机载雷达系统多层划分容错机制的研究  

Multilayer fault-tolerance mechanism for airborne radar system

作　　者：李洪亮[1] 朱占宇[1] 

机构地区：[1]中航工业雷达与电子设备研究院,江苏无锡214062

出　　处：《现代电子技术》2013年第17期15-19,共5页Modern Electronics Technique

摘　　要：针对机载雷达系统的高可靠性要求,提出了一种多层划分的容错体系结构。采用自底向上分层的方式构建容错系统并试图在每一层尽可能的处理相应级别的错误,避免由微小错误导致高代价故障处理方式的介入。在此基础上设计分布式冗余管理协议实现节点的错误诊断、错误隔离以及重新配置,并采用一种基于悲观消息日志的异步检查点回卷恢复策略用于程序状态的复位或恢复。最后通过系统仿真故障注入的方式验证采用多层划分容错机制设计的系统具有更高的容错效率。Aiming at the requirement of high reliability in airborne radar system, a multi-layer fault tolerant architecture is presented. The bottom-up hierarchical method is used to build fault tolerant system, try to handle all the corresponding faults in each level, and avoid costly exception handles caused by micro fault to intervene. Subsequently, a distributed redundancy management protocol is designed to support the diagnosis, isolation and reconfiguration of fault nodes, and an asynchronous checkpoint rollback recovery strategy based on pessimistic log is adopted for the recovery and restoration of program status. Finally the high fault tolerance efficiency of the system designed by multi-layer fault tolerant mechanism was verified through fault injection.

关 键 词：机载雷达系统 容错体系 多层划分 检查点回卷恢复 

分 类 号：TN953-34[电子电信—信号与信息处理]