AbstractA real time numerical orbit determination method has been developed for a precise domestic time synchronization service. A one-way time synchronization method via a geostationary communication satellite was used. A differential method was also applied to mitigate errors. A numerical dynamic orbit determination method with a two-step estimator algorithm was implemented to further improve the differential mode time synchronization service through a more accurate acquisition of the geostationary satellite position. Perturbation force models were applied for the satellite dynamics, which include non-spherical geo-potential perturbations, lunar-solar perturbations, and solar radiation pressure. The reference stations for orbit determination were composed of four calibrated stations. Simulations were conducted to verify the performance of the proposed real time numerical orbit determination technique. The results verified that this technique made it possible to estimate real time position of a geostationary satellite within an accuracy of 2 km error in a spheroid radius. This performance demonstrates that the time accuracy is better than 40 nano seconds in the southern area of the Korean-peninsula. The real time numerical orbit determination method developed in this study can provide a reliable, highly accurate time transfer service through the establishment of domestic-only benchmarks.


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    Titel :

    Real time numerical dynamic orbit determination of geostationary satellite for time synchronization service


    Beteiligte:
    Kim, Bang-Yeop (Autor:in) / Yoon, Jae-Cheol (Autor:in) / Choi, Kyu-Hong (Autor:in) / Chang, Young-Keun (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2002-11-15


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch