GPAP

GPAP

The hardware and software GPAP system with a gyrostabilized antenna is an on-board system for continuous and reliable reception of satellite television signals. The system has been developed to provide ships with the capacity to reliably and continuously receive satellite television signals, even during the ship's movement. The GPAP guarantees stable reception of television signal all over the world (within the satellite coverage zone).

The GPAP includes a satellite antenna installed on three-axis gyrostabilized supports; moreover, the control of the focal axis of the antenna by azimuth and elevation angle is executed from the hardware part of the complex.

The system provides the following capabilities:
  • stabilization of the focal axis of the antenna in the inertial space;
  • manual or automatic pointing of the antenna towards the satellite;
  • automatic tracking of the satellite during the ship's movement.

The gyrostabilized antenna is protected against the influences of wind and rain with a radio-transparent shelter.


The hardware and software GPAP system on the patrol ship Yaroslav Mudry
The hardware and software GPAP system on the patrol ship Yaroslav Mudry

Basic specifications:
Maximum turn angle of the antenna by azimuth and by elevation angle
Error of measuring the angular orientation of the antenna by azimuth and the elevation angleless than 5 angular minutes
Rolling and pitching compensation30 angular degrees
Maximum turn angle of the antenna by azimuth270 angular degrees
Maximum turn angle of the antenna by elevation anglefrom -20 to +115 angular degrees
Immunity to external influences:
a) rolling (with the period of 1213 s)
b) pitching (with the period of 68 s)
c) yawing (with the period of 60 s)

20 angular degrees
15 angular degrees
5 angular degrees

 

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