摘要
对卫星扩频应答机抗单粒子效应的方法进行分析,设计了采用反熔断丝工艺的FPGA(A54SX32),通过回读比对功能对FPGA进行监控和处理。此方法大大降低了单粒子效应造成卫星扩频应答机发生功能性故障的可能性,并在系统中通过内部高可靠单机对易发生单粒子效应的扩频应答机进行监控,诊断出故障后进行修复,同时设计定时复位对应答机进行复位、开机操作,确保卫星在轨扩频应答机的正常稳定工作。
The satellite-borne spread spectrum transponder against SEU effect is analyzed, and a method which uses FPGA under an anti-fuse technique is designed, namely A54SX32, with a function of read back and realignment to monitor and handle FPGA. By means of that, the probability of functional faults caused by SEU effect on the satellite-borne spread-spectrum transponder will be considerably reduced. The spread spectrum transponder, which is prone to SEU effect, will be monitored by highly reliable standalone unit in the system, and the fault will be diagnosed and fixed. In addition, a watchdog timer is designed to reset and start up the transponder, so as to ensure a smooth operation of the on-orbit satellite-borne spread-spectrum transponder.
出处
《航天电子对抗》
2016年第4期52-55,共4页
Aerospace Electronic Warfare
