摘要
对星载扩频应答机抗单粒子翻转(SEU)的方法进行了研究,从单机层面提出了扩频应答机基带现场可编程门阵列(FPGA)和数字信号处理(DSP)抗SEU的方法,包括配置存储区回读校验、"看门狗"、三模冗余、动态刷新和程序区巡检等设计方法;从系统层面提出了由星上特定设备根据规定的原则对扩频应答机进行关机和开机操作的有效解除单粒子故障的方法。根据我国S频段非相干扩频应答机在轨飞行试验结果,单机发生SEU后自主恢复的概率超过99%,其余1%采用系统级的方法进行了恢复,验证了文章所述方法的有效性和正确性。
The article researches on the methods of resisting SEU （Single Event Upset） for onboard spread-spectrum transponder. At first, from single equipment level, this article puts for- ward the method of FPGA （Field Programmable Gate Array）and DSP （Digital Signal Processor） in transponder＇s basement resisting SEU, including reading and checking of configure memory, watching dog, triple module redundancy, dynamic renovation, and program block, and then, from system level, puts forward the method of solving SEU fault by switching on-off the tran- sponder by special equipments in prescriptive rules. The result of China＇s non-correlated tran- sponder flight experimentation indicates that the probability of transponders independent rene- wing after occurring SEU exceeds 99% with the rest SEU renew by using, system method,which validates the validity of these methods.
出处
《航天器工程》
2014年第1期91-95,共5页
Spacecraft Engineering
基金
国家重大航天工程
