短波跳頻信號精確測頻與解跳研究.pdf

1、電子科技大學(xué)碩士學(xué)位論文短波跳頻信號精確測頻與解跳研究姓名：周良臣申請學(xué)位級別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：呂幼新劉寶璐20030501電子科技大學(xué)碩士論文AbstractSequeneydehoppingis激importanttaeheoffrequencyhoppingsignaldetcctionandreceivewhichrequesttrackingfrequency。on輔搭；∞accordingtotilerea

2、ltimedeterminedcarrierfreqnencgNotknowingthemodulationmodeofthesgnalWackingfreqae辯yeo摶Ve髂onaccordingto穗erealtimedeterminedcentralfrequency(notal黼ysthecarrierfiequencNforexampleSingleSideBandsignalhasnocarrierfrequency)be

3、comesaconsequentwayResolutionofFFTonlydependsonthetimeofsamplingsogiventheapproximateiyfiequeneypositionofhopfragment璐聃gZoom”FFTalgoriItimtodeterminefileprecisionrenalfrequencyofthehopfragmentdecreasesthedemandofarithmet

4、iccapacitythensolvedcontradictionbetweenhightesoIuffonandrealtime。ThereAf#frequencyconversionandfilteringinrealtimedeterminingthecentralfrequencypositionandtrackingfrequencyconversion，ApplingSSBmoduI甓iontheory船conve靠freq

5、uencyanddesampte，we：carlavoidtheinterfusionofnoiseandthesignalbeingdes檔oyedbythemirrorimagespectrumandweearlfihedngatlowsamplingrate濃possib黷Filtering辯lowsamplingandusingpolyphasestructureanddistributearithmetictoimplemen

6、tFIRfihet；wee赫saveconsumedlyeNpresources，ThisthesisdiscussesthedesignodehopplngshortwavefrequencyhoppingsystemUsingabovetechnologyInaddition，towide酶趟signaldirectlyusingZoomFFTcannotavoid群室oflargeamountofpoi绱弦mdifficultly

7、attainrealtime。thisthesisdevelopmentanalgorithmofspectrumanalysisforwidebandsignalmans群端t魏瓣analysisalgoriffrmofwidebandsignalhaeadon掰露fitterbank。anditsimplementationstructurewhichsolvedcontradictionbetweenhighresohrtiona

8、ndrealtime礴widebandsign蝣spcc露umanalysis’Themaincontentsofthisflesisincludethetheoryofdigitalsignalprocessing搭黻filmrlngdesigntheoryandimplementation，multi—ratedigitalsignalprocessing，filterbanktheoryNarrowbandsignalQuadra

9、turemodulationSingtesldebandmodulationZoomFFT)thedesignofthesystemprojectandthe$套囂霉￡r韓辨analysisalgorithm。fwidebandsignalbasedon#牲filterbankwithit’simplementationstracture～theintrodactiorlofthemaindwl㈣appliedinthesysteman