复杂星间链路网络规划评估方法

为确保以导航星座星间链路为代表的复杂星间链路的运行服务效果,在使用网络建链拓扑、路由规划参数前,应对其正确性和有效性进行评估确认.本文提出了对复杂星间链路网络规划进行参数正确性快速评估和业务服务性能评估的分级评估方法.第一级评估实现网络规划结果正确性的快速判断,涵盖了场景要素符合性、节点特性符合性、测量业务约束满足性、数传性能满足性等多维度综合化快速验证评估.第二级实现网络规划结果有效性的进一步确认,构建由星间网络行为模型和数据接入模型组成的星间链路网络仿真系统,基于星间数据传输和处理的加速仿真,统计建链数量和数据包传输性能并与业务服务指标比对,完成业务服务性能仿真评估.经对导航星座星间链路典型业务场景的两级评估结果的比对,验证了分级评估方法的有效性.

Evaluation method of complex inter-satellite link network planning

The validity of the network topology and routing planning parameters must be evaluated and confirmed before use to realize the service performance of a complex inter-satellite link network represented by the global navigation satellite system.In this study,an evaluation is designed and divided into two phases:the rapid evaluation of validity and the evaluation of the business service performance.In the first phase,a rapid evaluation method is defined for evaluating the validity of the multi-dimensional integrated network planning parameters,including scene element compliance,node feature compliance,measurement service constraint satisfaction,and data transmission performance satisfaction.In the second phase,an implementation method is proposed for evaluating the business service performance.Specifically,an inter-satellite link network simulation system comprising a network behavior model and a data access model is used to achieve accelerated simulation of the inter-satellite data transmission performance,which calculates the number of chain constructions and the packet transmission performance,and compares them with the business service indicators.Furthermore,the validity of the evaluation method is verified by comparing the evaluation results of the two phases for the same typical scenario.