皮卫星星载计算机存储模块的容错结构设计

空间单粒子翻转现象对航天飞行器中电子设备特别是静态存储器的可靠性具有重大影响,而星载计算机的可靠运行在很大程度上依赖于系统中存储模块的可靠设计。就皮卫星星载计算机存储模块的可靠性及提高其可靠性应采取的技术进行了论述,提出了使用汉明纠错码作为星载计算机存储模块的容错控制策略,并简要描述了存储模块的硬件结构。该设计具有可靠性高、兼容性强等特点,使皮卫星满足体积小、重量轻、功耗低等工程应用要求。

Fault-Tolerant Design of Memory Module for Pica-satellite On-Board Computer

Single event upset(SEU) induced by cosmic ray seriously imperils the reliability of spacecraft's electronic devices,especially the static random-access memory(SRAM),and then influence the reliable operation of on-board computer.The paper discusses the reliability of On-Board Computer(OBC) memory module,describes the method of improving its reliability based on fault-tolerant strategy of Hamming code and presents a brief hardware structure of OBC memory module.The design has the advantages of high reliability and compatibility for the purpose of satisfying the engineering environment of Pico-satellite application such as small volume,light weight and low power.