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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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/95075</identifier>
  <creators>
    <creator>
      <creatorName>Sabra, Karim G.</creatorName>
      <givenName>Karim G.</givenName>
      <familyName>Sabra</familyName>
    </creator>
    <creator>
      <creatorName>Roux, Philippe</creatorName>
      <givenName>Philippe</givenName>
      <familyName>Roux</familyName>
    </creator>
    <creator>
      <creatorName>Song, Hee-Chun</creatorName>
      <givenName>Hee-Chun</givenName>
      <familyName>Song</familyName>
    </creator>
    <creator>
      <creatorName>Hodgkiss, William S.</creatorName>
      <givenName>William S.</givenName>
      <familyName>Hodgkiss</familyName>
    </creator>
    <creator>
      <creatorName>Kuperman, W. A.</creatorName>
      <givenName>W. A.</givenName>
      <familyName>Kuperman</familyName>
    </creator>
    <creator>
      <creatorName>Akal, Tuncay</creatorName>
      <givenName>Tuncay</givenName>
      <familyName>Akal</familyName>
    </creator>
    <creator>
      <creatorName>Stevenson, J. Mark</creatorName>
      <givenName>J. Mark</givenName>
      <familyName>Stevenson</familyName>
    </creator>
  </creators>
  <titles>
    <title>Experimental Demonstration Of Iterative Time-Reversed Reverberation Focusing In A Rough Waveguide. Application To Target Detection</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2006</publicationYear>
  <dates>
    <date dateType="Issued">2006-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/95075</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1121/1.2227377</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">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.</description>
  </descriptions>
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