北斗三号卫星综合电子系统设计

Design of Beidou-3 Satellite Avionics System

作为在轨网络化与智能化信息处理的中心,北斗三号卫星综合电子系统采用分级分布式网络体系结构,以网络化、扩展性、高可靠为原则,实现星座复杂业务信息统一处理和共享。基于标准空间链路协议、空间子网与星内子网分级网络拓扑实现通信网络化,基于接口标准化实现软硬件模块灵活扩展,基于分级故障检测与处置、功能与信道容错、可靠重构与维护及自主健康与任务管理技术保证卫星服务连续性。工程实践表明,北斗三号卫星综合电子系统有力支持分组分批研制及长期可靠智能自主运行,为未来大型复杂航天器电子信息系统的设计提供参考。

As the center of networking and intelligent information processing in orbit,based on the principles of networking,extensibility,and high reliability,the Beidou-3 satellite avionics system adopts the hierarchical distributed network architecture,realizes the unification and sharing of complex information within the constellation.By developing standard link protocols based on CCSDS,and building the hierarchical network topology of space subnet and the subnet in the satellite,communications networking is implemented;based on interface standardization,flexible extension of software and hardware modules is implemented;based on hierarchical fault diagnosis and recovery,fault tolerance of function and channel,reliable reconstruction and maintenance,and autonomous health and task management technology,service continuity is guaranteed.Practice shows that avionics system of Beidou satellite strongly supports the batched development,and the long-term and reliable intelligent autonomous operation.It provides reference for the design of electronic information system for large and complex spacecraft constellation in the future.