Title :
Frequency tracking based analysis of laser Doppler velocimetry signals for sound field measurements
Author :
Valeau, V. ; Mellet, C. ; Valiere, J.-C.
Author_Institution :
Lab. d´´Acoust. et de Mecanique, Maine Univ., Le Mans, France
Abstract :
This presentation discusses the comparison of three instantaneous frequency trackers in the context of the application of laser Doppler velocimetry to acoustic particle-velocity measurements. The first estimator is based on the cross Wigner-Ville transform (CWV), the second is the time-frequency synchronous transform (TFST) optimised for sine wave frequency modulated signals and the third is an adaptation of Kalman filtering. The performance of each estimator is studied in terms of bias and variance using simulations. The performance of these estimators in real conditions is also considered
Keywords :
Kalman filters; Wigner distribution; acoustic field; acoustic wave velocity measurement; laser velocimetry; particle velocity analysis; time-frequency analysis; Kalman filtering; acoustic particle-velocity measurements; bias; cross Wigner-Ville transform; instantaneous frequency trackers; laser Doppler velocimetry signals; sine wave frequency modulated signals; sound field measurements; time-frequency synchronous transform; variance; Acoustic applications; Acoustic measurements; Frequency estimation; Frequency measurement; Frequency modulation; Kalman filters; Laser velocimetry; Particle measurements; Particle tracking; Time frequency analysis;
Conference_Titel :
Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on
Conference_Location :
Pafos
Print_ISBN :
0-7803-5682-9
DOI :
10.1109/ICECS.1999.814443
