Tracking Avoidance Zones; Tracking Avoidance Zones Overview - KVH Industries TracPhone V11 HTS User Manual

Tracking Avoidance Zones Overview

In an ideal installation, the antenna has a clear view of the sky in all
directions and no other radiating equipment is nearby that can
interfere with the satellite signal. However, such an ideal installation is
not always achievable on a vessel, particularly on smaller yachts.
Therefore, the system allows you to configure up to five tracking
avoidance zones for areas where there may be blockage or RF
interference causing marginal reception and intermittent antenna
performance.
Whenever the antenna is tracking a satellite in the direction of a
tracking avoidance zone, it will switch to a different satellite if one is
available. An allowance period (1-60 minutes, selectable) precludes
switching in cases when the antenna is simply passing through a zone
while the vessel is turning. The system calculates how long the
antenna will be pointing in the zone based on the vessel's rate of turn.
If the calculated time exceeds the allowance period, the antenna will
immediately switch satellites, as long as there is an alternate satellite
available in your service region.
Figure 5-1 Passing Through a Tracking Avoidance Zone (Example)
Antenna
Satellite
Tracking Avoidance Zone = 170° to 190° (azimuth)
Rate of Turn = 2° per minute
TracPhone V11-HTS User's Guide
5 minutes
0
Antenna
190 170
Satellite

Tracking Avoidance Zones

10 minutes
Antenna
Satellite
43