【作者】 左祥慧； 李建清； 宋爱国；

【Author】 ZUO Xiang-hui LI Jian-qing SONGAi-guo AMS Research Centre of Southeast University

【机构】 东南大学AMS研究中心；

【摘要】 国际空间站上 AMS 存储系统受到高能粒子的轰击,可能对随机存储器(RAM)电路产生影响,改变半导体记忆器件的逻辑状态,导致存储单元在逻辑‘0’与‘1’之间发生翻转,产生一些关键存储数据出错和控制程序跑飞等问题。本文提出了基于纠错编码基本原理的 BCH(31,16)算法,该算法能够有效解决三位随机错误的纠正问题,其译码算法采用错误图样查找法。利用 Verilog DHL 编程语言来设计 BCH(31,16)码的编码与解码,并下载到 FPGA 开发板上进行电路验证。更多还原

【Abstract】 The influence of Hign_energy particles on random RAM circuits in AMS storage system of international space station can be serious.They can impact the logic states of some semiconductor memory apparatus,produce the phenomena that storage units turns between o and 1,and make some mistakes in the key memory data and bring on the distorsion of the controlling programs finally.The algorithm of BCH(31,16)based on the principle of error correcting codec can solve the problems of three random errors effectively and the error searching method is used for decoding.This paper make use of VerilogDHL language to design the algorithm of BCH(31,16)which is also downloaded to the develop kit,and the circuit verification is done.更多还原