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.
Improved carrier tracking by smoothing estimators
Verbesserte Bahnberechnung durch Glaettung
IEEE Transactions on Aerospace and Electronic Systems ; AES-21 , 5 ; 610-618
1985
9 Seiten, 7 Quellen
Article (Journal)
English
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