One-way range and Doppler methods for providing user orbit and time determination are examined. Forward link beacon tracking, with on-board processing of independent navigation signals broadcast continuously by TDAS spacecraft; forward link scheduled tracking; with on-board processing of navigation data received during scheduled TDAS forward link service intervals; and return link scheduled tracking; with ground-based processing of user generated navigation data during scheduled TDAS return link service intervals are discussed. A system level definition and requirements assessment for each alternative, an evaluation of potential navigation performance and comparison with TDAS mission model requirements is included. TDAS satellite tracking is also addressed for two alternatives: BRTS and VLBI tracking.


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    Title :

    Tracking Data Acquisition System (TDAS) for the 1990'S. Volume 6: TDAS Navigation System Architecture


    Contributors:
    B. D. Elrod (author) / A. Jacobsen (author) / R. A. Cook (author) / R. N. P. Singh (author)

    Publication date :

    1983


    Size :

    231 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English