光子計(jì)數(shù)激光雷達(dá)信號(hào)的EMD降噪方法研究.pdf

1、聲明本學(xué)位論文是我在導(dǎo)師的指導(dǎo)下取得的研究成果，盡我所知，在本學(xué)位論文中，除了加以標(biāo)注和致謝的部分外，不包含其他人已經(jīng)發(fā)表或公布過(guò)的研究成果，也不包含我為獲得任何教育機(jī)構(gòu)的學(xué)位或?qū)W歷而使用過(guò)的材料。與我一同工作的同事對(duì)本學(xué)位論文做出的貢獻(xiàn)均己在論文中作了明確的說(shuō)明。捌6夠月凇日學(xué)位論文使用授權(quán)聲明南京理工大學(xué)有權(quán)保存本學(xué)位論文的電子和紙質(zhì)文檔，可以借閱或上網(wǎng)公布本學(xué)位論文的部分或全部?jī)?nèi)容，可以向有關(guān)部門或機(jī)構(gòu)送交并授權(quán)其保存、借閱或上網(wǎng)

2、公布本學(xué)位論文的部分或全部?jī)?nèi)容。對(duì)于保密論文，按保密的有關(guān)規(guī)定和程序處理。知話年弓月弘日Absnact碩士學(xué)位論文AbstractProceedingfromthesignalfeatureoftimecorrelatedsinglephotoncountinglaserradarwediscusstheradarsignalnoisereductionbasedonEmpiricalModeDecomposition，whichcou

3、ldanalysisnonlinearandnon—stationarytimeseriesautomaticallyFirstofall，theprincipleofTCSPClaserradarandEMDshiftingprocessarerecommended，andonthebaseofexistingEMDreducingmethods，anewdistinguishingapproachofcorrelativemodes

4、isproposedtOpickoutnoisedominantIMFsSecondlNbyimprovingdirect—thresholdandindirect—thresholdde—noisingprocesses，wecomeupwithanadaptivethresholdmethod，inaddition，wealsocontrasttheresultsofsomestationaryandnon—stationarysi

5、gnalsimulationexperimentsusingdifferentreducingmethodsFinallywedesignvariableradarrangingexperiments，andputforwardanewsmooththresholdmethodtOlowernoiselevelofthemeasuredsignals，besides，wealsodesignapieceofsoftwaretododen

6、oisingworksTheresultsshowthat：thedistinguishapproachofcorrelativemodesmaydiscriminatenoisedominantIh／[fseffectivelywhiletheSNRrangesInaddition，comparedwithdirectorindirectthresholddenoisingprocess，theadaptivethresholdmet

7、hodshowsbetterdenoisingresults，then，italsodoesbetterinadaptation，noisereductioneffectsofsignalswithdifferentSNRanddetailspreservingbycontrastwithFouriertransform，WaveletTransformandEMDtimescalemethodsBeyondthat，thesmooth