Smoothing as a way to improve the carrier-phase estimation is proposed and analyzed. The performance of first- and second-order Kalman optimum smoothers is investigated. This performance is evaluated in terms of steady-state covariance error computation, dynamic tracking, and noise response. It is shown that with practical amounts of memory, a second-order smoother can have a position error due to an acceleration or jerk step input less than any prescribed maximum. As an example of importance to the NASA deep space network (DSN), a second-order smoother can be used to track the Voyager spacecraft at Uranus and Neptune encounters with significantly better performance than a second-order phase-locked loop.


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    Title :

    Improved carrier tracking by smoothing estimators


    Additional title:

    Verbesserte Bahnberechnung durch Glaettung


    Contributors:

    Published in:

    Publication date :

    1985


    Size :

    9 Seiten, 7 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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