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    3POD

    Telecommunication and Observation

    Reference

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

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    3POD

    telecommunications-and-observations

    - Reference

    Image 3POD
    Image espace

    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.

    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.

    Key
    features

    Precision

    1° (worst case)

    Maximum Pointing Speed in Tracking Mode

    5°/s

    Pointing Domain

    +/-74° elevation

    Initialization Time

    <15 s

    Station Transition Time

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

    Infinite Azimuth Rotation

    360°

    Lifetime on Low Earth Orbit

    10 years

    Data rate

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

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