深空多普勒信號采集系統(tǒng)用戶控制軟件的設(shè)計與實現(xiàn)

1、東南大學(xué)碩士學(xué)位論文深空多普勒信號采集系統(tǒng)用戶控制軟件的設(shè)計與實現(xiàn)姓名：由忠友申請學(xué)位級別：碩士專業(yè)：檢測技術(shù)及自動化裝置指導(dǎo)教師：陳從顏20090501AbstractHumanspaceflightactivities伽bedividedintothreeparts：thegeneralapplicationofEarthsatellites，manmadespacecraftanddeepspaceexplorationDeeps

2、paceexplorationmissionisdifferentfromthatofnearearthorbitspacecraftIntheminionofdeepspaceexporafionthenormaloperationofcommunicationsystemsisoneoftheimportantguaranteeforthedeepspaceexplorationmissionSUgX沱S8DigitalDopple

3、rtechnologyforDeepspaceradiosignalbecauseofitsflexibilityandgreatfeaturessuchasdataretentiondeal，playsacrucialroleOntheimplementationofthefeedbacksignalsandthereceptionofsatelliteinformationtothegroundThereforeinrecentye

4、ars，digitalDopplerOrbitDeterminationiswidelyusedataircraftorbitmeasurementandoccultationinvasionHowtodesignadopplersystemwithhighstabilitylowfailureratetomeettherequirementofdeepspaceexplorationhasbecomeoneoftheissuesnee

5、dedtoberesolvedFirstlythisthesisintroducesthemainprincipleandstructureofdigitalDopplersignalacquisitionsystemSecondlythesoftwareprogramofDataAcquisitionsystem(DAQ)andusercontrolsystemisdesignedaccordingtoexistinghardware

6、conditionsandpracticaleventacquisitionrequestsofclient11鴆softwareisbasedonObjectOrientedprogramminginLinux，integrated誦thtwokits：QtandPlplotThesoftwareconsistsofthreeparts：HardwareInterfaceKernelInterfaceandUs盯InterfaceHa

7、rdwareInterfacepackshardwareinformation，KernelInterfacecontrolstheprocessofdataacquisition，andUserInterfaceprovidesGUIforuserscorrespondinglySomeprocessesandanalysisoftherawdataacquiredhavebeendiscussedincludingmathemati

8、calstatistics，spcctrunlanalysis，filtering，NCO，zerocrossingpointcountanddopplerfrequencycalculationInviewofthecomplexityoffilterdesignandthespecificityofthedataIlcodcdtobeprocessedthepaperdoesamoredetaileddescriptionofthe

9、designofthefilteranddigitaldownconverterandoontraste8differentpointsoftheFFTInthefrequencyanalysisofZerocrossingpointbyimprovingtheorderofinterpolation，theaccuraoyoftheDopplerfrequencycalculationhasbeenimprovedAtthegamet

10、ime，twodifferentDopplerfrequencyestimationmethods，thezerocrossingcountingalgorithmandIUfealgorithmagediscussedTheresultsshowthatthezerocrossingcountingalgorithmisalittlebettertllallRifealgorithm，andthezerocrossingcountin