Position surveillance using one active ranging/communication satellite and the time-of-arrival of signals from an independent satellite was shown to be feasible and practical. A towboat on the Mississippi River was equipped with a tone-code ranging transponder and a receiver tuned to the timing signals of the GOES satellite. A similar transponder was located at the office of the towing company. Tone-code ranging interrogations were transmitted from the General Electric Earth Station Laboratory through ATS-6 to the towboat and to the ground truth transponder office. Their automatic responses included digital transmissions of time-of-arrival measurements derived from the GOES signals. The Earth Station Laboratory determined ranges from the satellites to the towboat and computed position fixes. The ATS-6 lines-of-position were more precise than 0.1 NMi, 1 sigma, and the GOES lines-of-position were more precise than 1.6 NMi, 1 sigma. High quality voice communications were accomplished with the transponders using a nondirectional antenna on the towboat. The simple and effective surveillance technique merits further evaluation using operational maritime satellites.


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    Titel :

    Position Surveillance Using One Active Ranging Satellite and Time-of-Arrival of a Signal from an Independent Satellite


    Beteiligte:
    R. E. Anderson (Autor:in) / R. L. Frey (Autor:in) / J. R. Lewis (Autor:in)

    Erscheinungsdatum :

    1980


    Format / Umfang :

    97 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch






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