基于改进AODV协议的胞元航天器在轨自组网策略研究  

Research on in-orbit self-organizing network strategy for cellularized spacecraft based on improved AODV protocol

作　　者：季庆丰 郭崇滨 陈超[1,3] JI Qingfeng;GUO Chongbin;CHEN Chao(Innovation Academy for Microsatellites of CAS,Shanghai 201203,China;University of Chinese Academy of Sciences,Beijing 100049,China;Shanghai Engineering Center for Microsatellites,Shanghai 201203,China)

机构地区：[1]中国科学院微小卫星创新研究院,上海201203 [2]中国科学院大学,北京100049 [3]上海微小卫星工程中心,上海201203

出　　处：《西北工业大学学报》2025年第1期99-108,共10页Journal of Northwestern Polytechnical University

基　　金：上海市“科技创新行动计划”港澳台科技合作项目(23510760200);上海市东方英才计划青年项目(Y3DFRCZL01);中国科学院青年创新促进会优秀项目(Y2023080);中国科学院A类战略性先导科技专项(XDA0360404)资助。

摘　　要：胞元航天器由胞元单体构成,能够在轨组装、重构与维护,是未来大尺度航天器发展的重要方向之一。胞元单体间的通信自组网是在轨构建顺利进行的保障,但目前对此研究尚有不足。结合系统特征,将胞元单体按照功能特性划分为主脑胞元、功能胞元、载荷承载胞元3个级别,描述在轨构建过程,定义胞元航天器自组网的完整性,并在传统AODV路由协议基础上,定义并综合考虑路由路径中节点的连接性能、路径距离、路径能量和拥堵状况,设计自组网策略,优先选择包含高能量功能胞元的路由路径,并于路径信息返回时由中间胞元进行更新。仿真实验表明,文中策略能有效降低胞元航天器在轨构建场景下自组网的系统功耗与平均时延、提高网络生存时间、增大吞吐量、降低丢包率并优化网络拓扑;地面胞元航天器样机缩比实验则表明该策略在同类场景不同情况下具有良好的适用性。The cellularized spacecraft is composed of cellularized monomers,capable of in-orbit assemble,reconstructed and maintenance,and is one of the important direction for developing the large-scale spacecrafts in the future.The communication network self-organization between cellularized monomers is the guarantee for the smooth construction of the system in orbit,but there is still a lack of research on this.Based on system characteristics,the cellularized monomers of the cellularized spacecraft are divided into three levels:main brain cell,functional cell,and payload bearing cell,according to their functional characteristics.The in orbit construction process is described,and the integrity of the cellularized spacecraft self-organization network is defined.A self-organization network strategy based on the traditional AODV routing protocol is also designed,which considers the connectivity performance of nodes in the routing path,path distance,path energy,and congestion status.This strategy selects the optimal path,and prioritizes routes that contain high-energy functional cells for cellularized spacecraft,and the path information is updated by the intermediate cells when returned.Simulation experiments show that this strategy can effectively reduce the system power consumption and average delay of cellularized spacecraft in the orbit construction scenario,improve the network survival time,increase throughput,reduce packet loss rate and optimize the network topology.The scaled experiments of the ground cellularized spacecraft prototype show that the present strategy has good applicability in similar scenarios and different situations.

关 键 词：胞元航天器 自组网 AODV协议 路由路径 

分 类 号：V476.9[航空宇航科学与技术—飞行器设计]