The German small satellite BIRD carries an elaborate GPS-based Onboard Navigation System (ONS) which provides precise real-time orbit determination as well as orbit and event prediction capabilities. The ONS supports the BIRD Attitude Control System to allow for a nadir pointing of the spacecraft during pay load image sessions and enables a geocoding of BIRD sensor images on-the-flight. The analysis of the BIRD ONS flight data indicates an orbit determination accuracy of 5 m for position and 0.006 m/s for velocity. In the absence of GPS data for a two hour period, the ONS predicts the BIRD position with an accuracy of better than 110m. In addition to the ONS, a Real-time Twoline Generator is operated which estimates Twoline elements from GPS data onboard the spacecraft. This enables orbit forecasts over one week with timing errors of less than 5 s.


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    Titel :

    Flight results from the bird onboard navigation system


    Beteiligte:
    Gill, E. (Autor:in) / Montenbruck, O. (Autor:in) / Montenegro, S. (Autor:in)


    Erscheinungsdatum :

    2003


    Format / Umfang :

    4 Seiten, 6 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    The onboard navigation system for the BIRD small satellite

    Gill, E. / Motenbruck, O. | Tema Archiv | 2002


    The onboard navigation system for the BIRD small satellite : 31 tables

    Gill, Eberhard / Montenbruck, Oliver | TIBKAT | 2002


    TDRSS Onboard Navigation System (TONS) Flight Qualification Experiment

    Gramling, C. / Hart, R. / Folta, D. et al. | British Library Conference Proceedings | 1994


    TDRSS Onboard Navigation System (TONS) Flight Qualification Experiment

    C. J. Gramling / R. C. Hart / D. C. Folta et al. | NTIS | 1994