Preliminary analysis of left-right ambiguity resolution performance for twin-line array

(整期优先)网络出版时间:2007-01-11
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Itiswellknownthatthesinglelinearraysonarcan'tidentifywhetherthetargetcomesfromleftorright.Multi-linearrayprovidesthepossibilitytosolvetheleft-rightambiguityproblem.Theperformanceofleft-rightresolutionfortwin-linearrayisdescribedinthispaper.Itisshownthatthesuppressionratio,whichisdefinedastheratiooftheresponseinthesteeringdirectiontooppositesymmetricaldirection,canbeconsideredasanindexforevaluatingtheabilityofsolvingleft-rightambiguity.Thecharacteristicsofsuppressionratioisdiscussed.Thetheoreticalexpressionforsuppressionratioandsomenumericalresultsareillustrated.Theresultoftheoreticalanalysiscanbeusedindesignoftwin-linearraysonar.