地月平动点拟周期轨道设计方法

摘要

地月平动点附近存在的大量拟周期轨道是一类用途广泛的轨道，其设计方法一直是研究的热点。为了克服使用圆形限制性三体模型设计任务轨道时缺乏摄动分析的不足，提出了改进的基于高精度星历模型和多步打靶法的设计方法。具体地，根据地月平动点拟周期轨道在瞬时平动点旋转坐标系中的特征，基于瞬时平动点的运动规律，结合多步打靶法，推导出了三维空间拟周期轨道拼接点的求解方法。仿真分析表明，所提的设计方法可以有效地设计出地月平动点拟周期轨道。%The quasi-periodic orbits about the translunar libration point are extraordinary useful and their desig-ning method is always the focus of research.In order to avoid the limitation that the perturbation analysis is neglected during the orbit design process by using the circular restricted three-body model,an improved designing method that combines high precision ephemeris model with the multiple-shooting method is proposed.Specifically,based on the quasi-periodic orbit’s feature in the instantaneous libration coordinate system and the principle of libration points’mo-tion,with the help of multiple-shooting method,a new designing method for the quasi-periodic orbits is given.Simula-tions indicate that the improved method can design a quasi-periodic orbit effectively.