A Mobile Satellite System (MSS) will provide data and voice communications over a vast geographical area to a large population of mobile users. A technical overview is given of the extensive research and development studies and development performed under NASA's mobile satellite program (MSAT-X) in support of the introduction of a U.S. MSS. The critical technologies necessary to enable such a system are emphasized: vehicle antennas, modulation and coding, speech coders, networking and propagation characterization. Also proposed is a first, and future generation MSS architecture based upon realized ground segment equipment and advanced space segment studies.


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    Title :

    NASA's (National Aeronautics and Space Administration's) Mobile Satellite Development Program


    Contributors:
    W. Rafferty (author) / K. Dessouky (author) / M. Sue (author)

    Publication date :

    1988


    Size :

    12 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English