# Estimating and interpreting the instantaneous frequency of a signal. I - Fundamentals. II - Algorithms and applications

@article{Boashash1992EstimatingAI, title={Estimating and interpreting the instantaneous frequency of a signal. I - Fundamentals. II - Algorithms and applications}, author={B. Boashash}, journal={Proceedings of the IEEE}, year={1992} }

For pt.I see ibid., vol.80, no.4, p.520-38 (1992). The concept of instantaneous frequency (IF) is extended to discrete-time signals. The specific problem explored is that of estimating the IF of frequency-modulated (FM) discrete-time signals embedded in Gaussian noise. Well-established methods for estimating the IF include differentiation of the phase and smoothing thereof, adaptive frequency estimation techniques such as the phase locked loop (PLL), and extraction of the peak from time-varying… Expand

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The concept of instantaneous frequency, its definitions, and the correspondence between the various mathematical models formulated for representation of IF are discussed and it is shown that these notions are well described in the context of the theory presented. Expand

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