Multiphase Pipe Flow velocity measurements in Strong Colored Noisy Doppler Ultrasound: Parametric and non parametric approaches

Denis Kouamé (1, 2) , Cheick Guetbi (1) , Jean-Pierre Remenieras (1) , Jean-Marc Girault (1) , Abdeldjalil Ouahabi (1) , Frédéric Patat (1)

1 LUSSI - Laboratoire Ultrasons Signaux et Instrumentation
2 IRIT-TCI - Traitement et Compréhension d’Images

Real time flow velocity measurement is a problem of considerable practical interest in industrial and biomedical applications. Due to their good frequency resolution, parametric methods such as recursive least squares or their variants are commonly used in such cases. However, some typical problems of these methods, namely correct order selection and fitness of the parametric model, may alter the accuracy of the frequency estimates. This paper provides comparison between specific Instrumental Variable (IV) identification which simultaneously gives model parameters and orders, and different non parametric time-frequency estimators. Results of tests on modelled Doppler signals with known flow velocity profile, are discussed.

Mots clés: Velocity measurement; Colored noise; Ultrasonic imaging; Frequency estimation; Instruments; Computational modeling; Ultrasonic variables measurement; Frequency measurement; Phase measurement; Ultrasonic transducers; Velocity measurement

Domaines: Traitement du signal et de l'image [eess.SP]

Denis Kouamé, Cheick Guetbi, Jean-Pierre Remenieras, Jean-Marc Girault, Abdeldjalil Ouahabi, et al.. Multiphase Pipe Flow velocity measurements in Strong Colored Noisy Doppler Ultrasound: Parametric and non parametric approaches. IEEE International Ultrasonics Symposium (IUS 1997), Oct 1997, Toronto, Canada. pp.815--818, ⟨10.1109/ULTSYM.1997.663138⟩. ⟨hal-03153375⟩