Availability Modeling and Simulation of Satellite Navigation System based on Integration of PDOP and Reliability Maintainability Supportability
作者单位：China Academy of Aerospace Standardization and Product Assurance
会议名称：《第九届中国卫星导航学术年会》
会议日期：2018年
学科分类：08[工学] 080401[工学-精密仪器及机械] 081105[工学-导航、制导与控制] 0804[工学-仪器科学与技术] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程]
基 金：Project(61503077)supported by the National Science Foundation of China
关 键 词：navigation system PDOP Designed life RMS GSPN Bayesian network
摘 要：Due to the satellite-launcher-station interactive operation, coupling of PDOP, reliability and maintainability and supportability(RMS), an availability modeling and simulation method of a navigation system is proposed by GSPN, Bayesian network and outage analysis. The availability of a per-slot is conformed based on GSPN, considering short scheduled or unscheduled outage of bus and payload,long outages, on-orbit or ground backup, testing time in launching site as well as launching reliability. Taking PDOP under different outages as the relationship of slots and the service availability is conformed based on Bayesian network. The vulnerable slots are identified and different optimization designs are compared. The simulation results have demonstrated that this method can be applied for navigation system design optimization, and satellite-launcher-station quantitative decision.