›› 2014, Vol. 34 ›› Issue (3): 15-22.doi: 10.3780/j.issn.1000-758X.2014.03.003

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SolarRadiationPressureModelingMethodforComplexSpacecraft

HUANGAnyi1,2,ZHANGShaoyu2,LIHengnian1   

  1. (1StateKeyLaboratoryofAstronauticDynamics,Xi′an710043)(2Xi′anSatelliteControlCenter,Xi′an710043)
  • Received:2013-08-30 Revised:2013-10-21 Online:2014-06-25 Published:2014-06-25

Abstract: It′scomparativelydifficulttomodelthesolarradiationpressurewhencalculatingthepreciseorbitofthespacecraft.Especiallywhentheshapeofthespacecraftisinvolute,therewouldbesuperpositionandobscurationbetweendifferentmaterials,sothatthenormalexperimentalmethoddoesn′twork.Basedontheprecise3-DGeometricModel,thesimulativevisionwasusedtogetthesectionshapeofthespacecraftwhichperpendiculartotheSunvector,andthencalculatedtheequivalentSRPareaandthecoefficientwiththeSRPcharacteristicsofthematerial.Toreducetheamountofcalculation,anewmethodwasprovidedusingprior-calculatingandreal-time-interpolation.ConsideringthattheSRPcharacteristicswouldchangeinspace,thecalculationwastransformedintoasemi-empiricalformulasothecoefficientscouldbeestimatedbytheobservationdata.Thesimulationindicatesthattheanalysismethodcaneffectivelyreflecttheobscurationbetweenthepartsofthespacecraft.

Key words: Solarradiationpressureforcemodel, 3-Dgeometricmodel, Shadowinganalysis, Semi-empiricalformula, Spacecraft