Time-frequency distribution spectral polynomials for instantaneous frequency estimation.

The local autocorrelation function of the time}frequency distribution (TFD), de"ned by an appropriate kernel, is used to form a spectral polynomial. Some of the roots of this polynomial correspond to the instantaneous frequencies of the input signal. In this paper, we use extended version of Newton's method for root-"nding to obtain the trajectories of the signal IF zeroes. It is shown that the proposed TFD-based zero-tracking technique provides good tracking performance for both mono- and multi-component signals.

Main Author: Wang, Chenshu.
Other Authors: Amin, Moeness G.
Language: English
Published: 1999
Online Access: http://ezproxy.villanova.edu/login?url=https://digital.library.villanova.edu/Item/vudl:173753