title: Ultrasonic imaging using spatio-temporal matched field (STMF) processing--applications to liquid and solid waveguides.
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.
authors.affiliation: Laboratoire Ondes et Acoustique, ESPCI, University Denis Diderot, 75231 Paris, France. roskiri.ing@espci.fr
authors.forename: R K
authors.initials: RK
authors.lastname: Ing
authors.forename: M
authors.initials: M
authors.lastname: Fink
mesh_terms: D000162:Acoustics; D001698:Biomedical Engineering; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008962:Models, Theoretical; D012542:Scattering, Radiation; D014159:Transducers; D014463:Ultrasonography / Q000706:statistics & numerical data