Antinomies of different criteria for evaluating bandwidths in images and laser measurements

Bohdan K. Wolczak

doi:10.1117/12.203227

1 March 1995 Antinomies of different criteria for evaluating bandwidths in images and laser measurements

Bohdan K. Wolczak

Proceedings Volume 2202, Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing; (1995) https://doi.org/10.1117/12.203227
Event: Laser Technology: Fourth Symposium, 1993, Szczecin, Poland

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.

Citation Download Citation

Bohdan K. Wolczak "Antinomies of different criteria for evaluating bandwidths in images and laser measurements", Proc. SPIE 2202, Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing, (1 March 1995); https://doi.org/10.1117/12.203227

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