空间信息网络中的星座设计方法研究

[摘要] 提出了一种“骨干网+增强网”的混合星座设计方法，即以GEO卫星节点构成骨干网，以IGSO、HEO、MEO或LEO卫星等其他轨道卫星节点作为增强网，实现全球覆盖。并设计一种了“4GEO+5IGSO”混合星座，对其覆盖性能进行了详细分析。仿真结果表明，所提出的方法采用较少数量的卫星即可满足全球无缝覆盖并可仅依靠中国信关站落地。

[关键词] 空间信息网络；星座设计；混合星座；GEO卫星；IGSO卫星

[Abstract] In this paper, “backbone network + enhanced network” hybrid constellation design approach is proposed. In this approach, backbone network is composed of geostationary orbit (GEO) satellites, while the enhanced network can be composed of inclined geosynchronous satellite orbit (IGSO), highly elliptical orbit (HEO), medium earth orbit (MEO) or low earth orbit (LEO) satellites. The hybrid constellation can cover the earth seamlessly. Then, the hybrid “4GEO+5IGSO” constellation is designed, and the coverage performance of this constellation is analyzed in detail. Simulation results show that the proposed approach can realize global seamless coverage using a small number of satellite nodes, which can only rely on China gateways.

[Keywords] space information network; constellation design; hybrid constellation; GEO satellite; IGSO satellite