1 Ocak 2006 Dergi makalesi Açık Erişim

Sabra, Karim G.; Roux, Philippe; Song, Hee-Chun; Hodgkiss, William S.; Kuperman, W. A.; Akal, Tuncay; Stevenson, J. Mark

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  <dc:creator>Sabra, Karim G.</dc:creator>
  <dc:creator>Roux, Philippe</dc:creator>
  <dc:creator>Song, Hee-Chun</dc:creator>
  <dc:creator>Hodgkiss, William S.</dc:creator>
  <dc:creator>Kuperman, W. A.</dc:creator>
  <dc:creator>Akal, Tuncay</dc:creator>
  <dc:creator>Stevenson, J. Mark</dc:creator>
  <dc:date>2006-01-01</dc:date>
  <dc:description>For most shallow water waveguides, the backscattered energy measured in a monostatic configuration is dominated by ocean bottom reverberation. A selected time-gated portion of the measured reverberation signal is used to provide a transfer function between a time-reversal array and a corresponding range interval on the bottom. Ultrasonic and at-sea experiments demonstrate the focusing capabilities of a time-reversal array along the rough bottom interface using these reverberation signals only. The iterative time-reversal technique facilitates robust focusing along the ocean bottom, with little signal processing effort involved and a priori information of the environment. This allows for enhanced detection and localization of proud or buried targets in complex shallow water environments. A passive implementation of the iterative time-reversal processing is used to construct reflectivity maps, similar to a sonar map, but with an enhanced contrast for the strongest reflectors (or scatterers), at the water-bottom interface. Ultrasonic and at-sea experiments show that targets on the seafloor located up to 400 wavelengths from a time-reversal array are detectable in the presence of bottom reverberation. (c) 2006 Acoustical Society of America.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/95075</dc:identifier>
  <dc:identifier>oai:zenodo.org:95075</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 120(3) 1305-1314</dc:source>
  <dc:title>Experimental demonstration of iterative time-reversed reverberation focusing in a rough waveguide. Application to target detection</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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