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Proceedings Paper

Comparative study of accuracy of major signal processing techniques in laser Doppler velocimetry
Author(s): Ivan A. Popov
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Paper Abstract

The random and bias errors of Doppler spectral shift measurements, correlation measurements and zero crossing techniques are discussed. It is shown that spectral shift measurement technique has advantage over other techniques in low signal-to-noise ratio region, whereas zero crossing technique based on analysis of probability density ensures lower random and bias errors at high enough SNR. The correlation technique has relatively low random error but shows considerable bias error in the region of low and moderate SNR when information about Doppler frequency is obtained from first zero of correlation function.

Paper Details

Date Published: 22 June 2004
PDF: 11 pages
Proc. SPIE 5503, Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 June 2004); doi: 10.1117/12.579604
Show Author Affiliations
Ivan A. Popov, George Kelk Corp. (Canada)


Published in SPIE Proceedings Vol. 5503:
Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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