星载SpaceWire路由器的研究与设计

Research and Design of on-Board Dynamic SpaceWire Router

为满足航天器有效载荷间高速数据多路传输的未来发展需求,该文研究提出了基于SpaceWire的星载数据路由的设计方案。在SpaceWire总线标准网络层分析的基础上,结合虫孔路由原理构建路由器内部结构,提出了采用无阻断交差开关的SpaceWire路由器设计方案。在Simulink环境下建立了路由器仿真模型,并通过BWR解决了虫孔路由阻塞机制带来的刹车问题,使路由器的满负荷通信下的平均丢包率减少了70%。

In order to satisfy the requirement of aerocraft’s multi- transmission for further development,this paper leads to a resolution about on-board SpaceWire routing technology.Based on the network level analysis of SpaceWire standard,it built the architecture of router with wormhole routing theory and non-blocking switch mechanism.A simulation model of router had been set to verify the design,and braking-problem from wormhole routing-blocking had been solved with BWR （Buffered Wormhole Routing）,it reduces 70% average packet-losing ratio on full load communication.