DOI: https://doi.org/10.15407/techned2017.05.023

CRITERIA FOR THE NECESSARY AND SUFFICIENT NUMBER OF ITERATIONS OF FILTERING NON-PERIODIC NON-STATIONARY SIGNALS BY MULTI-ITERATIVE METHODS

Authors
N.A. Shydlovska, S.M. Zakharchenko, O.P. Cherkaskyi
Institute of Electrodynamics National Academy of Sciences of Ukraine,
pr. Peremohy, 56, Kyiv, 03057, Ukraine,
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Abstract

An analysis of efficiency of procedure-oriented criteria for determining the required number of filtration iterations of non-stationary non-periodic signals by the multi-iterative method of the moving average with an increasing width of the filtering window on an instance of pulses of voltage on the plasma-erosive load and of current in it had fulfilled. Two main groups of criteria are considered which are based on a comparison of the signal at the current iteration of its filtering either with the signal at the previous iteration or with a reference signal. Also criterion which has properties of criteria of both these groups is considered. The low effectiveness and nonuniversality of the known criteria is shown. New objectively-oriented criteria for the necessary and sufficient number of iterations of filtering non-stationary non-periodic signals, adaptive to the requirements for further signal processing, are proposed and an analysis of their effectiveness had fulfilled. References 13, figures 2, tables 4.

Key words: non-stationary non-periodic signals, multi-iterative methods of signals filtering of, criteria necessary and sufficient number of iterations.

Received:     23.05.2017
Accepted:     03.07.2017
Published:   17.08.2017

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