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Proceedings Paper

Antinomies of different criteria for evaluating bandwidths in images and laser measurements
Author(s): Bohdan K. Wolczak
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Paper Abstract

The aim of this work is to present the limits of application of some often-applied criterions of evaluating frequency bandwidths, and to compared the results obtained with those of the so- called informational criterion of frequency bandwidths. Forty-two coefficients of bandwidths were given calculated for seven typical signals according to six definitions of spectral bandwidths applied. it was demonstrated that the problem of evaluating changes of spectral bandwidths cannot be solved by applying any definition of frequency bandwidth separately considered, as cases are possible where patented systems for contracting spectral bandwidths of frequency for some signals could, by other criterions of spectral evaluation, operate as systems of widening the spectral bandwidths. Attention was called to the utility of continuing further investigations on limits of application of the informational criterion of spectral bandwidths W0 for a wider range of signals, also on its connections with internationally adopted energetic criterions of evaluating the frequency bandwidths for different signals.

Paper Details

Date Published: 1 March 1995
PDF: 6 pages
Proc. SPIE 2202, Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing, (1 March 1995); doi: 10.1117/12.203227
Show Author Affiliations
Bohdan K. Wolczak, Technical Univ. of Szczecin (Poland)


Published in SPIE Proceedings Vol. 2202:
Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing

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