Methodologies sufficient to monitor GPS satellite orbit ephemeris for category I aircraft precision approach navigation are described. In the absence of a satellite maneuver, it is shown that a monitor based on the projection of previously validated ephemeris parameters is adequate to meet navigation integrity and availability requirements. After scheduled stationkeeping maneuvers, no previously validated ephemerides are available, so a measurement-based method is required. The feasibility of such a monitor is also established.


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    Title :

    Orbit ephemeris monitors for local area differential GPS


    Contributors:
    Pervan, B. (author) / Gratton, L. (author)


    Publication date :

    2005-04-01


    Size :

    1714413 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English







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