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Title:
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Filtering real signals through frequency modulation and peak detection in the time-frequency plane |
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Author:
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Arnold, M.J.; Roessgen, M; Boashash, B
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Abstract:
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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. |
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Description:
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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). |
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URI:
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http://hdl.handle.net/10576/10741
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Date:
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1994-04 |