摘要
随着软件无线电技术的发展,SRAM型FPGA在星载测控设备中应用越来越广泛。而太空辐射环境中存在的高能粒子极易使其产生单粒子翻转效应,导致系统运行异常或功能中断。分析传统SRAM型FPGA抗单粒子翻转策略的局限性,在结合测控任务特点的基础上,提出底层刷新与应用层预判重载的综合解决方案,并给出实现方法和流程图。通过高能离子试验和实际在轨应用验证,在确保一定性能的前提下,卫星自主发现故障并恢复至正常的概率在99%以上,能达到较好的抗单粒子翻转效果。
With the development of software radio technology, SRAM-based FPGAs are widely used in the satellite TY＆C on- board equipment. However, the SRAM-based FPGAs have volatile memory and are susceptible to single-event upset effects, leading to system failure or function suspension. The traditional single-event upset mitigation strategies of SRAM-based FPGAs are firstly analyzed, then based on the research of characteristics of satellite rI＇T＆C task, the frame based scrubbing combined with prejudge- ment and reconfiguration strategy is derived, also the method and flow diagram are given. High-energy ion experiment and on orbit application show that this single-event upset mitigation strategy is easy to implement and the probability of self-recovery can reach 99%, also it performs better.
出处
《遥测遥控》
2015年第1期52-57,共6页
Journal of Telemetry,Tracking and Command
基金
中科院支撑技术项目(615010201)
关键词
星载测控
FPGA
单粒子翻转
刷新
预判重载
Satellite TY＆C
FPGA
Single-Event Upset
Scrubbing
Prejudgement and reconfiguration
