摘要
空间目标相对运动是空间机动的基础,所采用的研究方法是开普勒轨道的扩展与改进。将空间目标相对距离用地心角描述,建立小偏心率假设下两目标地心角表示的相对距离一阶近似解析表达式,讨论了近地轨道空间目标相对距离的周期性,相对距离变化曲线可以看作是一个缓慢变化周期曲线上的快速振荡。分析了考虑摄动影响时相对轨道倾角和轨道交点随时间的漂移,并对长期摄动影响作用下轨道交点的运动进行了分析和计算。依据上述分析,对相对运动的非开普勒特性进行了讨论。
The relative motion between space objects is the foundation of space maneuver, and the research method is derived from Kepler theory. Periodic characteristic of the distance between two space objects is analyzed under the assumption of small eccentricity. It is found that the relative distance between two space objects contains three periodic variations： the short and long pe- riodic variation generated by the orbit motion around the earth and a perturbation periodic variation generated by the J2 perturba- tion, which represents as the amplitude periodic variation of the short and long items. This paper deduces equations between point of intersection and initial classical orbital elements considering secular term of classical orbital elements. Non-Kepler characteristics are discussed in the end.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2009年第1期59-66,共8页
Journal of Astronautics
关键词
非开普勒
相对运动
摄动
空间目标
Non-Kepler
Relative motion
Perturbation
Space object
