摘要
WSO/UV(世界空间紫外天文台)以及监测太阳活动的特殊探测器(Solar Sentinel)都需要在日-地(月)系的平动点附近运行,且相对日-地(月)系要求其几何位置几乎保持不变,因此有必要阐明平动点的动力学特征及其附近的运动状况。基于这一点,对限制性三体模型下,日-地(月)系中平动点附近扰动运动的稳定性作了详尽的分析,尤其讨论了共线平动点具有不稳定动力学特征时,如何使WSO/UV这类空间探测器保持在其附近的情况;同时阐明了轨道保持不变的条件和相应的轨控措施。
WSO/UV (World Space Observatory of UltraViolet) and other special detectors (Solar Sentinel) observing the Sun should all be ejected to the vicinity of Lagrangian Equilibrium Points of the Sun-Earth (Moon) system, keeping its configuration with the Sun and the Earth (Moon). Therefore it is necessary to expound the dynamic characteristics of Lagrangian Equilibrium Points and the stability of the motion in the vicinity of these points. Based on this concern, we make detailed analysis on the motion of small deviation from the Lagrangian Equilibrium Points of the Sun-Earth (Moon) restricted 3-body problem in this paper, especially on the collinear points with instability, and discuss the problem how to keep these detectors near these equilibrium points. We give out the conditions of the keeping and adjustment of the orbit of the space detectors in this paper.
出处
《天文学进展》
CSCD
北大核心
2005年第2期180-189,共10页
Progress In Astronomy
基金
国家自然科学基金重大国际合作资助项目(10073009)
关键词
天体力学
航天器轨道力学
空间探测器
共线平动点
轨道控制
celestial mechanics
spacecraft orbital dynamics
space probe
collinear libration points
orbit control
