Abstract: TheaimoftheoptimalscheduleforthePeer-to-Peerrefuelingstrategyistofindthebestrendezvoustrajectorieswiththeminimumfuelconsumptionduringthewholemission.Firstly,themathematicmodelforthemissionprogrammingwassetup,whichwassummedupasathree-indexmatchproblem,andtheminimumfuelexpenditurewassettobetheobjective.Secondly,thealgorithmflowfortheproblemwasdesigned,andthecombinationofKuhn-Mundresalgorithmandtheintegergeneticalgorithmwereadopted,theconvergencewasacceleratedandtheglobaloptimizationwasguaranteed.Atlast,twoconstellationsinthenon-coplanarcircularorbitwithasmallintersectionanglewasconsideredasanexample,andtheoptimalschedulingandfuelcostfortwoimpulsemaneuverweregottensuccessfully.Andtheresultshowsthattheproposedmodelandalgorithmareefficient.

Key words: On-orbitrefueling, Tripartitegraph, Integergeneticalgorithm, Missionprogramming, Non-coplanarcircularorbit, Satellite