Ultrasonic imaging using spatio-temporal matched field (STMF) processing-applications to liquid and solid waveguides

Author

Ing, Ros K. ; Fink, Mathias

Author_Institution

Lab. Ondes et Acoustique, Univ. Denis Diderot, Paris, France

Volume

48

Issue

2

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

374

Lastpage

386

Abstract

This paper is devoted to imaging defects in liquid and solid ultrasonic waveguides. A new ultrasonic imaging technique, based on the spatio-temporal Green functions computation and cross-correlation, is presented. This technique extends the concept of matched field processing (MFP) used in ocean acoustics. Results of experiments conducted in water and in a solid Duralumin bar show that a strong improvement of the spatial resolution is observed with this MFP.

Keywords

Green´s function methods; acoustic correlation; acoustic waveguides; rectangular waveguides; ultrasonic imaging; underwater sound; Green functions; STMF processing; cross-correlation; defects; liquid and solid waveguides; solid Duralumin bar; solid waveguides; spatial resolution; spatio-temporal matched field processing; ultrasonic imaging; ultrasonic waveguides; Acoustic scattering; Acoustic waveguides; Array signal processing; Delay lines; Focusing; Green function; Liquid waveguides; Solids; Ultrasonic imaging; Ultrasonic transducers; Acoustics; Biomedical Engineering; Humans; Image Processing, Computer-Assisted; Models, Theoretical; Scattering, Radiation; Transducers; Ultrasonography;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/58.911720

Filename

911720