerage.




12                             Noosa Council - Noosa River Survey                       20.06.2019