一种低轨卫星网络的概率风险评估方法研究  

Research on a method of the probabilistic risk assessment of LEO satellite networks

作　　者：张景楠[1,2] 李华旺[1,2] 朱野[2] 姜兴龙[1,2] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050 [2]上海微小卫星工程中心,上海201203

出　　处：《电子设计工程》2014年第14期4-6,共3页Electronic Design Engineering

基　　金：国家863计划(2011AA12A101)

摘　　要：可靠性分析是卫星星座设计过程中不可或缺的一环。针对低轨卫星网络的高可靠性要求,利用概率风险评估的分析方法,结合网络风险及故障树理论,提出了卫星故障树杠铃风险模型。在此模型基础上分析"铱"星系统网络,利用卫星工具箱获取每颗卫星对地覆盖人口数,以此为参数计算得到对网络影响较大的节点和链路,对于今后评估卫星网络风险具有一定的启发意义。Reliability analysis is an indispensable part of satellite constellation design process. According to the high reliability requirement of LEO satellite network, using the analysis method of probabilistic risk assessment, combined with the theory of network risk and fault tree, put forward satellite barbell risk model of fault tree. Based on this model analyze the iridium star system network. Obtain the population which each satellite covers on the earth using the satellite tool kit, and taking it as a parameter calculate to get the nodes and links that have larger influence on network, which has certain enlightening significance for satellite network risk assessment in the future.

关 键 词：概率风险评估 低轨卫星 卫星网络 杠铃模型 

分 类 号：TN915[电子电信—通信与信息系统]