Time-reversal in an ultrasonic waveguide

被引：75

作者：

Roux, P

Roman, B

Fink, M

机构：

[1] Laboratoire Ondes et Acoustique, Université Paris VII, URA CNRS 1503

来源：

APPLIED PHYSICS LETTERS | 1997年 / 70卷 / 14期

关键词：

D O I：

10.1063/1.118730

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The aim of this letter is to study, by using a time-reversal mirror (TRM), ways to overcome the distortions induced by multipaths in an acoustic transmission. A set of experiments is performed with a TRM made of 96 reversible transducers and results will be presented. One result is related to the high focusing property obtained with a TRM working in a bounded channel. It will be shown that the time-reversed beam is much thinner than the one measured in an unbounded medium. The second result concerns the time compression observed for the time-reversed acoustic pulse. The influence of the number of TRM elements on the time compression is discussed. (C) 1997 American Institute of Physics.

引用

页码：1811 / 1813

页数：3

共 6 条

[1] FOCUSING IN TRANSMIT-RECEIVE MODE THROUGH INHOMOGENEOUS-MEDIA - THE TIME-REVERSAL MATCHED-FILTER APPROACH [J].