以我国空间信息的应用需求为牵引,设计了一种系统管理简单、成本可控的空间光网络系统。该系统利用MEO卫星组成环形骨干光网络,兼顾微波接入功能,实现骨干接入一体化、激光微波混合化的空间信息网络系统,并对系统覆盖能力进行了仿真,同时结合GEO中继系统和LEO卫星系统的特点,提出分步建设思想,最终实现全球信息传输和应用的空间信息网络系统。 Taking the application requirements of China’s space information as the traction, a space optical network system with simple system management and cost control is designed. The system makes use of the MEO satellite to form a ring backbone optical network, which takes into account the microwave access function, realizes the backbone access integration and the laser microwave hybrid spatial information network system, and simulates the system coverage capability. At the same time, with the GEO relay system and LEO satellite system features, put forward the idea of ​​building step by step, the ultimate realization of global information transmission and application of spatial information network system.