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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Evaluation of GPS Ionospheric Time-Delay Model


    Contributors:

    Published in:

    Publication date :

    1987-05-01


    Size :

    2030668 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Development of Local Ionospheric Time Delay Model for Single-Frequency DGPS Users

    Kee, C. / Yun, D. / Institute of Navigation; Satellite Division | British Library Conference Proceedings | 1997



    Variability of ionospheric time delay in the mediterranean region

    Hendrickson, D.H. / Klobuchar, J.A. | Tema Archive | 1980


    Ionospheric incremental delay models in railway applications

    Salvatori, P. / Neri, A. / Stallo, C. et al. | IEEE | 2015