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Author Dinh-Quy Nguyen ♦ Xuexin Yap ♦ Woon-Seng Gan ♦ Yong-Kim Chong
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2008
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Focusing ♦ Eigenvalues and eigenfunctions ♦ Scattering ♦ Transducers ♦ Numerical models ♦ Media ♦ Acoustics ♦ time reversal (TR) ♦ DORT method ♦ Green’s function ♦ numerical technique
Abstract Recently, a time reversal operator method that is applied to ultrasonic detection and focusing with arrays of transducers has been proposed. This method is known as the DORT (Decomposition de lpsilaOperateur de Retournement Temporel). The DORT method requires the measurement of the inter-element impulse responses of the propagating medium for all pairs of elements in the array. Time reversal operator (TRO) is deduced from these responses and diagonalized. The eigenvector and eigenvalue of TRO is analyzed to perform selective focusing on different scatterers. We develop the numerical technique of DORT method by using the Greenpsilas function estimation in homogeneous and multiple scattering medium. This technique can set up the feasibility study of DORT method to perform selective focusing on multiple scatterers.
Description Author affiliation: Digital Signal Process. Lab., Nanyang Technol. Univ., Singapore (Dinh-Quy Nguyen; Xuexin Yap; Woon-Seng Gan; Yong-Kim Chong)
ISBN 9781424422401
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2008-07-21
Publisher Place Germany
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 3.48 MB
Page Count 4
Starting Page 221
Ending Page 224


Source: IEEE Xplore Digital Library