簡介：重慶大學(xué)碩士學(xué)位論文基于多AGENT的航天發(fā)射應(yīng)急處理系統(tǒng)研究姓名郭茂耘申請學(xué)位級別碩士專業(yè)控制理論與控制工程指導(dǎo)教師柴毅20040428重慶大學(xué)碩士學(xué)位論文英文摘要ABSTRACTTLLISDISSERTATIONANALYZEDTHECONCEPTPROPERTYANDTHEBASICTHEORYOFTHEEMERGENCYDECISIONTHEDISSERTATIONALSOINTRODUCEDTHEPROCESSANDCHARACTERISTICOFTHESPACELAUNCHINGANDTHEEMERGENCYPROCESSINGANDDECISIONSYSTEMISESTABLISHEDWITHTHEPARTICULARANALYZINGTHEFUNCTIONOFEACHMODULEINTHESYSTEM，CONSIDERINGTHECOMPLEXITYANDTHEHIGHRISKSOMERESEARCHISDONEONTHEMULTIAGENTINTHEDISSERTATION，SUCHASTHESTRUCTUREOFTHEAGENT，COMMUNICATIONANDCOOPERATIONAMONGTHEMULTIAGENTSANDMORE，THISDISSERTATIONPOINTEDOUTTHENECESSITYANDTHEFEASIBILITYOFTHEESTABLISHMENTOFEMERGENCYPROCESSINGANDDECISIONSYSTEMFORSPACELAUNCHINGITALSOGAVEOUTTHEMETHODFORESTABLISHINGTHESYSTEM、ⅣITLLTHETECHNOLOGYOFTHEMULTIAGENTINTHISDISSERTATION，TWOCLASSAREDESIGNEDWHICHARETHEMANAGINGANDCOOPERATINGAGENTCLASSANDFUNCTIONALAGENTCLASSWITHTHEIRREFERENCING，LEARING，KNOWLEDGEBASE，MODELBASEANDBLACKBOARDANDITISDISCUSSEDTHATREALIZATIONOFTHESYSTEMUTILIZINGTHETECHNOLOGYOFTHEOOPANDMULTITHREADINTHISDISSERTATION，THEFOLLOWINGHASBEENDONEIINTRODUCTIONOFT11EBASICCONEEDTANDCHARACTERISTICOFTHECRISISANDCRISISEMERGENCYCRISISMODEL，EMERGENCYSTEPANDITSCHARACTERISTICIIITINTRODUCEDOFTHETHEORYANDAPPLICATIONOFTHEMULTIAGENTANDTHESTRUCTUREOFTHEAGENTRESEARCHINGHASBEENDONEONTHEMANNERSOFTHECOMMUNICATIONANDCOOPERATINGBETWEENTHEMULTIAGENTSⅢTHEPROCESSANDCHARACTERISTICOFSPACELAUNCHINGHASBEENANALYZEDANDTHEEMERGENCYPROCESSINGANDDECISIONSYSTEMFORSPACELAUNCHINGHASBEENESTABLISHEDⅣTHEEMERGENCYPROCESSINGANDDECISIONSYSTEMFORSPACELAUNCHINGBASEDONMULTIAGENTHASBEENESTABLISHEDONTHEBASISOFTHESTRUCTUREOFITVTWOCLASS，THEMANAGINGANDCOOPERATINGAGENTCLASSANDFUNCTIONALAGENTCLASS，AREDESIGNEDANDSOMEMAJORALGORITHMHASALSOSTUDIEDANDSOMEDISCUSSIONHASBEENDONEONTHEMETHODOFMULTITHREADKEYWORDSCRISISEMERGENCYAGENT，SPACELAUNCHING，BLACKBOARDSYSTEMII

簡介：浙江大學(xué)碩士學(xué)位論文航天電連接器失效率驗(yàn)證試驗(yàn)方法的研究姓名崔杰申請學(xué)位級別碩士專業(yè)機(jī)械設(shè)計(jì)及理論指導(dǎo)教師陳文華盧獻(xiàn)彪20040201塑堅(jiān)查蘭堡圭堂垡堡奎ABSTRACTINTHEDISSERTATIONTHEMODELY1LX1419ELECTRICALCONNECTORASTHEOBJECT，RELIABILITYDEMONSTRATIONTESTMETHODISRESEARCHEDDEEPLVFIRST，BRIEFLYSTATEDTHEDEVELOPEDHISTORYOFRELIABILITYRESEARCHANDCURRENTSITUATIONATHOMEANDABROADTHERELIABILITYTESTMETHODANDTHEDEVELOPINGTRENDOFRELIABILITYDEMONSTRATIONTESTTHESTATISTICALANALYSISMETHOD，THEDEVELOPINGHISTORYANDCURRENTSITUATIONOFDEMONSTRATIONTHEORY，THECURRENTSITUATIONANDEXISTINGPROBLEMSOFELECTRICALCONNECTORSRELIABILITVRESEARCHEDSECOND，THROUGHANALYZINGTHEFAILUREMEEHANISMOFEIEETRICALCONNECTORS，ANDCOMBININGWITHTHETHEORYOFPROBABILITYANDSTATISTICS，SETUPARELIABILITYSTATISTICALMODELOFELECTRICALEONNECTORSAFFECTEDONTEMPERATURESTRESS，LAIDAFOUNDATIONFORWORKINGOUTELECTRICALCONNEEFORSRELIABILITYDEMONSTRATIONTESTPLANSTHIRDESTABLISHEDCENSORINGIDEMONSTRATIONTESTPLANSOFELECTRICALCONNECTORSUNDERACCELERATEDSTRESSPROPOSEDTHEWAYOFHOWTOESTIMATETHERELIABIIITVLEVELFURTHERACCORDINETOTHEDEMONSTRATIONTESTRESULTPROPOSEDTHEEVALUATIONMETHODOFCENSORINGIDE【NONSTRATIONTESTPLANSBYSIMULATIONANDTHESIMULATIONRESUITSHOWSTHATTHEDEMONSTRATIONPLARTSHADBEENESTABLISHEDARESATISFIEDWITHTHECONCERTEDDEMANDPOURTHESTABLISHEDCENSORINGIIDEMONSTRATIONTESTPLANSOFELECTRICALCONNECTORSUNDERACCELERATEDSTRESSPROPOSEDTHEWAYOFHOWTOESTIMATETHERELIABILITYIEVELFURTHERACCORDINGTOTHEDEMONSTRATIONTESTRESULTPROPOSEDTHEEVALUATIONMETHODOFCENSORINGIIDEMONSTRATIONTESTPLARTSBYSIMULATIONANDTHEDEMONSTRATIONRESULTSHOWSTHATTHEDEMONSTRATIONPLANSHADBEENACCEPTINGCRITERION，ANDTHERESULTSHOWSTHATTHROUGHOPTIMIZINGTHEACCEPTINGCRITERIONUNDERTHECONDITIONOFTESTPRECISIONKEEPINGFIXED，THETESTTIMEMAYBESHORTENEDGREATLYFIFTH，WITHTRANSFERRINGWEIBULLDISTRIBUTIONINTOEXPONENTIALDISTRIBUTION，THESEQUENTIALCOMPLIANCEMETHODANDSIMULATIONEVALUATIONMETHODAREDISCUSSEDFORWEIBULLDISTRIBUTIONTHEMODELY1IX一1419ELECTRICALCONNECTORISTAKENFOREXAMPLE，THESEQUENTIALCOMPLIANCEPLANSOFFAILURERATEAREFORMULATEDTHERESULTOFEVALUATINGOFTHECOMPLIANCEP1ANSHOWSTHATTHEMETHODOFSEQUENTIALCOMPLIANCEISFEASIBLEANDTHEP1ANISREASONABLESIXTHESTABLISHEDBAYESIANDEMONSTRATIONTESTPLARTSOFELECTRICALCONNECTORSUNDERACCELERATEDSTRESSCOMPAREDTHEDEMONSTRATIONPLANSUNDERCLASSICALSTATISTICALTHEORYANDDEMONSTRATIONPLANSUNDERBAYESIANSTATISTICALTHEORYTHECOMPARISONRESULTSHOWSTHATTHETESTTIMEOFDEMONSTRATIONPLANSESTABLISHEDBYBAYESIANSTATISTICALTHEORYISSHORTENEDGREATLYPROPOSEDTHEEVALUATIONMETHODOFBAYESIAN

簡介：哈爾濱工業(yè)大學(xué)博士學(xué)位論文計(jì)算智能方法在航天器故障診斷中的應(yīng)用研究姓名谷吉海申請學(xué)位級別博士專業(yè)飛行器設(shè)計(jì)指導(dǎo)教師姜興渭20050301蹬爾濱工韭丈學(xué)工學(xué)薅士學(xué)經(jīng)論文感器豹卡醒、運(yùn)鑣差幫；基臻盞三耱鼓薅模式進(jìn)行了仿奏診叛，取褥了理怒熬結(jié)果。該方法為缺少故障樣本數(shù)據(jù)情況下的傳感器故障診斷問題提供了一個(gè)新的思鼴。關(guān)鍵詞計(jì)算智能故障診斷；預(yù)測預(yù)報(bào)；航天囂II

簡介：申請同濟(jì)大學(xué)工程碩士學(xué)位論文航天陀螺撓性接頭的結(jié)構(gòu)設(shè)計(jì)與剛度測試儀研制培養(yǎng)單位機(jī)械工程學(xué)院一級學(xué)科機(jī)械工程二級學(xué)科機(jī)械制造及其自動化研究生王寶富指導(dǎo)教師萬德安教授二OO六年三月ABSTRACTABSTRACTINTHESEYEARS，WITHTHEDEVELOPMENTOFASTRONAUTICSANDAERONAUTICS，THEREAREHIGHERLEVELREQUIREMENTFORAERONAUTICELEMENTSNOTONLYFORPRECISIONANDSTABILITYBUTALSOFORMINITYPEWHICHLEADTOTHEDIFFICULTYONPRECISEMANUFACTURINGANDPERFORMANCETESTIT’SDIFFICULTYTOMEETTHEPRECISEPERFORMANCETESTREQUIREMENTFORTHEKEYCOMPONENT，MINITYPEFLEXIBLEJOINTOFGYROSCOPE，USEDONAERONAUTICTOOLBYTHECONSTRAINTOFSMALLSIZE，WEAKRIGIDITY，EASINESSTODEFORM，DIFFICULTYTOLOCATEANDTOMESSUREIT’STHEPURPOSEOFTHISDISSERTATIONTODEVELOPPROPERTESTINSTRUMENTOFBENDINGRIGIDITYFORMINITYPEFLEXIBLEJOINTOFGYROSCOPETEDUCETHETESTELLORANDMEETTHEREQUIREMENTFORPRECISIONANDSTABILITYTHEBEGINNINGOFTHISPAPERISFROMTHETHEORYOFDYNAMICALLYTUNEDGYROSCOPE’SSTRUCTUREANDTHEEMPHASESISONTHEANALYSESOFFLEXIBLEJOINT’SSTRUCTURE，POINTOUTIT’SIMPORTANCEANDTHEWORKINGPRINCIPLE，WHICHMAKETHEBASEFORUNDERSTANDINGTHEMEASUREMENTPRINCIPIUMOFBENDINGRIGIDITYFORFLEXIBLEJOINTACCORDINGTOTHEDEFORMINGANDLOADINGCHARACTERISTICSOFMINITYPEFLEXIBLEJOINTOFGYROSCOPE，INTHISPAPERSTUDYONIT’SSTRUCTUREPRINCIPLEANDELASTICDEFORMCHARACTERISTICISDEPLOYED，ESPECIALLYONTHEEXAMPLEOFTHINWALLGIRDERWITHPUREBENDING，WHICHGIVEABASETIGHTMEASNRETHEBENDINGRIGIDITYOFMINITYPEFLEXIBLEJOINTOFGYROSCOPETHETRADITIONALMEASUREMENTMETHODCAN’TMEETTHEMEASUREREQUIREMENTFORTHEBENDINGRIGIDITYMEASUREMENTTRAITOFMINITYPEFLEXIBLEJOINTOFGYROSCOPEINTHISPAPERONENEWMEANSISRAISEDWITHFEASIBILITYDEMONSTRATIONANDEMULATIONALANALYSESBYEMULATIONALSOFTWARE，MSC／PATRANANDMSC／NASTRAN，WHICHLEADTOSATISFYINGRESULTANDMAKETHEBASEFORNEXTCHAPTERSONTHELATERCHAPTERS，DISCUSSIONABOUTTHEDEVELOPMENTPROCESSOFTHENEWINSTRUMENTFORTHEBENDINGRIGIDITYMEASUREMENTOFMINITYPEFLEXIBLEJOINTOFGYROSCOPEANDANALYSESONTHEELTORCAUSEDBYTHEFIXINGMETHODONTHEMEASUREPROCESSAREDEPLOYEDTHISERRORISNOTACCEPTABLEFORTHEBENDINGRIGIDITY

簡介：中圖分類號O313V4482論文編號102870115S087學(xué)科分類號080102碩士學(xué)位論文基于超二次曲面的柔性航天器避障機(jī)動研究研究生姓名吳小健學(xué)科、專業(yè)工程力學(xué)研究方向非線性動力學(xué)與控制指導(dǎo)教師文浩副教授南京航空航天大學(xué)研究生院航空宇航學(xué)院二О一五年三月NANJINGUNIVERSITYOFAERONAUTICSANDASTRONAUTICSTHEGRADUATESCHOOLCOLLEGEOFAEROSPACEENGINEERINGMANEUVERSOFFLEXIBLESPACECRAFTINOBSTACLEENVIRONMENTBASEDONSUPERQUADRICSATHESISINENGINEERINGMECHANICSBYWUXIAOJIANADVISEDBYASSOCIATEPROFWENHAOSUBMITTEDINPARTIALFULFILLMENTOFTHEREQUIREMENTSFORTHEDEGREEOFMASTEROFENGINEERINGMARCH,2015

簡介：點(diǎn)擊查看更多航天器微流星體環(huán)境風(fēng)險(xiǎn)評估技術(shù)研究.pdf精彩內(nèi)容。

簡介：工學(xué)博士學(xué)位論文工學(xué)博士學(xué)位論文航天器編隊(duì)姿態(tài)協(xié)同控制方法研究航天器編隊(duì)姿態(tài)協(xié)同控制方法研究STUDYONATTITUDECOORDINATIONCONTROLOFSPACECRAFTFORMATION靳爾東靳爾東2009年10月CLASSIFIEDINDEXV4482UDC62978DISSERTATIONFORTHEDOCTORALDEGREEINENGINEERINGSTUDYONATTITUDECOORDINATIONCONTROLOFSPACECRAFTFORMATIONCANDIDATEJINERDONGSUPERVISORPROFSUNZHAOWEIACADEMICDEGREEAPPLIEDFORDOCTOROFENGINEERINGSPECIALITYSPACECRAFTDESIGNAFFILIATIONSCHOOLOFASTRONAUTICSDATEOFDEFENCEOCT,2009DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY

簡介：中國科學(xué)院空間科學(xué)與應(yīng)用研究中心碩士學(xué)位論文航天GPS數(shù)據(jù)采集、處理及地面檢測系統(tǒng)的研究姓名陳澤江申請學(xué)位級別碩士專業(yè)計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師范建軍20050101ABSTRACTTHERESEARCHFORSPACEGPSDATACOLLECTION、PROCESSINGABSTRACTTHISTHESISISBASEDONSPACEGPSDATARECEIVINGANDORBITDETERMINATION，ANDDEVELOPSTHEAUXILIARYGPSDATAPROCESSINGUNITANDCONCERNINGWORK．FIRSTTHETHESISINVESTIGATEDTHEPRELIMINARYKNOWLEDGEABOUTGPS，ANDANALYZEDTHEREQUIREMENTOFTHEAUXILIARYGPSDATAPROCESSINGUNIT，F(xiàn)ROMCHIPSELECTION，HARDWAREDESIGNTOTHEREALIZATIONOFTHESOFTWAREANDACCOMPLISHEDTHEDESIGNOFTHESYSTEM，ANDACHIEVEDTHETRANSPLANTATIONOFTHERTODREALTIMEORBITDETERMINATIONSOFTWARETOTHEOSBASEDONARM，ANDFINALLYDEBUGGEDANDOPTIMIZEDTHEMATHMODELINTHERTODSUCHASEKFEXTENDEDKALMANFILTERWITHTHEREALDATABEFORE．THERTODHASBEENAPPLIEDTOTHEFACTUALWORK．ACCORDINGTOTHEREQUIREMENTOFTHEGPSDATARECEIVINGANDRTOD，THETHESISDESIGNEDTHECONCERNINGSYSTEMTOVALIDATETHEDATA．ITCONSTRUCTEDTHESYSTEM，ANDACHIEVEDTHEREQUIREMENTANALYSIS，DESIGN，CODINGANDDEBUGGING．THESYSTEMCANANALYZETHEORBITDATAFROMRTOD，ANDPROCESSTHERESULT，ETC．THESOFTWAREHASBEENAPPLIEDTOTHEFACTUALWORKANDTESTIFIEDTHECORRECTNESSOFTHESYSTEM．KEYWORDSGPS、ARM、RTOD、EKF、DATAPROCESSING、5

簡介：工學(xué)博士學(xué)位論文分布式微型航天器的時(shí)鐘同步研究CLOCKSYNCHRONIZATIONRESEARCHFDISTRIBUTEDMICROSPACECRAFTSYSTEM龔曉春哈爾濱工業(yè)大學(xué)2007年10月CLASSIFIEDINDEXV4431UDC62138DISSERTATIONFTHEDOCTALDEGREEINENGINEERINGCLOCKSYNCHRONIZATIONRESEARCHFDISTRIBUTEDMICROSPACECRAFTSYSTEMCIDATEGONGXIAOCHUNSUPERVISPROFXUGUODONGACADEMICDEGREEAPPLIEDFDOCTOFENGINEERINGSPECIALTYMICROELECTRONICSSOLIDELECTRONICSAFFILIATIONRESEARCHCENTEROFSATELLITETECHDATEOFDEFENCEOCTOBER2007DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY

簡介：西北工業(yè)大學(xué)碩士學(xué)位論文航天飛行器結(jié)構(gòu)系統(tǒng)在熱力耦合環(huán)境下的健康監(jiān)控技術(shù)研究姓名萬婧申請學(xué)位級別碩士專業(yè)人機(jī)與環(huán)境工程指導(dǎo)教師宋筆鋒20060301摘要HEALTHMONITORINGFORAIRCRAFTSTRUCTURALSYSTEMONTHEHEATFORCECOUPLEDENVIRONMENTABSTRACTINTHISPAPER，TAKINGTHETORSIONRESISTEDBOXOFWINGINANAIRCRAFTASALLEXAMPLE，RESEARCHWORKFOCUSESONTHETECHNOLOGYOFAIRCRAFTSTRUCTURALHEALTHMONITORINGUNDERTHEHEATFORCECOUPLEDENVIRONMENTITINCLUDESFINITEELEMENTANALYSISOFTHEBOXMODEL、DATAPROCESSINGTECHNOLOGYANDEXPERIMENTMAINLYINTHEFIRSTPART，AFTERINTRODUCINGTHEBACKGROUNDOFTASKTHEMECHANICALCHARACTERISTICSOFTHEBOXMODELAREANALYZEDUNDERBOTHORDINARYANDHEATFORCECOUPLEDENVIRONMENTTHERESULTSINDICATETHATTHEMECHANICALCHARACTERISTICSOFTHEBOXMODELCHANGEDINTHELATTERWHICHWILLLEADTOFAULTSEASIERANDTHENTYPICALFAULTPATTERNSOFTHEBOXARESIMULATEDNUMERICALLYTHEBOXMODELCHARACTERISTICSCHANGEDUNDERFAULTSANDNORMALBYCOMPARINGWITHTHENORMALSECONDLYTHEDATAOFTHESEABOVESIMULATIONSAREAYALYZEDANDPROCESSEDWITHTHEHELPOFFOURIERTRANSFORMINORDERTOSTUDYTHEAPPLIANCEOFWAVELETTRANSFORMINTHEFIELDOFAIRCRAFTSTRUCTURALHEALTHMONITORINGTHEWAVELETTRANSFORMCANOVERCOMETHELIMIMTIONOFFOURIETRANSFORMANDHASABETTERTIMEANDFREQUENCYCHARACTERISTICSTHEFAULTDATACANALSOBEDESCRIBEDINBOTHTIMEANDFREQUENCYDOMAINNEXT，BASINGINTRODUCINGTHEWAVELETPACKETANALYSISTHEORYTHE“ENERGYFAULT”METHODISAPPLIEDINAIRCRAFTSTRUCTUREHEALTHMONITORINGANDTHEFAULTSCANBERECOGNIZEDANDDIAGNOSEDBYANALYZINGTHECHANGESOFENERGYINSIGNALSANAIRCRAFTHEALTHMONITORINGEXPERIMENTISINTRODUCEDINTHETHIRDPARTTHEOPTIMIZATIONDESIGNOFSENSORS’LAYOUTINTHEBOXMODELISCONSIDEREDDURINGTHECOURSEOFTHEEXPERIMENTBYANALYZINGANDPROCESSINGTHEEXPERIMENTDATA，THEWAVELETTRANSFORMISPROVEDTOBEFEASIBLECOMPLETELYKEYWORDSAIRCRAFTHEALTHMONITORING，F(xiàn)OURIERTRANSFORM，WAVELETTRANSFORM，WAVELETPAEKETANALYSIS，TIMEANDFREQUENCYDOMAIN，ENERGYFAULTMETHODII

簡介：中國科學(xué)院空間科學(xué)與應(yīng)用研究中心博士后學(xué)位論文航天器自主導(dǎo)航和深空導(dǎo)航中的軌道動力學(xué)研究姓名劉迎春申請學(xué)位級別博士后專業(yè)空間物理學(xué)指導(dǎo)教師林寶軍20040901ABSTRACTTHISTECHNIQUEREPORTISTHESUMMARYOFTHEPOSTDOCTORALWORK，WHICHISFOCUSONORBITDYNAMICSOFSPACECRAFTAUTONOMOUSNAVIGATIONANDDEEPSPACENAVIGATIONSESSIONONEISREPORTONORBITDYNAMICSOFSPACECRAFTAUTONOMOUSNAVIGATIONBASEDONGPSDATACHAPTERONEISABRIEFSURVEYOFSPACECRAFTAUTONOMOUSNAVIGATION，WHICHISMAINLYBASEDONGPSDATACHAPTELTWOINTROUDUCEDSTHEBASICOFTHETIMEREFERENCEANDCOORDINATESFRAMESCHAPTERTHREEISTHEMEASUREMENTMODELANDFORCEMODELOFTHEGPSDATACHAPTERFOURILLUSTRATESSEVERALMETHODSOFTHEORBITPROPAGATIONCHAPTERFIVEISTHEALGORITHMSOFTHEINTERPOLATIONANDTHEINTEGRATIONCHAPTERSIXPRESENTSTHEEQUATIONSOFTHEEXTENDEDKALMANFILTERSESSIONTWOISREPORTONORBITDYNAMICSOFDEEPSPACENAVIGATIONCHAPTERSEVENISANINTRODUCTIONOFTHETRACKINGDATAANDMEASUREMENTMODELFORDEEPSPACESPACECRAFTCHAPTEREIGHTISAPRELIMINARYEVALUATIONOFORBITDETERMINATIONCAPABILITYOFTHETRANS‘LUNARTRAJECTORYCHAPTERNINEGIVESSOMECONCEPTSOFDEEPSPACEAUTONOMOUSNAVIGATIONKEYWORDSORBITDYNAMICS，SPACECRAFT，AUTONOMOUSNAVIGATION，GPS，DEEPSPACE

簡介：西北工業(yè)大學(xué)碩士學(xué)位論文基于特異航天零件的纖維纏繞線型和建模研究姓名嚴(yán)由嶸申請學(xué)位級別碩士專業(yè)機(jī)械電子工程指導(dǎo)教師史耀耀20040301西北T業(yè)大學(xué)碩上論文ABSTRACTABSTRACTFIBERREINFORCEPLASTICFRPISAKINDOFCOMPOSITEMATERIALSWHICHHASHIGHSPECIFICINTENSITY,HIGHSPECIFICRIGIDITY,LOWDENSITYEXCELLENTCORROSIONRESISTANCEFILAMENTWINDINGFWISAKINDOFFRPFORMINGPROCESSFRPISWIDELYUSEDINAERONAUTICS、ASTRONAUTICSANDOTHERFIELDSFORITSMERITSINTHISPAPER,AMATHEMATICMODELISSTRUCTUREDFORASPECIALPART,ANDAFWPATTERNISDESIGNEDBASEDONTHEMODELTHISPATERNISSIMULATEDBYCOMPUTERFIRSTLY,AMATHEMATICMODELISESTABLISHEDBASEDONSTUDIEDTHEFEATUREOFTHISPARTTHISPARTISDIVIDEDINTOSEVERALPARTSAFTERANALYZINGTHEGEOMETRICSHAPEGEODESICFWPATERNHASBEENDESIGNEDFOREACHSUBSECTIONSINCETHEAXISOFTHEPARTISNOTONTHESAMELINE,ITMAYBENECESSARYTOAMENDTHEPARTINORDERTOMAKEITEASETOPRODUCETHEAMENDABLEMETHODMOSTLYISTHEFWPATERNINTHEJUNCTUREOFFASTIGIATEDCOLUMNANDSPHERESECONDLY,UNDERVCLANGUAGE,THEPARTMODELHASBEENSTRUCTUREDCALLFOROPENGLINTHEPROGRAM,THEGEOMETRICPARAMETERHASBEENDEFINEDVARIABLEFORADAPTEDTHEPARTSWHICHHASSAMEGEOMETRICSHARPTHEFWPATTERNHASBEENSIMULATEDINTHECOMPUTERINTHELIGHTOFTHEOUTCOMEOFTHESIMULATING,WESEETHEFWPATTERNACCORDINGWITHTHEMATHEMATICSEQUATIONSOTHESIMULATINGFWPATTERNPLAYSANIMPORTANTROLEINDIRECTINGTHEREALFWTHEANALYZINGOFFWPATTERNANDDEVELOPINGHAVEGREATLYTHEORETICANDPRACTICALVALUEINTHEFWSEARCHFIELDOFTHEPARTSWHICHHASTHESAMEAXTSKEYWORDSCOMPOSITEMATERIAL,FILAMENTWINDING,GEODESIC,NOTSAMEAXESSIMULATION

簡介：中國科學(xué)技術(shù)大學(xué)碩士學(xué)位論文應(yīng)用于航天測控系統(tǒng)的全數(shù)字IF擴(kuò)頻接收機(jī)的碼同步技術(shù)研究姓名趙明申請學(xué)位級別碩士專業(yè)通信與信息系統(tǒng)指導(dǎo)教師戴逸民200261ABSTRACTABSTRACTTHISTHESISINVESTIGATESTHECODESYNCHRONIZATIONINDIGITALIZEDDS／SSIFRECEIVERUSEDINTHEFIELDOFTRACKING，TELEMETERINGANDCOMMANDTTCAMETHODOFCODESYNCHRONIZATIONISPRESENTEDINWHICHIFSIGNALSISSAMPLEDFIRST，THEMODELOFTHERECEIVERISINTRODUCEDANDTHENWEDISCUSSHOWTOSELECTSUITABLEPNCODEONTHESTANDPOINTOFSHORTENINGTHEACQUISITIONTIME，WEANALYZETHEPARTIALCORRELATIONOFGOLDCODEAFTERANALYZEANDCOMPARESEVERALMETHODSOFACQUISITION，WECHOOSESEQUENTIALDETECTIONBASEDONTHESLIDINGCORRELATIONASTHEFUNDAMENTALMODELFORTHECODEACQUISITIONANDTHENANEVENTUALDIGITALIZEDSCHEMEISPRESENTED，INWHICHTHESAMPLESARE1HITDIGITALIZEDANDMULTIPLEACQUISITIONPATHISUSEDWEESPECIALLYANALYZEDTHEPERFORMANCEOFTHECODEACQUISITIONMODELUNDERLAGERFREQUENCYOFFSETANDLOWSNRSECONDLY，WECHOOSETHENONCOHERENTDELAYLOCKLOOPASTHETRACKMODELANDINTRODUCETHEMETHODOFDIGITALIZEDIMPLEMENTATIONOFTHETRACKINGMODELINCLUDINGTHELOOPFILTERANDTHEDDFSWHICHREPLACESTHECONVENTIONALVCOLASTTHESIMULATIONMODELCONSTRUCTEDINSYSTEMVIEWANDTHERESULTSAREPRESENTEDTHESCHEMEISIMPLEMENTEDINFPGASUCCESSFULLYKEYWORDDIRECTSPREADSPECTRUM，IFSAMPLE，SEQUENTIALPROBABILITYRATIOTEST，1BITDIGITALIZED，F(xiàn)REQUENCYOFFSET，LOWPOWERCONSUMPTION，LOWSNR，HIGHACCURACYMEASUREMENT

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