Seamless Satellite Switching - KVH Industries TracPhone V11IP User Manual

Seamless Satellite Switching

The high-traffic regions of the global mini-VSAT Broadband coverage
area are covered by more than one satellite. The ICM's built-in modem
maintains a prioritized list of all satellites in the network and selects
the highest priority satellite that provides coverage at the vessel's
current GPS location. If the antenna is unable to track the chosen
satellite for any reason (due to a blockage condition, for example), the
modem selects the next available satellite on the list and the antenna
automatically switches to that satellite. All Ku-band satellites are
prioritized over C-band satellites.
In addition, whenever the vessel travels outside the boundary of the
current satellite's coverage area, the modem selects the highest
priority satellite in the adjoining region and the antenna automatically
switches to that satellite to maintain the service connection.
Figure 1-7 Example of Automatic Satellite Switching
NOTE: The coverage areas shown here are for illustration purposes only.
They do not represent boundaries of actual coverage areas.
Antenna switches satellites
when vessel passes into
the next coverage area
mini-VSAT Broadband
TracPhone V11-IP User's Guide
Introduction
Satellites
11