Examination of influence of fringe field parameters on accuracy of velocity measurements of digital laser anemometer

Jan Karol Jabczynski

doi:10.1117/12.195940

12 December 1994 Examination of influence of fringe field parameters on accuracy of velocity measurements of digital laser anemometer

Jan Karol Jabczynski

Author Affiliations +

Proceedings Volume 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements; (1994) https://doi.org/10.1117/12.195940
Event: International Conference on Interferometry '94, 1994, Warsaw, Poland

Abstract

The influence of optical and electronic parameters of digital laser anemometer on the accuracy of velocity measurements was investigated. The sizes and fringe number of the interference field of the anemometer was examined for circular and astigmatic entrance beams to verify the influence of the above parameters on Doppler signal parameters. The spectrum averaging procedure was applied to decrease the uncertainty of Doppler frequency measurements. The relative standard deviation of measurements was achieved < 0.1% for the best configuration of optical and electronic parameters of the anemometer.

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Jan Karol Jabczynski "Examination of influence of fringe field parameters on accuracy of velocity measurements of digital laser anemometer", Proc. SPIE 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements, (12 December 1994); https://doi.org/10.1117/12.195940

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