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    Performances of ionospheric delays for spaceborne GPS

    Yang, Xia / Li, Jiancheng | Emerald Group Publishing | 2015
    Keywords: Global ionospheric maps (GIM) , Global positioning system (GPS)

    Double-layer fusion algorithm for EGI-based system

    Wang, Rong / Liu, Jianye / Xiong, Zhi et al. | Emerald Group Publishing | 2013
    Keywords: Embedded GPS/INS system