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TheResearchofWelchMethodinEstimateofPowerSpectram
FANYu , WUZhen-yi
(Dept.ofPhysics,ChangshuCollege,Changshu215500)
Abstract:Inthefieldofclassicalchart,Welchputforwardtoamendperiodictable,whichisprovedtobeeffectiveinap2pliance.Itissimpleandeasytounderstand,besides,itisconvenienttocalculate.Undermanyconditions,itsfrequencydistinctionandestimatevariancecansatisfythepracticalappliance.ThispaperisabouttheanalysisofcharacteristicsofWelch’sestimatechat,itsadvantagesanddisadvantagesaswell.
Keywords:Welch;PowerSpectramestimation;Windowfunction
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