薄膜航天器拦截空间目标的最优轨道设计
Optimal orbit design for intercepting space targets by thin film spacecraft
尹一蓁 1康国华 1武俊峰 1华寅淼 1程勋龙1
作者信息
- 1. 南京航空航天大学 航天学院,南京 211106
- 折叠
摘要
针对薄膜航天器降轨拦截目标时轨道摄动影响精度的问题,提出了一种基于最优攻角与侧滑角的轨道控制优化算法.该算法首先基于薄膜航天器的轨道动力学特性,计算出降轨的可拦截区域,并判断空间目标是否处于该区域内,减小最优轨道的搜索范围;然后借鉴再入航天器控制攻角与侧滑角的策略,在薄膜航天器固定攻角的约束下,以最小脱靶量为目标函数,使用粒子群算法求解出攻角的最优解;最后针对地球非球形摄动,通过添加侧滑角,实现了对拦截轨道法向的微调,从而提高了拦截概率.仿真验证表明:在理想引力场与非球形摄动修正后的引力场中,薄膜航天器均可实现对低轨共面目标的拦截,且具有良好的末端精度.工作可为太空垃圾的清除提供一种新的思路,同时也对发展新型低成本的轨道拦截研究具有一定的参考意义.
Abstract
Aiming at the problem of precision decline caused by orbital perturbations during the descending orbit interception of thin film spacecraft,an orbital control optimization algorithm based on optimal attack and sideslip angles is proposed.Firstly,the algorithm calculates the interceptable region based on the orbital dynamics characteristics of the thin film spacecraft,then determines whether the target is within the region to narrow down the search range for the optimal orbit.Drawing inspiration from the strategy used in reentry spacecraft which controls attack and sideslip angles,the algorithm seeks to minimize the miss distance as the objective function while subject to the constraint of fixed attack angle for thin film spacecraft.The particle swarm algorithm is employed to find the optimal solution for the attack angle.Lastly,to mitigate the effects of non-spherical Earth perturbations,a slight adjustment to the normal direction of interception orbit is achieved by introducing sideslip angles,thus enhancing the interception probability.Simulation demonstrate the thin film spacecraft can intercept the co-planar targets in low earth orbit with good terminal accuracy under both ideal gravitational filed and non-spheriacl perturbation gravitational filed.The work can provide a new idea for the removal and mitigation of space junk,and also has a certain reference significance for the development of new low-cost orbital interception.
关键词
薄膜航天器/降轨拦截/攻角与侧滑角/可拦截区域/脱靶量Key words
thin film spacecraft/descending orbit interception/attack and sideslip angles/interceptable region/miss distance引用本文复制引用
基金项目
国家自然科学基金面上项目(12272168)
江苏省双创人才项目(JSSCBS20210181)
出版年
2024
国家科技期刊平台
NSTL
万方数据