Laser application in chosen maritime economy divisions

Jozef Kirkiewicz

doi:10.1117/12.57196

1 August 1991 Laser application in chosen maritime economy divisions

Jozef Kirkiewicz

Proceedings Volume 1391, Laser Technology III; (1991) https://doi.org/10.1117/12.57196
Event: Laser Technology III, 1990, Szczecin, Poland

Abstract

There has been described the method of making use of the Doppler effect in laser anemometrics, indicating that in order to define the frequency shifting, the method of heterodyne action for light beams passing through the area of examined flow has been used. The optics /scheme/ of anemometer has been shown, pointing at the arrangement of interference striae as the place of measurement. The radiation e mitted from the place of measuring location is recorded by photode tector, and then in the photodetector signal one can separate the basic signal and the frequency signal /Doppler signal!. The recorded curves, correspoding to the basic and Doppler signals, are passed on to the analysing and calculating block which displays the value of the flow velocity.

Citation Download Citation

Jozef Kirkiewicz "Laser application in chosen maritime economy divisions", Proc. SPIE 1391, Laser Technology III, (1 August 1991); https://doi.org/10.1117/12.57196

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