星載軌道預報算法和軌道機動仿真研究.pdf

1、中國科學院空間科學與應用研究中心碩士學位論文星載軌道預報算法和軌道機動仿真研究姓名：張曉坤申請學位級別：碩士專業(yè)：計算機應用技術(shù)指導教師：楊新劉迎春20050601星載軌遵預報算法和軌道機動仿真研究ABSTRACTStudyonSateIIiteon—boardOrbitPredictionAIgorithmandOrbitalManeuverSimUIatiOnAuthor：ZhangXiaokun(ComputerApplicati

2、onTechnology)Directedby：YangXinandLiuYingchunEnhancingonboardnavigationabilityalleviatinggroundsystem’Sburdenandcuttingdownthecostofspacemission，spacecraftautonomousnavigationsystemissignificantlyimportantAutonomousnavig

3、ationwillsimplifygroundsystemonspacecrafttrackingandroutineorbitdeterminationThedevelopmentofon—boardcomputerandtheincreasingrequirementfororbitpredictionprecision，promotetheupdateofonboardorbitpredictionalgorithmInaddit

4、ion，extensiveattentionhasbeenalreadypaidtodevelopingthestableorbitalcontrolsystembythedomesticandforeignresearchers，whichisakeytechnologyofhighprecisesmallsatelliteInthisthesis，spacecraftonboardorbitpredictionalgorithman

5、dorbitalmaneuversimulationarediscussedrespectivelyThemainworkisfollowed：EstablishingtheforcemodelsforLEO(LowEarthOrbit)spacecraft，consideringthevariousperturbationsincludingtheEarthgravitythelunisolarforces，solarradiatio

6、nandatmosphericdrag≯Workingonthespacecraftsimulationsystemanditsuserinterface，mainlyonorbitdynamicsmodelanditsimplementationGivinganewsatelliteephemeriscomputationmethod，Itisdifficultforthetraditionalmethodstosatisfythei

7、ncreasingpreciserequirementinfutureWiththegreatimprovementofonboardsystemcapability，itisfeasibletopredictmoreprecisesatelliteorbiton—boardAnumericalalgorithmforonboardorbitpredictionispresentedfortheLEOspacecraft，byapply

8、ingthesimplifieddynamicsmethodandRK4integratorembeddedwiththeinterpolationmethodEarthobservationsatellitesmostlyoperateonnearlycircularsunsynchronizationorbitsTheirorbitalmaneuversareusuallyaccomplishedamongcirculardiffe