简介：Theresearchofpropagationcharacteristicsofair-to-watersoundtransmissionisofgreatimportancetothedetectionofaerialtargetsfromunderwater.Inordertostudythepropagationcharacteristicsofair-to-watersoundtransmissioninshallowwater,StateKeyLaboratoryofAcoustics,InstituteofAcoustics,conductedanexperimentintheSouthChinaSeainMarch,2013.Duringtheexperiment,multi-frequencysignalstransmittedbyahooterhungonaresearchshipwerereceivedbyanunderwaterhydrophone,andthedistancebetweenthehooterandthehydrophonewasfrom2.4kmto9.8kmapproximately.Throughanalyzingexperimentaldatainthiswork,theexperimentalair-to-watertransmissionlossatfrequencies128Hzand256Hzisestimatedupto9.8kminrange,anditsoscillationstructureisevident.Thewave-numberintegrationapproachisusedtosimulatetheoreticalair-to-watertransmissionlosses,whichareingoodagreementwithexperimentalvaluesandtoexplaintheexperimentalair-to-watersoundtransmissioncharacteristics.