This paper begins with a review of the fundamental mechanism by which speckle noise is generated in Laser Vibrometry
before describing a new numerical simulation of speckle behaviour for prediction of noise level in a real measurement.
The simulation data provides real insight into the phase and amplitude modulation of the Doppler signal as a result of
speckle changes. The paper also includes experimental data looking at the influence of speckle noise in measurements on
rotors with a selection of surface treatments and in scanning and tracking configurations.
- Mechanical, Electrical and Manufacturing Engineering
CitationHALKON, B.J. and ROTHBERG, S.J., 2004. Laser vibrometry meets laser speckle. IN: Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Publisher© 2004 Society of Photo-Optical Instrumentation Engineers.
VersionVoR (Version of Record)
NotesThis is a conference paper [© Society of Photo-Optical Instrumentation Engineers]. It is also available at: http://dx.doi.org/10.1117/12.579760 .One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Book seriesProceedings of the SPIE;5503 (280)