For single-frequency global positioning system (GPS) users,uncompensated ionospheric GPS-signal time delay is the largestsource of range-measurement error, contributing as much as 100 m.To improve performance for these users, a numeric model of theionospheric range error was incorporated into the GPS system. Thispaper presents an assessment of that model in which actualionospheric time-delay values as measured by GPS dual-frequencyreceivers were compared with model values computed at the sametime points. Comparison was made over a broad range of conditionswith dependency of model accuracy on several of the modelparameters. It appears that the model leads to an overall reductionin rms range measurement error of 60 percent.


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    Titel :

    Evaluation of GPS Ionospheric Time-Delay Model


    Beteiligte:
    Feess, W.A. (Autor:in) / Stephens, S.G. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.05.1987


    Format / Umfang :

    2030668 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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