Abstract We developed the methodology for the optimal estimation of global ionospheric coefficients of the current Global Navigation Satellite Systems (GNSSs), including the eight- and ten-parameter Klobuchar-like as well as NeQuick models. The ionospheric coefficients of those correction models are calculated from two sets of globally distributed tracking stations of the International GNSS Services (IGS). Performance of the re-estimated Klobuchar-like and NeQuick coefficients are validated during 2002–2014 over the continental and oceanic areas, respectively. Over the continental areas, GPS TECs derived from 40 ground GPS receivers are selected as reference. The eight-, ten-parameter Klobuchar-like and NeQuick models can mitigate the ionospheric delay by 65.8, 67.3 and 75.0%, respectively. Over the global oceans, the independent TECs derived from Jason-1&2 altimeters are used as reference. The re-estimated ionospheric correction models can mitigate 56.1–66.7% of the delay errors. Compared to the original GPS Ionospheric Correction Algorithm (ICA), performance of those eight-, ten-parameter Klobuchar-like and NeQuick models has improved 3.4, 5.9 and 13.4% during the whole test period, respectively. The methodology developed here takes the advantage of high-quality ionospheric TECs derived from the global network of GNSS receivers. The re-estimated ionospheric coefficients can be used as precise ionospheric products to monitor and assess GNSS broadcast ionospheric parameters and to improve the performance of various single-frequency GNSS applications.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Refinement of global ionospheric coefficients for GNSS applications: Methodology and results


    Beteiligte:
    Wang, Ningbo (Autor:in) / Li, Zishen (Autor:in) / Huo, Xingliang (Autor:in) / Li, Min (Autor:in) / Yuan, Yunbin (Autor:in) / Yuan, Chao (Autor:in)

    Erschienen in:

    Advances in Space Research ; 63 , 1 ; 343-358


    Erscheinungsdatum :

    2018-09-15


    Format / Umfang :

    16 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    GNSS station characterisation for ionospheric scintillation applications

    Romano, Vincenzo / Spogli, Luca / Aquino, Marcio et al. | Elsevier | 2013


    A Smartphone App for GNSS Ionospheric Data Collection: Initial Field Test Results

    Kennedy, A. / Kingsbury, R. / Coster, A. et al. | British Library Conference Proceedings | 2015


    GNSS data filtering optimization for ionospheric observation

    D’Angelo, G. / Spogli, L. / Cesaroni, C. et al. | Elsevier | 2015