同步串行总线在通信卫星转发器中的应用

Application of Synchronous Serial Bus in Communications Satellite Transponder

提出了一种适用于通信卫星转发器分系统测控数据传输的5线制同步串行总线,支持30个终端同时接入,改变了通信卫星平台传统的点对点式的遥测遥控信息传输方式,大大减少了通信舱内电缆数量;并在某通信卫星载荷舱上进行了应用,使卫星载荷舱质量减少几十千克,提升了卫星平台的有效载荷能力。文章设计的串行总线提供标准的接口电路,有利于有效载荷设备的扩容,可以推广至更多的有效载荷设备,构成其之间的测控信息网络。

This paper introduces a synchronous serial bus used for transponder subsystem data transmission in a communications satellite.The bus includes five signals to support 30 terminals access at one time.Data transmission （point-to-point TM/TC mode） in traditional communications satellite platform is changed by this kind of serial bus.The scale of satellite platform cables is optimized by using the serial bus.At the same time,synchronous serial bus has already been implemented in certain communications satellite,so that the platform ability is enhanced effectively and the platform mass is reduced by dozens of kilogram.The standard circuit interface supplied by the serial bus in this design,is advantageous to access more payload devices to the bus.The bus standard interface could also be used in other payload devices to build up TM/TC network among other payload devices.