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.|