智能空间概念及其技术体系的发展，拓展了人们对物理时空的传统认知；时空本质一体连续并与信息空间相互映射交叠，二者的有机融合可进一步提升信息技术管控物理空间对象的能力。本文针对当前空中交通管理发展趋势下空域管理面临的问题与需求，提出了数字化空域系统概念，在物理信息融合空间构建空中交通四维时空框架，实现了空域管理的数字化重构；发展了一套数字化空域管理控制理论方法，利用大规模计算技术对其运行结构与控制模式进行研究分析、计算决策、使用配置，为在空中交通管理中实现空域与空中交通流量、交通管制自适应协同建立了理论基础。此外，研究提出了我国数字化空域系统发展建议：制定国家空域系统发展战略规划，统筹实施“军民航”空管基础设施建设；完善科技创新机制，建设国家空域系统科技创新平台；加强空管科技创新工作的统筹协调和资源整合，完善科研创新发展规划。

The development of smart space and its technical system has expanded the traditional cognition of physical space-time domain. Time and space are essentially integrated and continuous, and they overlap with the information space. The organic integration of the space-time domain with the information space can enable information technology to further its control over the physical space. To address the problems of and needs for airspace management, we propose a digital airspace system and construct a four-dimensional air traffic space-time framework in a physical–information fusion space, realizing the digital reconstruction of airspace management. Furthermore, a set of control theories and methods for digital airspace management is developed. Large-scale computing technology is utilized for analyzing the operating structure and control mode of the digital airspace system, also for decision making and use configuration, thereby laying a theoretical foundation for the coordination of airspace, air traffic flow, and air traffic control. Moreover, we propose suggestions for the development of the digital airspace system in China. A national plan for airspace system development should be formulated to coordinate the civil and military air traffic infrastructure construction. The scientific and technological innovation mechanism should be improved to build an innovation platform for the national airspace system. The overall coordination and resource integration of air traffic control innovation should be strengthened to improve the research and innovation plan for airspace management.