Kongsberg Satellite Services
General info about polar orbiting satellite
operations from Satellite Ground Station
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Kongsberg Satellite Services
SvalSat and Tromsø- Coverage
Svalsat: All 14 of 14 daily passes
are visible
Tromsø: 10 of 14 daily passes
visible
Typical contact time from 9-15
minutes
Polar orbiting satellites (illustrated
by red orbit-line) show up in horison
from all directions
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Kongsberg Satellite Services
Platåberget – close to airport
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Kongsberg Satellite Services
Tromsø station with KSAT head office
Main multi mission antennas
TG1 (9m), TG2 (10m), TG6
(5,4m) and smaller antenna
systems TG3 (NOAA), TG4 (LUT),
TG5 (3m Cosmic/ Formosat-3),
TG7 (Orbcomm) and TG8 Skybox
Digital Globe antennas with DG1
(7,3m) and DG2 (5m)
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Kongsberg Satellite Services
Typical antenna for tracking polar orbiting
satellites – 2 or 3 axes required to follow satellite
Typical tracking antenna:
Has azimut axis
Has elevation axis
Has train or third axis to
preposition antenna
Max speed typically 1015 degrees per second.
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Kongsberg Satellite Services
Accuracy requirements – parabolic and highly
directional antennas
The 3dB opening angle for Xband is typically 0,2 degrees
for a antenna with a 13
meter reflector, ,
The antenna typically has a
pointing accuracy of 0,05
degrees RMS
The antenna typically has a
tracking accuracy of 0,03
degrees
To follow satellite and to not
loose data due to
mispointing. RFI will cause
mispointing and data loss.
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