The tracking, telemetry and command (TT&C) mission is extremely reliable for its characters of small time horizon and high redundancy. The combined forcing and failure biasing (CFFB) method that is usually used f...The tracking, telemetry and command (TT&C) mission is extremely reliable for its characters of small time horizon and high redundancy. The combined forcing and failure biasing (CFFB) method that is usually used for simulating the unreliability of the highly dependable mission system seems not so efficient for the TT&C mission. The concept about the importance of failure transition is proposed based on the logical relationship between TT&C mission and its involved resources. Then, the importance is used for readjusting the transition rate of the failure transition when using the forcing and failure biasing during the simulation. Examples show that the improved CFFB method can evidently increase the occurrence of the TT&C mission failure event and decrease the sample variance. More redundancy of the TT&C mission leads to the improved CFFB method more efficient.展开更多
基金supported by the National Natural Science Foundation of China (71071159)
文摘The tracking, telemetry and command (TT&C) mission is extremely reliable for its characters of small time horizon and high redundancy. The combined forcing and failure biasing (CFFB) method that is usually used for simulating the unreliability of the highly dependable mission system seems not so efficient for the TT&C mission. The concept about the importance of failure transition is proposed based on the logical relationship between TT&C mission and its involved resources. Then, the importance is used for readjusting the transition rate of the failure transition when using the forcing and failure biasing during the simulation. Examples show that the improved CFFB method can evidently increase the occurrence of the TT&C mission failure event and decrease the sample variance. More redundancy of the TT&C mission leads to the improved CFFB method more efficient.
文摘“任务伙伴环境”(mission partner environment,MPE)是美国防部与任务伙伴共同开展军事任务指挥控制与信息共享的作战框架。研究了美军MPE概念内涵、发展背景,梳理了MPE的类型与支持的行动级别,全面分析了MPE组成架构;重点研究了MPE的核心——多国信息共享(multinational information sharing,MNIS)体系,分析了MNIS的主要组成部分——虚拟数据中心、联合企业区域信息交换系统、联军联邦作战实验室网络、共用任务网络传输系统、“飞马”系统和所有伙伴接入网的功能与发展现状;介绍了MPE的最新发展并分析了MPE从以网络为中心向以数据为中心发展的主要趋势。