Abstract In order to improve the Precise Orbit Determination (POD) of the GPS constellation and the Jason-2 Low Earth Orbiter (LEO), we carry out a simultaneous estimation of GPS satellite orbits along with Jason-2 orbits, using GINS software. Along with GPS station observations, we use Jason-2 GPS, SLR and DORIS observations, over a data span of 6months (28/05/2011–03/12/2011). We use the Geophysical Data Records-D (GDR-D) orbit estimation standards for the Jason-2 satellite. A GPS-only solution is computed as well, where only the GPS station observations are used. It appears that adding the LEO GPS observations results in an increase of about 0.7% of ambiguities fixed, with respect to the GPS-only solution. The resulting GPS orbits from both solutions are of equivalent quality, agreeing with each other at about 7mm on Root Mean Square (RMS). Comparisons of the resulting GPS orbits to the International GNSS Service (IGS) final orbits show the same level of agreement for both the GPS-only orbits, at 1.38cm in RMS, and the GPS+Jason2 orbits at 1.33cm in RMS. We also compare the resulting Jason-2 orbits with the 3-technique Segment Sol multi-missions d’ALTimétrie, d’orbitographie et de localisation précise (SSALTO) POD products. The orbits show good agreement, with 2.02cm of orbit differences global RMS, and 0.98cm of orbit differences RMS on the radial component.


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    Titel :

    Multi-technique combination of space geodesy observations: Impact of the Jason-2 satellite on the GPS satellite orbits estimation


    Beteiligte:
    Zoulida, Myriam (Autor:in) / Pollet, Arnaud (Autor:in) / Coulot, David (Autor:in) / Perosanz, Félix (Autor:in) / Loyer, Sylvain (Autor:in) / Biancale, Richard (Autor:in) / Rebischung, Paul (Autor:in)

    Erschienen in:

    Advances in Space Research ; 58 , 7 ; 1376-1389


    Erscheinungsdatum :

    2016-06-14


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch