基于卫星可靠度和MTTR星座空间备份策略设计  

Design of spatial backup strategy for constellation based on satellite reliability and MTTR

作　　者：项军华[1] 张育林[2] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073 [2]清华大学宇航技术研究中心,北京100084

出　　处：《系统工程与电子技术》2007年第9期1576-1580,共5页Systems Engineering and Electronics

基　　金：国防预先研究项目(413200101)

摘　　要：基于卫星可靠度建立了星座系统可靠度模型,分析了星座构型、卫星的可靠度、备份卫星数目对星座系统可靠度的影响。通过分析备份卫星的可用性、卫星的固有可用度,提出了备份卫星轨道设计约束条件。基于平均修复时间建立了备份卫星重构控制模型,分析了备份卫星数目、备份卫星轨道、平均修复时间对备份卫星重构控制平均特征速度的影响。最后针对卫星星座对系统可靠度和平均修复时间的需求,提出了一套备份卫星子星座构型优化设计方法并给出了设计实例。The constellation reliability model is built up based on the satellite reliability, and the impact on the constellation reliability caused by constellation configuration, satellite reliability and spare satellite number is analyzed. Through analyzing on the availability of spare satellites and the inherent availability of satellites, the design constraints of spare satellite orbit are discussed. Based on the mean time to repair, the reconfiguration control model of spare satellites is presented, and the impact on the average characteristic velocity increment caused by spare satellite number, deployment orbit and mean time to repair is analyzed. Finally based on the demand of constellation reliability and mean time to repair, the design optimization method of the sub-constellation configuration of spare satellites and a design example are presented.

关 键 词：卫星可靠度 平均修复时间 可用性 重构控制 空间备份策略 优化设计 

分 类 号：V412.4[航空宇航科学与技术—航空宇航推进理论与工程] TN953[电子电信—信号与信息处理]