摘要
针对卫星编队整体机动的难点,充分考虑编队的"群"运动特性,按照先规划参考卫星轨迹,后规划伴随卫星轨迹的思路,提出一种整体机动的分步规划策略。采用Gauss伪谱法优化参考卫星的轨迹,并检验优化结果的最优性;根据整体机动过程中的路径约束,以参考卫星的轨迹为参考,规划伴随卫星的可行飞行区域;根据终端约束条件,在可行区域规划伴随卫星的飞行轨迹;引入动态逆的思想,根据伴随卫星飞行轨迹反推相应的控制量;最后,分析了伴随卫星轨迹在控制上的可行性,并分析了整体机动轨迹最优性性能。仿真分析表明,该方法计算量小,能满足整体机动的任务要求。
Taking the advantage of the ＇ cluster＇ character of the motion, a two-stage plan strategy for satellite formation maneuvering is presented. The first stage is to plan the maneuvering trajectory of the reference satellite, the secondly stage is to plan the trajectories of the concomitant satellites. The trajectory of the reference satellite is optimized and validated by Gauss Pseudospectral Method （GPM）. Based on the reference trajectory, the feasible flying area of the concomitant satellites are determined according to the path constraints . The trajectories of the concomitant satellites are in the feasible flying area, connecting the initial states and the final states of the formation. And the control variables are deduced from the trajectories based on the dynamic inversion method. Lastly, the feasibly of the trajectories of the concomitant satellites is analyzed. And the optimal condition of the results is validates. Simulation results show the approach can reduce the computing amount, and can satisfy all the requirements of the satellite formation maneuvering mission.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2009年第5期1848-1853,1860,共7页
Journal of Astronautics
关键词
整体机动
规划策略
GAUSS伪谱法
可行飞行区域
伴随卫星轨迹
动态逆方法
Formation maneuvering
Planning strategy
Gauss pseudospectral method
Feasible flying area
Trajectories of concomitant satellites
Dynamic inversion method
