聲場分布分析及高速聲光相關系統(tǒng)研究.pdf

1、電子科技大學碩士學位論文聲場分布分析及高速聲光相關系統(tǒng)研究姓名：錢勛學申請學位級別：碩士專業(yè)：光學指導教師：劉藝20090501ABSTRA(了rABSTRACTWhentheultrasonicwavethroughthemedium，lightwavesandsoundwavesinthemediumofinteractioncouldproducesimilardiffractiongrating，”Ultrasonicdiffr

2、action”，Usingsoundwavesandlightwavesinthemedialawofthisinteraction，Ontheonehand，wecoulduseultrasonicbeamtocontrolthefrequencydirectionandintensityontheotherhand，othersignalscouldalsobeconvertedtoopticalsignalsforanalysis

3、Inthesignalprocessingtwosignals、relatedoperationswereinthesignalprocessingimportantmeansThoughthetraditionalradiofrequencysignalcouldrealizetherelatedoperating，it、SspeedwasslowandthesystemwascomplexTheacousto—opticsystem

4、’Scorrelationtechniquewas011ekindofreal—timewidebandsignalparsingtechniqueInrecentyears，alongwiththewidefrequencycommunication’Sdevelopment，thisneededtoprocessthemassivehighspeedsignals，SOthatsetahigherrequesttotheacoust

5、o—opticsystemInthisarticlewemadethefollowingseveralaspectsresearchesfromthetheoryandtheexperimentaspecttotheacousto—opticsystem’scharacteristic：1Embarkingbytheparameterinteractionviewpointhasderivedtheacousto—opticcoupli

6、ngwaveequation，andhasanalyzedinthemediumacousto—opticinteractionruleusingthemomentummatchandthemomentumunbalanceCarryingonthesimulationandtheexperimentalstudytoPMacousto—opticscomponenthasmadeacoustoopticdiffractioneffic

7、iencycharacteristiccurveTheexperimentobtainedresultandthetheorytalliedbasically2Embarking舶mtheRayleighintegral，hasgiventheaxialsymmetryultrasonictransducer’Ssoundfielddistributioncharacteristic，andhasgiventhebriefanalysi

8、sWithspectralanalysis’sviewpoint，thespatialacoustofielddistributionwhichradiatedtotheacousticsourcehascarriedontheanalysis，themodellingandthecomputationThroughanalysisandmodellingsimulation，hasexplaineddifferentcrystalpo