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dc.contributor.authorScandrett, Clyde L.
dc.contributor.authorBaker, Steven R.
dc.date1999-12
dc.date.accessioned2012-11-01T22:59:24Z
dc.date.available2012-11-01T22:59:24Z
dc.date.issued1999-12
dc.identifier.urihttp://hdl.handle.net/10945/15428
dc.description.abstractAn investigation into the applicability and accuracy of Pritchard's approximation for closely packed transducer arrays is undertaken. A new, modal Pritchard approximation is developed, based upon normal modes of the acoustic medium, and is tested for arrays of acoustically hard spheres to ascertain its accuracy in determining the mutual acoustic radiation impedance between array elements. For ka=1, it is found that the modal Pritchard approximation works quite well in approximating the mutual radiation impedance of a two element array, even for relatively close spacing, but for arrays of three or more scatterers in close proximity, the approximation may have relatively large errors. The effect of neglecting inter-element scattering is analyzed for the monopole to monopole scattering of various configurations of a three element array and a sixteen element double line array.en_US
dc.description.sponsorshipOffice of Naval Research (ONR321SS)en_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.titlePritchard's approximation in array modelingen_US
dc.typeTechnical Reporten_US
dc.subject.authorSensorsen_US
dc.subject.authorSonar Arraysen_US
dc.subject.authorSonar Transducersen_US
dc.subject.authorUnderwater Acousticsen_US
dc.description.funderN0001499WR30167en_US
dc.identifier.oclcocm298838331
dc.identifier.npsreportNPS-UW-99-001


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