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基于传声器阵列的震后被困人员定位方法研究.docx

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基于传声器阵列的震后被困人员定位方法研究 Title:ResearchonLocatingTrappedIndividualsafterEarthquakesBasedonMicrophoneArray Abstract: Earthquakescancauseseverestructuralcollapses,resultingintheentrapmentofindividuals.Rapidandaccuratelocationoftrappedindividualsiscrucialforeffectiveurbansearchandrescueoperations.Thispaperexplorestheuseofmicrophonearraysforlocatingtrappedindividualsafterearthquakes.Theproposedmethodinvolvesanalyzingthesoundsignalsemittedbytheindividualsandutilizingadvancedsignalprocessingtechniquestoestimatetheirpositions.Experimentalresultsdemonstratetheeffectivenessandreliabilityofthemethodinlocatingindividualsinreal-worldscenarios. 1.Introduction: Naturaldisasters,suchasearthquakes,oftenleadtocatastrophicconsequences,includingbuildingcollapsesandentrapmentofpeople.Insuchscenarios,locatingtrappedindividualsbecomesofparamountimportanceforeffectiverescueoperations.Traditionalmethodsforlocatingtrappedindividuals,suchasusingsnifferdogsorrelyingonvisualcues,oftenhavelimitations.Thispaperpresentsanovelapproachthatutilizesmicrophonearraystoaccuratelylocateindividualsbasedonthesoundsignalstheyemit. 2.PrincipleofOperation: Themicrophonearraycomprisesmultiplemicrophonesdistributedstrategicallytocapturesoundsignalsfromvariousdirections.Eachmicrophonerecordsthesound,andthesignalsarethenprocessedtoestimatethedirectionofthesoundsource.Byusingadvancedsignalprocessingtechniques,includingtimedelayestimation,beamforming,andsourcelocalizationalgorithms,theproposedmethoddeterminesthespatialpositionofthetrappedindividuals. 3.SoundSignalAnalysis: Thetrappedindividualsproducevarioussounds,includingvocalizations,coughs,ortappingonsurfaces.Thesesoundscarryimportantinformationabouttheirlocation.Theproposedmethodanalyzesthesoundsignalstoextractfeaturesthatcanbeusedforaccuratepositioning.Featuressuchastimedelaybetweenmicrophones,soundintensity,andspectralpropertiesareusedtoestimatethedirectionanddistanceofthesoundsource. 4.SignalProcessingTechniques: Toaccuratelyestimatethedirectionofthesoundsource