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Proceedings Paper

General conditions for the generation of acoustic bullet waves
Author(s): Paola Gori; Riccardo Borghi; Gabriella Cincotti; Massimo Pappalardo
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Paper Abstract

Acoustic bullet waves are a class of solutions of the scalar wave equation which have the property of maintaining their shape upon propagation, without spreading in space and in time. This is a very interesting issue that suggests the use of acoustic bullets in many fields, among which there is acoustical imaging. In this work, a necessary and sufficient condition for the generation of acoustic bullets is presented and an impulse response for the case of axial symmetry is obtained. These aspects shed light onto the peculiarities of acoustic bullets and give also hints for the practical realization of this kind of fields. Numerical simulations are also presented in order to analyze the departures from the ideal case when using a finite- dimensional aperture. In particular, the performances of 2D transducer arrays, sparse and not, are considered in the simulations.

Paper Details

Date Published: 21 June 1999
PDF: 8 pages
Proc. SPIE 3664, Medical Imaging 1999: Ultrasonic Transducer Engineering, (21 June 1999); doi: 10.1117/12.350666
Show Author Affiliations
Paola Gori, Univ. di Roma III (Italy)
Riccardo Borghi, Univ. di Roma III (Italy)
Gabriella Cincotti, Univ. di Roma III (Italy)
Massimo Pappalardo, Univ. di Roma III (Italy)

Published in SPIE Proceedings Vol. 3664:
Medical Imaging 1999: Ultrasonic Transducer Engineering
K. Kirk Shung, Editor(s)

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