地月周期轨道对地月L1与L2附近Halo轨道的可见性分析

Visibility Analysis of the Cislunar Periodic Orbit for the Halo Orbits near the Earth-Moon L1 and L2 Points

随着去往月球航天器的增多,现有的近地空间光学卫星与地基光学望远镜的探测能力已无法满足要求,急需增强地月空间观测能力,通过使用地月周期轨道来填补地月空间观测能力的不足被认为是一种有效手段。针对地月周期轨道的特性,文章基于微分校正原理对三体轨道建模,并完成了算法的设计,提出了地月周期轨道的选择原则,并优选了3条轨道。在地月周期轨道对地月拉格朗日点L1、L2附近Halo轨道的可见性分析中,为方便评估,采用类球体的物体星等评估模型来定义可见性的评估标准;基于卫星工具包提供模型计算中涉及的自然天体、物体和观测卫星三者的时空关系,给出了可见性分析过程及结果,研究表明地月周期轨道对地月拉格朗日点L1、L2附近Halo轨道均有不错的观测效果,其中轨道1对地月周期轨道的可见性综合最高,均大于95%。

With the increasing of spacecrafts going to the moon,the detection capability of the existing near-Earth space optical satellites and ground-based optical telescopes can no longer meet the observation requirements,and it is urgent to enhance the cislunar space observation capability.It is considered as an effective means to make up the deficiency of cislunar space observation capability for observations using the cislunar periodic orbit.According to the characteristics of the cislunar periodic orbit,the orbit is modeled based on the principle of differential correction and the algorithm is designed.An orbit selection principle is proposed and three optimized orbits are given.In the analysis of the visibility of the cislunar periodic orbit to the Halo Orbit near the cislunar Lagrange points L1 and L2,in order to facilitate the evaluation,the spheroid-like object magnitude evaluation model is used to define the evaluation criteria of visibility.Based on the spatiotemporal relationship between natural objects,object and remote sensing satellites involved in the calculation of the model provided by the satellite toolkit,the visibility analysis process and results are presented.The results show that the cislunar periodic orbit has a good observation effect on the Halo Orbit near the cislunar lagrange points L1 and L2,and the visibility of the cislunar periodic orbit with serial number 1 is the highest,which is greater than 95%.