HALKON, 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
Proceedings of the SPIE;5503 (280)
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.