Ultrasonic imaging using spatio-temporal matched field (STMF) processing--applications to liquid and solid waveguides.
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.
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Laboratoire Ondes et Acoustique, ESPCI, University Denis Diderot, 75231 Paris, France. roskiri.ing@espci.fr
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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