Accession Number : ADA618033


Title :   Bayesian Inversion of Seabed Scattering Data


Descriptive Note : Annual rept.


Corporate Author : VICTORIA UNIV (CANADA) SCHOOL OF EARTH AND OCEAN SCIENCES


Personal Author(s) : Steininger, Gavin A ; Dosso, Stan E ; Dettmer, Jan ; Holland, Charles W


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA618033


Report Date : 30 Sep 2014


Pagination or Media Count : 10


Abstract : The long-term goals of this work are to improve ocean acoustic reverberation modeling and sonar performance predictions in shallow waters by developing inversion procedures to estimate seabed scattering and geoacoustic properties with uncertainties, as well as investigating the importance of various scattering processes. Important issues include: investigating the angular and frequency dependence of scattering (defining the scattering kernel), determining the dependence of scattering on physical properties of the seabed, and establishing the relative importance between scattering due to rough boundaries at the seafloor and sub-bottom interfaces or at volume heterogeneities. These issues are all key to the ability to invert scattering and/or reflection data for seabed geoacoustic and scattering parameters, and ultimately to the practical inversion of active source reverberation data for rapid environmental assessment applications.


Descriptors :   *ACOUSTIC SCATTERING , *OCEAN BOTTOM , ACOUSTIC REFLECTION , ALGORITHMS , BAYES THEOREM , GEOACOUSTICS , INVERSION , PHYSICAL PROPERTIES , PREDICTIONS , REVERBERATION , SHALLOW WATER , SONAR , UNCERTAINTY


Subject Categories : Physical and Dynamic Oceanography
      Acoustics


Distribution Statement : APPROVED FOR PUBLIC RELEASE