One-channel time-reversal acoustics in highly attenuating media

被引：7

作者：

Gliozzi, A. S. ^{[1
]}

Scalerandi, M. ^{[1
]}

Antonaci, P. ^{[2
]}

机构：

[1] Politecn Torino, Dept Appl Sci & Technol, Inst Condensed Matter Phys & Complex Syst, Turin, Italy

[2] Politecn Torino, Dept Struct Geotech & Bldg Engn, Turin, Italy

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2013年 / 46卷 / 13期

关键词：

PROPAGATION; LOCALIZATION; PULSES; SOLIDS;

D O I：

10.1088/0022-3727/46/13/135502

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The efficiency of time reversal acoustics may be strongly affected by attenuation in the presence of a very low Q-factor. This is particularly true when one-channel time reversal is implemented, taking advantage of virtual sources corresponding to the coda of the signal. To face this issue, in this paper, a procedure is proposed, which properly amplifies the recorded signals before back-propagation, in order to optimize both the quality of the focusing, in terms of signal-to-noise ratio, and the symmetry of the reconstructed signal.

引用

页数：8

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