短基線時差測向中的高精度時差估計算法研究.pdf

1、東南大學(xué)碩士學(xué)位論文短基線時差測向中的高精度時差估計算法研究姓名：徐捷申請學(xué)位級別：碩士專業(yè)：信號與信息處理指導(dǎo)教師：楊綠溪20060901東南大學(xué)碩上學(xué)位論文AbstractGenerally，thedirectionfindin2receiverbasedonshortbaselinemechanismobtaindiff色rentialTimeofarrivaJ(DToA)byusin2highspeedcircuitSThism

2、ethodcannotbeusedinthecaseofmeasuringDTOAofslowrisingedgeradafpluse1hisanicledealswiIhIhealgorismofhighprecitioDtiIlledelayestimationofIadarsignal，especiallyslowrisingedgeradarsignalsA皿dimposedonthedeVelopmenlofdirection

3、findingequipmentThesummaryofthjsarticleasbelow：1)theconclutionandcomparasionofsometraditionalalgorismInChapterII，thealgorismofBasiccrosscorelationmethod，Generalizedcmsscorelalionmemodhasbeensummerized，andsomeoftherelated

4、schemes，suchastheprincipalofarithmetjc，thescopeofopeTation，advantageanddisadvantageandlimitationofapplicationhasbeendiscussed2)researchonthealgorismofhighprecitionIimedelayestimationofradarsignalThealgorismofAnalyticcros

5、s—Co丌elalion(ACC)，modifiedACC，algorismbasedonmutual—iIlfo珊ationhasbeenputfonvardFirsC，giVingresulIoftheorilaJpr0Ving，describingtheprincipalofalgorismindetail，drawingthediagramofalgorismThenmadesimulationforthealgorismand

6、discussingtheresullindetailFinaUy’givingtheprocesureofdigitalization1nChapterIlIthealgorismofAnalyticCross—Correlation(ACC)hasbeenfullyinvestigatedandgetsomeresults，proposedamethodofgeItingtimedelayValuebymakinguseoftheA

7、nalyticfunctionofoross—Conelationfunctiont0confi瑚thepeekofenvelopfuncIion1nthiswayavoidingtheproblemofinferenceofphaseshifIInChapferⅣthealgorismoftimedelayEslimationbasedonmutualinfo珊aIionhasbeenfullyinvestigatedByAnaliz

8、ingandreasoningtheconclutioninsomeanicles，getcingsimplif_ieda培orismbasedonmutuali11fonnationInordertosolvetheproblemofhighprecitionalgorismoftimedelayEstimatjontowardsconventionalradarsi2nals，InChapterV，thealgorismofJHod

9、ifiedAnalyticCross—Correlatjon(ACC)hasbeendiscussed’byHilbenTransfoHntogettheAnalyticfunction尺(foffunction尺(r)，lhengettheenvelopfunctionI足(f—d)；f詹(r)IofR(f)1nthisway，theRobustnessofalgorismagainstphaseofca玎ierwavehasbeen

10、improved，andthepresitionofestimationcanbeimprovedbyinterpolationIIllastChapter，themodelsofsimula“onofsomealgorismhasbeenestablishedandgivetheresultsT1lereper|bnnancealsohasbeendiscussedIntheendofthisChapter，theschemefbro

11、perationofdirectionfindingreceiverbaSedonshonbaselinemechanismofdifferentialTimeofarrival(DTOA)byusillgcrosscorrelationmethodhasbeendemonstratedandtheresultofexperimentsalsobeenexaminedKey、Ⅳords：timedelayestimationmutual