摘要
针对具有星间链路的导航星座在卫星节点或链路失效情况下的重构优化设计问题,提出了一种基于遗传算法的设计方法。首先,根据导航星座的功能需求与设计约束,建立了星座综合重构优化设计模型。其次,提出了基于遗传算法的综合优化设计方法,并根据问题特性对遗传算法的具体操作进行了修改。最后,应用该方法对Walker 24/3/2构型星座及网状星间网络在节点和链路混合故障模式下的重构进行了优化设计。结果表明,基于该方法重构后的星座与网络拓扑性能能够得到一定程度的改善,证明了方法的可行性。
An approach based on genetic algorithm is proposed to solve the optimal reconfiguration problem of navigation constellation with inter-satellite links when node or link failure has oc- curred. Firstly, a design model is established based on the requirements and constraints of navi- gation constellation. Secondly, the integrated optimization method based on genetic algorithm is developed and the practical operators are modified to adapt to characteristics of the problem. Fi- nally, the approach is applied to the optimal reconfiguration of a mesh-shaped satellite network in the Walker 24/3/2 constellation under a mixed node and link failures. Results have shown that the constellation and topology performance after reconfiguration based on this method can be im- proved, thus the feasibility of the method is proved.
出处
《航天器工程》
2013年第4期7-11,共5页
Spacecraft Engineering
关键词
导航星座
星间网络
重构
优化设计
遗传算法
navigation constellation
satellite network with inter-satellite links
reconfiguration
optimal design
genetic algorithm
