摘要
为了满足小卫星对星载存储器大容量、低成本、高集成度的需求,以目前主流存储芯片为研究对象。从管理方式、读写效率、可移植性等方面进行分析,提出用具备自主管理坏块、错误监测与纠正能力的内嵌式多媒体存储卡来代替目前常用的闪存阵列的方案。针对星载设备的应用模式及空间环境特点,结合内嵌式多媒体存储卡芯片特点及星载存储器使用模式,研究星载存储的容错保护技术。在此基础上给出基于内嵌式多媒体存储卡芯片的星载大容量存储器实现途径,设计结果表明所提方案是一种适用于小卫星星载平台的低成本、可容错保护、高吞吐率的新型存储方案。
A research on the widely used on-board storage is taken on the demand of the mass storage,low cast and highly integrated for small satellite.Study on the difference of the manage way,read/write rate and reusability shows a better way to establish mass storage using eMMC that can self-managements and error rectify to instead the FLASH array.According to the analysis on features of the eMMC and the space radiation environment study on the fault-tolerant reinforcement technology for on-board memory on eMMC was taken.A study on HS400 of eMMC 5.1 the data rate can be 400 MB/s.Based on all that a new mass on-board eMMC array with FPGA controller is designed which are highly integrated and fault-tolerant able for small satellite.
作者
谭维凤
王淦
窦骄
崔耀中
TAN Weifeng;WANG Gan;DOU Jiao;CUI Yaozhong(DFH Satellite Co.,Ltd.,Beijing 100094,China;China Academy of Space Technology(Xi′an),Xi′an 710000,China)
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2020年第S01期107-112,共6页
Journal of Northwestern Polytechnical University
关键词
小卫星
星载存储器
内嵌式多媒体存储卡
容错保护
高吞吐率
small satellite
on-board mass storage
embedded multi media card
fault-tolerent
high throughput rate