This paper presents an innovative approach aimed at enhancing satellite position determination accuracy within a geostationary equatorial orbit (GEO) by integrating a regional navigation satellite system (RNSS) with a global navigation satellite system (GNSS). In a GEO, incoming GNSS signals are typically constrained to a specific direction on the other side of the Earth, resulting in a significant dilution of precision (DOP) and, consequently, a significant radial error. By incorporating an RNSS, signals from more diverse directions are available, improving observability and enhancing navigation precision. Taking the quasi-zenith satellite system (QZSS) as a representative RNSS, this paper demonstrates the feasibility of receiving signals from GEO satellites across a substantial range. Link budget analyses were conducted using the precise side-lobe patterns of the QZSS, revealing that QZSS signals can be consistently observed across most arcs in a GEO. Two comprehensive simulations were conducted: a point solution and an extended Kalman filter-based orbit determination. The results affirm the anticipated improvement in navigation precision indicated by the DOP analysis. It is essential to note that whereas RNSS signals can be received from any longitude in a GEO, enhanced navigation precision relies on the distance from the satellite to the RNSS. Considering the availability of multiple RNSS options, the concept presented in this research can be adapted to any longitude within a GEO, thereby promoting stable, high-precision navigation.


    Access

    Download


    Export, share and cite



    Title :

    Enhancing Navigation Accuracy in a Geostationary Orbit by Utilizing a Regional Navigation Satellite System


    Contributors:
    Yu Nakajima (author) / Toru Yamamoto (author)


    Publication date :

    2024




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    Geostationary Satellite Navigation Systems

    Ha, Tri T. / Robertson, R. Clark | IEEE | 1987



    Observability Analysis of a Geostationary Satellite Autonomous Navigation System

    Jianxin, G. / Yongchun, X. / International Federation of Automatic Control | British Library Conference Proceedings | 2004


    Preliminary Orbit Design for Turkish Regional Navigation Satellite System

    Buyuk, Seda / Utku Orengul, Omer / Can Basibuyuk, Arif et al. | IEEE | 2019