Antenna Positioning

Effective antenna positioning is critical to achieving satisfactory system performance. GNSS satellite signals and the Fugro correction signals travel by line of sight. If the antenna cannot 'see' enough GNSS satellites, or the selected Fugro correction satellite, even momentarily, the receiver will be unable to generate a position.

Consequently it is important to ensure that not only is the GNSS antenna installed high up on the vessel, in order that it has the best view of the sky, but that it is kept clear of other radiating antennae and does not get 'shadowed' by other equipment.

The following document contains Fugro Satellite Positioning's guidelines on effective Antenna Installation.

Incorrect Correct
Incorrect antenna installation Correct antenna installation
The signal is blocked by the mast, radar and other equipment. The radar is also interfering with the Fugro signal. The signal sent by Fugro's geostationary satellite is not blocked. Also the radar is not interfering.