天琴计划轨道构型长期漂移特性分析  

Analysis of long-period drift characteristics for orbit configuration of the Tianqin Mission

作　　者：万小波[1] 张晓敏[1] 黎明[1] 

机构地区：[1]航天东方红卫星有限公司,北京100094

出　　处：《中国空间科学技术》2017年第3期110-116,共7页Chinese Space Science and Technology

摘　　要：为了实现天琴计划航天器轨道构型的长期稳定漂移并满足轨道构型的稳定性指标,文章应用优化算法搜索航天器初始最优瞬时轨道要素。建立考虑摄动情况下航天器轨道动力学模型,对导致等边三角形轨道构型发生长周期漂移的轨道要素进行了分析,并且将这些要素作为轨道设计的待优化参量,应用粒子群(Particle Swarm Optimization,PSO)智能寻优算法进行优化,应用最终优化得到的轨道要素进行轨道构型仿真。仿真结果表明,在不进行轨道控制的情况下,4年内轨道构型呼吸角变化小于1.5°,臂长变化小于1 500km,臂长变化速率小于10km/s,初步满足轨道构型的稳定性指标。In order to realize the long-term steady drift of Tianqin Mission＇ s orbitalconfiguration and meet stability index, initial optimum instantaneous orbital elements were searched by the optimization algorithm. Firstly, orbital dynamics model consideringperturbation was set up. Secondly, the orbital configuration of equilateral triangle drifted for long-period by the orbital elements＇ variety was researched and the orbital elements leadingto the orbital configuration of equilateral triangle drifted in a long-period were made as parameters to be optimized. Particle swarm intelligent optimization algorithm （ PSO） was applied to optimize parameters selected for optimization. Finally, the simulation results showthat the arm length changes less than 1 500 km,the breath angle changes less than 1 5 degrees and the velocity of the arm length variety changes less than 10m/s in natural drifting of four years withoutorbital maneuver. The results meet the initial indicators of the orbital configuration.

关 键 词：天琴计划 轨道构型 长期漂移 稳定性 粒子群优化算法 

分 类 号：V412.4[航空宇航科学与技术—航空宇航推进理论与工程]