Highlights The BDS-based POD precision using BDS-2 satellite PCO values from the CSNO are not as accurate as those obtained from the IGS MGEX. Using receiver BDS PCVs, the precisions of BDS-based and combined POD can be improved. In most cases, POD precisions using the estimated PCVs with 2˚ resolution are superior to those with 5˚ resolution. The weighting for GPS and BDS observations can further improve the precisions of combined POD, and the tested results are better than those with equal weight.

    Abstract The FY3C and FY3D satellites were equipped with global navigation satellite occultation detector (GNOS) receivers that received both GPS and BDS-2 signals. For further improving precise orbit determination (POD) precisions, we estimated receiver GPS and BDS signal phase center variations (PCV) models with 2° and 5° resolutions and set the different weights for GPS and BDS-2 observations in the combined POD. The BDS-based POD precision using BDS-2 satellite antenna phase center offset (PCO) values from the China Satellite Navigation Office (CSNO) are not as accurate as those obtained from the International GNSS Service (IGS) Multi-GNSS experiments project (MGEX). The estimated receiver GPS and BDS PCV models with 2° and 5° resolutions were estimated from the GPS phase residuals of GPS-based POD and BDS phase residuals of combined POD, respectively. In most cases, the POD precisions using the estimated PCVs with 2° resolution are superior to those with 5° resolution. The precisions of the BDS-based POD and combined POD were both improved by introducing the receiver BDS PCV models. The weighting for GPS and BDS-2 observations can further improve the precision of the combined POD. The tested results of selected weights are better than those with equal weight in the combined POD. The experiment results show that orbital precisions of FY3C are worse than those of FY3D.


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    Titel :

    Precise orbit determination and precision comparison for FY3C and FY3D with receiver antenna GPS and BDS PCV using spaceborne BDS and GPS observation data


    Beteiligte:
    Liu, Mingming (Autor:in) / Yuan, Yunbin (Autor:in) / Ou, Jikun (Autor:in) / Yang, Guanglin (Autor:in)

    Erschienen in:

    Advances in Space Research ; 71 , 1 ; 375-389


    Erscheinungsdatum :

    2022-08-26


    Format / Umfang :

    15 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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