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Satellite, Pointing

TRIPOD

For satellites

Comat has developed an innovative antenna-pointing mechanism, in collaboration with the French Space Agency (CNES).

Main
benefits

  • A unique parallel architecture offering 3 degrees of freedom (Azimuth, Site, Zoom)
  • Excellent agility for antenna-pointing applications
  • Infinite azimuth turns
  • Dual polarization through 2 RF cables, without slip rings
  • Very low jitter thanks to a reduced mobile mass (since the 3 actuators remain stationary on the baseplate)
  • Easy-to-use central hold down & release system
  • ITAR-free
  • Compliant with ECSS standards.

Context

This equipment is intended for X band telemetry downlink to be flown onboard next generations of Earth Observation satellites. The Tripod orients a Ø220 mm high-gain parabolic X-band antenna.

Key features

Precision
—–

1° (worst case)

Maximum pointing speed in tracking mode
—-

5°/s

Pointing domain
—-

+/-74° elevation

Initialization time
—-

< 15s

Station transition time
—-

8s (average) / 25s (worst case)

Infinite azimuth rotation
—-

360°

Lifetime in low Earth orbit
—-

10 years

Data rate
—-

2 Gbps with low insertion loss (<1.5 dB @ pointing system level)

Partner

Download
product sheet

Address: 6 Chemin de Vignalis, 31130 FLOURENS, FRANCE | Phone: +33 (0)5 61 24 26 16
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