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卫星群的组网发射是北斗卫星导航系统建设中一至关重要的环节,它受到技术可靠性、发射场容量以及测控能力等方方面面的制约,因而存在着很大的不确定性因素.为确保导航系统建设进度、保障系统运行效益并减少不确定因素,在实际组网发射前需进行综合的风险分析.围绕一箭多星发射方式的选择,通过建立可靠性和风险分析框架来处理其所带来的风险,不同的发射方式具有不同的技术可靠性、资源消耗和所得收益,对一箭多星发射方式的比较,为权衡选择结果提供了定量的分析.进一步考虑发射方式的技术可靠性和其他约束的影响,对不同发射方案的表现,特别是对本文新提出的组网可靠性指标进行仿真分析,最后从多角度利用ER方法综合进行卫星组网发射方案整体性定量评估.
Satellite network group launch is a crucial link in the construction of BeiDou satellite navigation system, it is subject to technical reliability, launch site capacity and measurement and control capabilities, and other aspects of the constraints, so there is a great deal of uncertainty .In order to ensure navigation System construction progress, to protect the operating efficiency of the system and reduce uncertainties in the actual network before the launch of a comprehensive risk analysis required around the multi-satellite launch mode choice, through the establishment of reliability and risk analysis framework to deal with their own The different launch modes have different technical reliability, resource consumption and income gains, and the comparison of the multi-satellite launch modes provides a quantitative analysis for weighing the selection results.Further considering the technical reliability of the launch mode and The impact of other constraints on the performance of different launch programs, especially the new network reliability indicators proposed in this paper simulation analysis, and finally from a multi-angle integrated use of ER method satellite network transmission program overall quantitative assessment.