摘要
为提高小卫星的数据处理能力,研究了具有双机容错结构的新型星载计算机系统,其数据处理模块的核心采用具有32位的RISCARM处理器.应用容错技术实现了基于COTS器件的星载计算机硬件组成和结构,并分析了双机容错的故障处理机制和星载计算机软件组成结构.给出的性能指标表明,在质量、体积、功耗和空间环境的约束条件下,星载计算机数据处理能力可满足小卫星飞行任务的需求.
The new fault-tolerant onboard computer（OBC） with dual processing modules is presented to improve the micro-satellite data handling. Each processing module is composed of 32-bit ARM processor. Using the fault tolerance method, The OBC＇s hardware structure is implemented based on commercial-off-the-shelf （COTS） devices. As well as, a detail analysis of the fault handling mechanism and the software architecture is given. Considering the demanding of the extremely tight constraints on mass, volume, power consumption and space environmental conditions, the new fault tolerant onboard computer＇s data handling is enough to meet the micro-satellite missions.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2005年第4期23-26,共4页
Journal of Beijing University of Posts and Telecommunications
基金
国家"863计划"项目(2002AA742010)
关键词
小卫星
星载计算机
计算机容错
micro-satellite
on-board computer
fault tolerance
