一种低轨通信卫星单天线馈电链路切换方法

An Optimization Method for Single Feeder Antenna Handover in LEO Communication Satellite

提出了一种基于星上路由策略的低轨通信卫星馈电链路切换优化方法,采用单馈电天线设计,在馈电链路切换过程中根据路由算法动态调整业务传输流向。通过星间链路,利用相邻卫星馈电链路实现本星馈电业务传输不中断,有效降低了馈电载荷的质量、功耗及成本,并提高了天线使用率。此优化方法对低轨通信卫星馈电载荷设计、承载网路由协议设计以及星座系统网络设计具有减轻质量、降低成本、简化设计等借鉴作用。

The article proposed an optimization method based on routing strategy for single feeder antenna in Low Earth Orbit(LEO)communication satellite.This method uses a single feeder antenna design,and dynamically adjusts the traffic flow according to the routing algorithm during the feed link handover process.Through the inter-satellite link,the adjacent satellite feeder link is used to realize the uninterrupted transmission of the local satellite feeder service.Compared with dual-feeder antenna relay handover,the method effectively improves utilization rate of feeder antenna.Meanwhile,the weight,power and cost are reduced.This proposed optimization is of great significance to the design of LEO communication satellite feeder link network,the routing protocol design of the bearer network,the design of the feeder load and the LEO communication satellite network.