Abstract: NowadaysmostadvancedGEOsatellitescollocateelectricthrusterswithhighspecificimpulsetoexecutenorth-southstationkeeping,whichcanefficientlydecreasepropellantconsumption.ForGEOsatellites,electricthrustersusuallycontrolsnothingbutinclination,whilebipropellantthrustercontrolseccentricityandmeanlongitude.AimingatthestationkeepingofGEOsatellitewithelectricthruster,asortofcombinationcontrolmethodofinclinationandeccentricityusingelectricthrusterswasproposed.Theoptimizationmodelforsolvingthecontrolequationswasdeveloped.Twokindsofsimplifiedalgorithmwereinducedbyreducingtheoptimizationmodeldimensionality,whichdeeplydecreasethecomputationalcomplexityandwasconvenientforautonomouscomputationofGEOsatellitestationkeeping.Thismethodcanbeusedtosimulatethecombinedinclinationandeccentricitysimultaneouslyandprecisely,whichleadstothereductionofpropellantconsumptionforstationkeeping.Thesimulationresultsindicatethatthecombinationcontrolmethodhastheadvantagesofhighstationkeepingefficiencyandhighcontrolprecision.

Key words: GEOsatellite, stationkeeping, electricpropulsionsystem, inclinationcontrol, eccentricitycontrol, combinationcontrol