微小卫星三机异构一体化计算机设计

当前微小卫星的星载计算机与运载计算机多分别采用不同结构的计算机系统设计,导致资源浪费和运载计算机的可靠性较弱。文章提出了一种微小卫星一体化计算机的设计,即采用三机异构备份的设计方案。在发射运载阶段,以数字信号处理器（DSP）为核心的运载计算机作为主机,以高性能FPGA为核心的时变计算机作为备机;在在轨运行阶段,以ERC32处理器为核心的卫星平台计算机作为主机,时变计算机经重构后作为备机。此设计不仅提高了运载计算机的可靠性,而且对卫星平台电子系统在能源、热控、遥测遥控、有效载荷、姿态轨道控制等方面的综合管理能力也有全面提升,并且还具有灵活的扩展性和较强的适应性。

Design on Hybrid Tri-redundant Integrated Computer for Micro-satellite

To satisfy different requirements,different computer systems are adopted for on-board computer for launch vehicle and satellite.To overcome the resource waste and low reliability for the design method,a new design method of on-board integrated computer for satellite is presented.A hybrid tri-redundant system is designed.At the launching phase,the computer for launch vehicle based on digital signal processor(DSP) acts as a host processor,while the time-varying computer based on FPGA is used as a spare.The satellite platform computer based on ERC32 acts as a host computer,and the time-varying computer is used as a spare after reconfiguration in orbit.The reliability for the on-board computer for launch vehicle is improved.The comprehensive management for the on-board computer for satellite is advanced.The expansibility and adaptability is increased.