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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。
Aimed at the problem of reconfiguration of navigation constellation with inter-satellite link in the case of satellite node or link failure, a design method based on genetic algorithm is proposed. First of all, based on the functional requirements and design constraints of navigation constellation, a constellation comprehensive reconstruction optimization design model is established. Secondly, a comprehensive optimization design method based on genetic algorithm is proposed, and the specific operation of genetic algorithm is modified according to the characteristics of the problem. Finally, this method is used to optimize the reconstruction of Walker 24/3/2 configuration constellation and mesh inter-network in the node-link hybrid failure mode. The results show that the proposed constellation and network topology performance can be improved to a certain degree based on this method, and the feasibility of the method is proved.