A decoupled Method for Lidar-based Close-range Relative Navigation of Tumbling Non-cooperative Target

Close-range relative navigation for non-cooperative spacecraft is the critical technique for the on-orbit servicing mission, the research on which has theoretical value and engineering significance. Based on the requirement for the autonomous relative navigation, a decoupled method of lidar-based close-range relative navigation scheme for tumbling non-cooperative target is proposed in this paper to initially estimate the position, velocity, attitude and angular velocity of the target. First, the attitude and orbit motions of target as well as the measurement from the lidar are modeled. Then, two navigation filters for rotational and translational motion of target respectively are proposed, the structure and initialization method of which are designed. The validity of the proposed relative navigation method is proved by the numerical simulation results.