A concept utilizing a geostationary reference satellite (REFSAT) that broadcasts navigation aiding signals to low cost civil user terminals which employ the constellation of 24 NAVSTAR Global Positioning System (GPS) satellites for position determination is described. The signal acquisition, tracking and position fixing properties of such low cost, dual channel, L-band, civil user receiver designed to receive both GPS navigation and REFSAT navigation aiding signals is presented. REFSAT reduces the cost of user equipment.


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    Title :

    The REFSAT Approach to Low-Cost GPS Terminals


    Contributors:

    Publication date :

    1979


    Size :

    37 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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