Title :
Adaptive estimation of the spectrum and mean frequency of Doppler signals
Author :
Herment, A. ; Demoment, G. ; Gioviannelli, J.F.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
An adaptive parametric method for spectral analysis as well as an adaptive mean frequency estimator are proposed to improve the quality of flow estimation in ultrasound Doppler velocimetry. The choice of the adaptive criterion is addressed to minimize the mean square error on estimation in noisy signals. Then, two suboptimal spectral and mean-frequency estimators are derived for real-time applications. Finally, these two estimators are compared to the periodogram and the correlation angle estimator, respectively
Keywords :
Doppler measurement; acoustic signal processing; adaptive estimation; adaptive signal processing; flow measurement; spectral analysis; ultrasonic measurement; velocity measurement; Doppler signals; adaptive mean frequency estimator; adaptive parametric method; adaptive spectrum estimation; correlation angle estimator; flow estimation; mean frequency; mean square error; noisy signals; periodogram; real-time applications; spectral analysis; suboptimal spectral estimators; ultrasound Doppler velocimetry; Acoustic measurements; Acoustic signal processing; Adaptive estimation; Adaptive signal processing; Doppler measurements; Fluid flow measurement; Spectral analysis; Velocity measurement;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401922
