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
收藏
页数：8
相关论文
共 50 条
  • [1] One-channel time-reversal in chaotic cavities: theoretical limits
    J Acoust Soc Am, 2 pt 1 (611):
  • [2] One-channel time-reversal in chaotic cavities: experimental results
    J Acoust Soc Am, 2 pt 1 (618):
  • [3] One-channel time-reversal in chaotic cavities: Experimental results
    J Acoust Soc Am, 2 (618-625):
  • [4] One-channel time-reversal in chaotic cavities: Theoretical limits
    Draeger, C
    Fink, M
    JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1999, 105 (02): : 611 - 617
  • [5] One-channel time-reversal in chaotic cavities: Experimental results
    Draeger, C
    Aime, JC
    Fink, M
    JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1999, 105 (02): : 618 - 625
  • [6] Effect of chaos in a one-channel time-reversal acoustic mirror
    Alberti, Alejo
    Wisniacki, Diego A.
    Maffei, Gaston
    Eguia, Manuel C.
    PHYSICAL REVIEW E, 2019, 100 (01)
  • [7] Time-Reversal Acoustics
    Fink, Mathias
    PROCEEDINGS OF THE SECOND HELAS INTERNATIONAL CONFERENCE: HELIOSEISMOLOGY, ASTEROSEISMOLOGY AND MHD CONNECTIONS, 2008, 118
  • [8] Time-reversal acoustics
    Fink, Mathias
    INVERSE PROBLEMS, MULTI-SCALE ANALYSIS AND EFFECTIVE MEDIUM THEORY, 2006, 408 : 151 - 179
  • [9] Time-reversal acoustics in complex environments
    Fink, Mathias
    GEOPHYSICS, 2006, 71 (04) : SI151 - SI164
  • [10] Time-reversal acoustics in biomedical engineering
    Fink, M
    Montaldo, G
    Tanter, M
    ANNUAL REVIEW OF BIOMEDICAL ENGINEERING, 2003, 5 : 465 - 497
12345