擴(kuò)頻信號(hào)檢測(cè)理論與最佳干擾方法研究.pdf

1、代號(hào)埋70!分類(lèi)號(hào)TN97學(xué)號(hào)0408420209密級(jí)公開(kāi)面簧它手抖緞兜警碩士學(xué)位論文題(中、英文)目擴(kuò)頻信號(hào)檢測(cè)理論與最佳干擾方法研究Re卿on—yh_eo_ry__of_Spread—Spectr蚺一墅鯉；andMethodofBestJaxming作者姓名孫勇指導(dǎo)教師姓名、職務(wù)陳南教授學(xué)科門(mén)類(lèi)工科學(xué)科、專(zhuān)業(yè)通信與信息系統(tǒng)提交論文日期二oo七年一月AbstractAbstractSpreadSpectrumSystemhasas仃o

2、ngantijammingcapabilityandstrongsecurityItcanbeusedformultipleaccesscommunicationsSpreadSpectrumSystemshasbeenwidelyusedforantijammingcommunicationThispaperisastudyofthespreadspectrumsignaldetectioninnoncooperationcondit

3、ionThispaperpresentsspreadspectrumsignalsthatincludesDirectSequenceSpreadSpactrum(DSSS)andFrequencyHoppingSpreadSpectrum(FHSS)，itisfocusedonresearchthedetectionmethodofbothandbrieflyintroducemethodofjammingMeanwhilethepa

4、perconsidersparametersneedtobedetectedfromtheperspectiveofjammingThecurrentdetectionmethodofspreadspectrumsignalisnotidealandnecessarytoexploremoreeffectivedetectionmethodWecombinemethodofwavelettransformandcyclespectral

5、correlationtodetectspreadspectrumsignalThewavelettransformistheengineeringapproach；weshouldchoosedifferentmotherwaveletindifferentapplicationbackgroundThispaperchoseMorletwaveletasmotherwaveletbecausethatMorletwaveletisc

6、omplexwaveletbutmanyofotherwaveletsalerealonesThekindofthiswaveletnotonlyhasbetterperformancebutalsohaveasimplermoduleThepaperhasaacademicderivationandfactualsimulationaboutrationalsettingofparametersofwaveletwhenusingth

7、iswaveletThepapergivedetectionmethodandsimulationresultofBPSKandBFSKsignals，thenitcompareswithothermethodsFinallythedirectionofdevelopmentofnoiseeliminationwhendetectingsignalandsignaldetectionwithwavelettransformisgiven