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1、中國(guó)科學(xué)院研究生院博士學(xué)位論文大氣無(wú)線(xiàn)電掩星探測(cè)接收機(jī)研究姓名:王先毅申請(qǐng)學(xué)位級(jí)別:博士專(zhuān)業(yè):地球與空間探測(cè)技術(shù)指導(dǎo)教師:孫越強(qiáng)201206大氣無(wú)線(xiàn)電掩星探測(cè)接收機(jī)研究AbstractGNSSradiooccultationtechnologycanprovidedobalcoverageofEarth’sionosphereandneutralatmosphereprofileswithhi西precisionandhighverti

2、calresolutionsTheoccultationtechnologywillhaveahugepromotiononthenumericalweatherpredictionandclimateresearches,andalsohasagreatpotentialforapplicationsinastronomy,meteorology,spaceanddefensesectorsOneofthecoreissuesofth

3、eGNSSoccultationprojectisthedevelopmentofoccultationreceiverResearchonoccultationreceiveranditsimplementationisimportantforpromotingdomesticoccultationprojectsThisthesisfocusesonthetheoriesandimplementationsofoccultation

4、receiversystemdesign,openlooptracking,signalacquisition,signaltracking,positioningThemainworksandinnovationscanbesummarizedasfollowing:l’)Thefunctionsandperformancerequirementsoftheoccultationreceiverarestudiedandanovera

5、lldesignoftheGNSSradiooccultationreceiverisproposedwhichCanfullymeettheneedsofoccultationreceiver2)Severalcommonlyused(NSSsignalacquisitionmethodsareanalyzedandcomparedOnthisbasis,afastacquisitionmethodiSproposedandimple

6、mentedwhichcancapturesignalsfromrisingoccultationsmorequicklyandincreasestheamountoftheeffectiveoccultationdata3)Theimpactofthehigh—dynamicenvironmentonloworbitsatelliteisanalyzedandafastacquisitionstrategYisproposedandi

7、mplementedGNSSsignalsCanbeacquiedinaveryshorttimeevenunderhigh—dynamicconditions4、)TrackingloopoftheGNSSoccultationreceiveriSstudiedAloopdesignmethodisproposedtomeettherequirementsofthehighdynamicenvironmentSemicodelessc

8、arriertrackingofL2P(Y)isimplementedbyemployingZTrackingtechniqueL1aidedL2trackingmethodhasbeendevelopedtoimproveloopperformance5、)OpenlooptrackingmethodofGNSSoccultationreceiverisstudiedAnimplementationofopenloopmethodis

9、proposedByusingopenloop,theoccultationreceivercailobtainoccultationobservationsoftheloweratmosphere6’)DatafromlaboratoryandmountainbasedoccultationexperimentareanalyzedThefunctionalityandperformanceofthereceiverareverifi

10、edAlotofoccultationdataareobtainedfromthemoutainbasedexperimentandwillbeusedforinversionTheacquisitonandtrackingoftheoccultationreceiverarebetterthanthelaterversionoccultationreceiverLowertropospheredataareobtainedforthe

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