Paper Title:
Application of Inverse Methods for Spatial Deconvolution of Pulsed Ultrasound Fields Radiated in Solids
  Abstract

When measuring the ultrasound field, the signal provided by the receiving transducer is affected by its spatial properties. Particularly, the displacement normal to its surface is spatially averaged because of the receiver finite size. In this study, we show using a numerical simulation, the effectiveness of the spatial deconvolution of these effects for a rectangular transducer. For that, three methods allowing the inversion of the aperture effect are tested 1) Wiener’s method; 2) the power spectral equalization (PSE) method, and 3) the maximum a posteriori (MAP) method. The obtained results show that the three methods are able to reconstruct the ultrasound field from the spatially averaged values and the quality of the reconstruction depends strongly upon the signal to noise ratio (SNR) and the spatial frequencies of the ultrasound field investigated

  Info
Periodical
Materials Science Forum (Volumes 636-637)
Edited by
Luís Guerra ROSA and Fernanda MARGARIDO
Pages
1541-1547
DOI
10.4028/www.scientific.net/MSF.636-637.1541
Citation
W. Djerir, T. Boutkedjirt, A. Badidi Bouda, A. Satour, "Application of Inverse Methods for Spatial Deconvolution of Pulsed Ultrasound Fields Radiated in Solids", Materials Science Forum, Vols. 636-637, pp. 1541-1547, 2010
Online since
January 2010
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