Filtering real signals through frequency modulation and peak detection in the time-frequency plane

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Filtering real signals through frequency modulation and peak detection in the time-frequency plane

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Title: Filtering real signals through frequency modulation and peak detection in the time-frequency plane
Author: Arnold, M.J.; Roessgen, M; Boashash, B
Abstract: A novel technique for filtering a real signal is presented. The method is based upon encoding the signal as an instantaneous frequency (IF) and using IF analysis techniques to recover a filtered version of it. A general iterative time-frequency peak filtering (TFPF) scheme based on this method is formulated. Simulations are given which show extremely clean recovery of signals in noise levels down to -9 dB. Applications to estimating the polynomial phase coefficients of nonstationary signals and differentiating noisy signals are presented.
Description: This paper is an earlier conference version of a journal paper that presents the idea and algorithm for signal enhancement using time-frequency peak filtering. (The most recent upgrade of the original software package that calculates Time-Frequency Distributions and Instantaneous Frequency estimators can be downloaded from the web site: www.time-frequency.net. This was the first software developed in the field, and it was first released publicly in 1987 at the 1st ISSPA conference held in Brisbane, Australia, and then continuously updated).
URI: http://hdl.handle.net/10576/10741
Date: 1994-04

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