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dc.contributor.authorChakraborty, B.
dc.contributor.authorSchenke, H.W.
dc.date.accessioned2009-01-25T06:05:34Z
dc.date.available2009-01-25T06:05:34Z
dc.date.issued1995
dc.identifier.citationUltrasonics, Vol.33; 457-461p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/2362
dc.description.abstractIn this paper a theoretical study is initiated to observe the utility of directional spectral estimation techniques for `arc array' geometries. We examine the suitability of a 15 degrees arc transducer geometry for multibeam bathymetric applications. This geometry is tested using the Bartlett method for varying arc and linear arrays of 30 - elements. We also examine `high resolution techniques' such as the Maximum LIkelihood (ML) method and the Maximum Entropy (ME) methods (different orders), for 16-element arrayof 15 degrees arc. The superiorityof the high resolution methods is seen by examining the patterns of the 15 degrees arc array under multiple source/interference conditions, i.e. the situation for rough terrain or artefactcreating conditions. Furthermore, the 15 degrees arc array geometry is found to be useful for multifrequency applications at different operating wavelengths, which is useful for underwater bathymetric applications
dc.language.isoen
dc.publisherElsevier
dc.rightsCopyright [1995]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subjectarrays
dc.subjectmultibeam sonar
dc.subjectbathymetry
dc.subjecttransducers
dc.subjectechosounding
dc.subjectacoustics
dc.titleArc arrays: studies of high resolution techniques for multibeam bathymetric applications
dc.typeJournal Article


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