Comparative study of four adaptive frequency trackers

Authors:
P. Tichavsky;A. Nehorai
Affiliations:
Inst. of Inf. Theory & Autom., Prague;-
Venue:
IEEE Transactions on Signal Processing
Year:
1997

Citing 0
Cited 8

Brief paper: Generalized adaptive notch filters with frequency debiasing for tracking of polynomial phase systems

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Multi-signal extension of adaptive frequency tracking algorithms

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Application of sliding fuzzy control on robust algorithm for frequency estimation of distorted signals in power systems

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Estimation and tracking of complex-valued quasi-periodically varying systems

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Abstract

We study and compare four algorithms for adaptive retrieval of slowly time-varying multiple cisoids in noise: the adaptive notch filter, the multiple frequency tracker, the adaptive estimation scheme, and the hyperstable adaptive line enhancer. The local behavior of the algorithms in a neighborhood of their equilibrium state [assuming high signal-to-noise ratio (SNR) and large data sample] for a two-cisoid signal is treated in a similar way to the linear filter approximation technique used for a single-cisoid case. The validity of the results is confirmed by computer simulations