Basics of Nonlinear Time Reversal Acoustics

被引：0
|
作者：
Hedberg, Claes [1 ]
机构：
[1] Blekinge Inst Technol, S-37179 Karlskrona, Sweden
来源：
MATHEMATICAL MODELING OF WAVE PHENOMENA | 2009年 / 1106卷
关键词：
Acoustic time reversal; acoustic back propagation; nonlinear attenuation; shock front reversal; PHASE-CONJUGATION; OSCILLATIONS;
D O I：
暂无
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
An investigation of time reversal of nonlinear and non-dissipative or dissipative plane sound waves was made. Propagation and back propagation is time reversal invariant only when the dissipation is zero and the wave has not been shocked. A wave that has shocked has irretrievably lost part of its content. Still, if the wave and its derivatives are considered continuous there remain in theory forever information about the original signal. Factors like numerical accuracy and noise naturally set limits in practical situations.
引用
收藏
页码：164 / 172
页数：9
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