简介:Theyear2018marksthefifthanniversaryoftheOneBeltAndOneRoadinitiative,whichhaslaunchedanewjourneyoflarge-scaleandmulti-formconnectivityinthehistoryofmankind.Atpresent,Chinahasconductedbilateralcooperationwithmanycountriesandregions,andthenumberofcountriesthathavesignedcooperationmemorandaorcooperationplansisincreasing.
简介:Thecriticaltechnicalproblemofunderwaterbottomobjectdetectionisfoundingastablefeaturespaceforechosignalsclassification.Thepastliteraturesmorefocusonthecharacteristicsofobjectechoesinfeaturespaceandreverberationisonlytreatedasinterference.Inthispaper,reverberationisconsideredasakindofsignalwithsteadycharacteristic,andtheclusteringofreverberationinfrequencydiscretewavelettransform(FDWT)featurespaceisstudied.Inordertoextracttheidentifyinginformationofechosignals,featurecompressionandclusteranalysisareadoptedinthispaper,andthecriterionofseparabilitybetweenobjectechoesandreverberationisgiven.TheexperimentaldataprocessingresultsshowthatreverberationhassteadypatterninFDWTfeaturespacewhichdiffersfromthatofobjectechoes.Itisproventhatthereisseparabilitybetweenreverberationandobjectechoes.