Abstract: TheresearchonthemidcoursecorrectionofMoonEarthreturntrajectoryisnecessary,asnominalorbitisperturbedbyseveraldisturbancesourcesandboundaryconstraintsiscomplicated.Thesolutionofcharacteristicvelocitywasgotthroughtheexplicit guidancemethodbyusingtheiterationsalgorithmbasedonthedifferencebetweenthetwobody orbitandprecisetrajectory.Asthemidcoursecorrectionstrategywasdividedintomoonsectionandearthsection,theexplicitguidancecorrectionschemesofMoonEarthreturntrajectorybasedonsubsectionlocationpointspredictionwaspresented.Theschemecansatisfythereentrypointparametersconstraintsandcanbeusedwidelyinpractice,asthealgorithmissimplifiedtoovercomedisadvantagesofthedifferentialcorrectionalgorithmwhichrequiresanumericalJacobianmatrix.Finally,theadaptabilityoftheschemewasvalidatedbynumericalsimulationandMonteCarlosimulation.

Key words: Subsectionlocationprediction, Explicitguidance, Midcoursecorrection, Moonearthreturntrajectory, Deepspaceexploration