Characteristics of signal tracking Kalman filter (KF) approaches for a Global Navigation Satellite System (GNSS) receiver are presented. In particular the direct-state KF is designed by using a state vector for signal parameters not for signal parameter errors, so as to directly utilize the discriminator output as a measurement residual. This enables the reuse of the existing signal tracking loop structure by simply adjusting the filter coefficients based on a time-varying optimal Kalman gain. The characteristics of the direct-state KF together with the error-state KF are analyzed by comparing their noise bandwidth and open- and closed-loop transfer functions with those of a traditional method. These KF approaches are mathematically equivalent to the traditional method except for the use of time-varying gains. This fact provides an insight how to tune the designed KFs based on their expected performances.


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    Titel :

    Characteristics of Kalman Filters for GNSS Signal Tracking Loop


    Beteiligte:
    Jong-Hoon Won, (Autor:in) / Pany, T. (Autor:in) / Eissfeller, B. (Autor:in)


    Erscheinungsdatum :

    2012-10-01


    Format / Umfang :

    6754479 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch