Abstract: The transfer trajectory of libration point mission varies considerably due to the high sensitivity of error sources and perturbation forces. So, the midcourse correction of transfer trajectory must be considered. For the Halo perigee insertion transfer trajectory, the sensitivity to initial launch errors is firstly analyzed in this paper, and two correction schemes of three impulses and four impulses are put forward. And then the influence of the factors such as initial errors, navigation errors, maneuver performance errors, and earth gravitational perturbation, moon gravitational perturbation, and sunlight pressure perturbation on transfer trajectory correction cost and effect is discussed. The relation between correction times and maneuvers and the relation between errors and maneuvers are achieved by numerical simulation. The Monte Carlo simulation results show the feasibility of proposed two schemes.

Key words: Halo orbit, midcourse correction, error source, perturbation factor, Monte Carlo simulation