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Titolo:
Spatial resolution of time-reversal arrays in shallow water
Autore:
Kim, S; Edelmann, GF; Kuperman, WA; Hodgkiss, WS; Song, HC; Akal, T;
Indirizzi:
Scripps Inst Oceanog, Marine Phys Lab, La Jolla, CA 92093 USA Scripps InstOceanog La Jolla CA USA 92093 ys Lab, La Jolla, CA 92093 USA SACLANT Undersea Res Ctr, I-19138 La Spezia, Italy SACLANT Undersea Res Ctr La Spezia Italy I-19138 -19138 La Spezia, Italy
Titolo Testata:
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
fascicolo: 2, volume: 110, anno: 2001,
pagine: 820 - 829
SICI:
0001-4966(200108)110:2<820:SROTAI>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHASE-CONJUGATION; ACOUSTICS; INVERSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Engineering, Computing & Technology
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, S Scripps Inst Oceanog, Marine Phys Lab, La Jolla, CA 92093 USA Scripps Inst Oceanog La Jolla CA USA 92093 La Jolla, CA 92093 USA
Citazione:
S. Kim et al., "Spatial resolution of time-reversal arrays in shallow water", J ACOUST SO, 110(2), 2001, pp. 820-829

Abstract

A series of time-reversal experiments was performed in shallow water including a range-dependent slope environment. Time-reversal arrays implemented with center frequencies of 445 and 3500 Hz achieved sharp focal regions up to ranges of 30 and 13 km, respectively in 110-130-m shallow water. In thispaper, resolution expressions are derived using an image method to describe the focal sizes achieved with time-reversal arrays in various ocean environments. Analysis for the measured data indicates that the focal size approaches the diffraction limit of an array for given waveguide conditions, i.e., waveguide geometry and attenuation. The measured focal size has implications for the maximum achievable resolution of linear matched-field processing which is a computational implementation of the time-reversal process. (C) 2001 Acoustical Society of America.

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Documento generato il 08/07/20 alle ore 08:09:40