| 摘要: |
| 空天地一体化网络凭借立体化覆盖、全球服务的优势，成为未来网络的主要发展方向，但其紧迫的部署需求、复杂的异构架构、动态的拓扑变化给卫星研制与网络运维带来了严峻挑战。针对上述问题，引入数字孪生技术，提出了面向空天地一体化网络的五维数字孪生系统模型，明确了物理实体、虚拟实体、孪生数据、孪生服务及连接关系的核心内涵，进而设计了由实体层、资源层、编排层、应用层构成的四层系统架构，实现异构实体管控、全域资源调度与任务智能编排；同时系统梳理了数字仿真、系统建模、人工智能、大数据四大核心支撑技术的作用机制。研究成果可为空天地一体化网络数字孪生系统的技术研究与工程落地提供参考。 |
| 关键词: 空天地一体化网络 数字孪生 五维模型 系统架构 |
| DOI：10.20079/j.issn.1001-893x.260117001 |
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| 基金项目:中央高校基本科研业务费（3142024003）；北京市科技新星计划（20240484748） |
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| Digital Twin System Architecture for Space-Air-Ground Integrated Network |
| ZHAO Jing,WANG Zhihao,YU Zhigang |
| (1.School of Emergency Technology and Management，University of Emergency Management，Sanhe 065201，China;2.China Academy of Electronics and Information Technology，Beijing 100041，China;3.China Satellite Network Innovation Co.，Ltd.，Beijing 100029，China) |
| Abstract: |
| With the advantages of three-dimensional coverage and global services，the space-air-ground integrated network has become a major development direction of future networks.However，its urgent deployment requirements，complex network architecture and dynamic topology changes pose enormous challenges to satellite development and network construction.To address these issues，digital twin technology is introduced and a five-dimensional digital twin system model tailored for space-air-ground integrated networks is proposed，clarifying the core connotations of physical entities，virtual entities，twin data，twin services，and connection relationships.Furthermore，a four-layer system architecture comprising the entity layer，resource layer，orchestration layer，and application layer is designed to achieve heterogeneous entity management，global resource scheduling，and intelligent task orchestration.Meanwhile，the functional mechanisms of four core enabling technologies，namely digital simulation，system modeling，artificial intelligence，and big data，are systematically elaborated.The research findings can provide theoretical and practical references for the technical research and engineering implementation of digital twin systems for space-air-ground integrated networks. |
| Key words: space-air-ground integrated network digital twin five-dimensional model system architecture |
《电讯技术》编辑部 