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dc.contributor.authorBaldacci, Alberto
dc.contributor.authorHaralabus, Georgios
dc.date.accessioned2018-10-11T14:09:27Z
dc.date.available2018-10-11T14:09:27Z
dc.date.issued2006/08
dc.identifier24990
dc.identifier.govdocNURC-PR-2006-013
dc.identifier.urihttp://hdl.handle.net/20.500.12489/603
dc.description.abstractIn active sonar detection the background interference is reduced through normalization prior to applying a detection threshold. From the two mainstream normalization algorithms, i.e. the sliding window and the split window, the latter places guard bands around the point of interest to avoid a spill of the target's energy into the background calculation. The size of the guard bands has a strong effect on normalization: if it is too narrow, the target's energy biases the background estimation; if it is too large, the background estimate at one location is based on background samples too far away from that point. During recent sea trials strong changes in system performance, attributed to inappropriate normalization, have been experienced. An approach to overcome this problem by means of an adaptive normalization window that takes into account the geometry of the scenario and the environmental conditions (time spreading) is presented.
dc.format9 p. : ill. : digital, PDF file
dc.languageEnglish
dc.publisherNURC
dc.sourceIn: UDT Europe 2005, Underwater Defence Technology Europe, Amsterdam, The Netherlands, 21-23 June 2005
dc.subjectRay tracing
dc.subjectActive sonar
dc.subjectSignal processing
dc.titleAdaptive normalization of active sonar data
dc.typeReprint (PR)
dc.typePapers and Articles


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