摘要
Shearprobeworksunderatoughenvironmentwheretheturbulencesignalstobemeasuredareveryweak.Themeasuredturbulencesignalsoftencontainalargeamountofnoise.Duetowidefrequencyband,noisesignalscannotbeeffectivelyremovedbytraditionalmethodsbasedonFouriertransform.Inthispaper,awaveletthresholdingdenoisingmethodisproposedforturbulencesignalprocessinginthatwaveletanalysiscanbeusedformulti-resolutionanalysisandcanextractlocalcharacteristicsofthesignalsinbothtimeandfrequencydomains.Turbulencesignaldenoisingprocessismodeledbasedonthewavelettheoryandcharacteristicsoftheturbulencesignal.Thethresholdanddecompositionlevel,aswellastheprocedureoftheturbulencesignaldenoising,aredeterminedusingthewaveletthresholdingmethod.TheproposedwaveletthresholdingmethodwasvalidatedbyturbulencesignaldenoisingoftheWesternPacificOceantrialdata.Theresultsshowthatthepropsedmethodcanreducethenoiseinthemeasuredsignalsbyshearprobes,andthefrequencyspectrumsofthedenoisedsignalcorrespondwelltotheNasmythspectrum.
出版日期
2012年02月12日（中国期刊网平台首次上网日期，不代表论文的发表时间）
