Abstract: Asthedevelopmentofspacetechnology，thedemandforspacetransportationsystembecomeslargerandmorevarious，on-orbitrefuelinghasbeenanewandindependentdevelopingdirectioninordertoreducethelaunchcosts，mitigatespacedebrisandimprovethepayloadoflaunchvehicle.Thedevelopmentofmethodologieswasfocusedtogenerateoptimaltrajectoriesandschedulesforrefuelingconstellationsofrefuelingspacecraft.Anon-orbitreusablerefuelingpolicyanditsmissionschedulingformultiplespacecraftincircularthroughaspacefuelstationwerepresented.Inordertoestablishtheschedulingmodelfortheon-orbitrefuelingofmultiplecircularspacecraftorbitthroughaspacefuelstation，therelationshipbetweenthevelocitychangeandorbitalelementsfortransferringofservicespacecraftwasfirstlyobtainedbasedontheanalysisoftheproblemoftwoimpulsesorbitalmaneuver.Amulti-objectiveoptimizationmodelformissionschedulingofon-orbitrefuelingformultiplespacecraftincircularorbitswasdevelopedtooptimizeboththesequenceandtimedistributionoftherefuelingmission，andaspecificaldesignalgorithmwasemployedtosearchthesolutionstothemulti-objectiveoptimizationproblem.Toverifytheeffectivenessoftheproposedschedulingalgorithm，acomputersimulationthataimsatschedulingamissionofon-orbitrefuelingfor30spacecraftincircularorbitswasconducted.

Key words: circularspacecraft, on-orbitrefueling, missionscheduling, multi-objectiveprogramming, clusteranalysis, spacefuelstation