Title :
Doppler Signal Detection And Particle Time Of Flight Estimation Using Wavelet Transform For Acoustic Velocity Measurement
Author :
Degroot, Anne ; Montresor, Silvio ; Gazengel, Bruno ; Richoux, Olivier ; Simon, Laurent
Author_Institution :
Lab. d´´Acoustique, Maine Univ., Le Mans
Abstract :
This paper discusses a processing technique for laser Doppler velocimetry (LDV) data, enabling to detect and localize in time domain the presence of Doppler bursts in case of acoustic excitation. A joint detection-estimation scheme based on the use of the wavelet transform (WT) realized in the time-scale domain is proposed. The performances of the detector are characterized with ROC (receiver operating characteristic) curves. Finally, the estimator performances are studied by means of Monte Carlo trials obtained from synthesized LDV signals
Keywords :
Doppler measurement; Monte Carlo methods; acoustic wave velocity; laser velocimetry; optical signal detection; wavelet transforms; Doppler signal detection; Monte Carlo trials; acoustic excitation; acoustic velocity measurement; detection-estimation scheme; flight estimation; laser Doppler velocimetry; particle time; receiver operating characteristic; signal synthesis; time-scale domain; wavelet transform; Acoustic signal detection; Acoustic waves; Detectors; Laser excitation; Laser velocimetry; Monte Carlo methods; Signal detection; Velocity measurement; Wavelet domain; Wavelet transforms;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1660611
