非静止轨道卫星网络面向应用仿真分析

摘要

研究卫星提供网络服务形成空中服务网问题,由于卫星的快速性,造成切换时延,对网络连接造成影响.为提高卫星网络承载IP业务的性能,针对非静上轨道卫星(NGEO)网络进行定量分析,提出了卫星网络IP业务应用仿真模型,描述了具体的仿真实现步骤.设计了glonassl星座模型,分析了现有仿真工具的特性,对三种NGEO卫星网络的进行仿真,从时延角度分析多业务应用效果,结果表明对业务影响最大的因素是卫星网络轨道特性,为在应用中解决问题提供参考.%In order to improve satellite network IP services performance, in terms of NGEO satellite network quantitative evaluation , the simulation model of IP services provided by satellite network is proposed, and the simu-lation steps is illustrated. Satellite constellation named by glonassl is designed. Several simulation tools are com-pared. Experiment is carried out for three types of NGEO satellite network. Multi - service running effect is analyzed from the point of time delay. The result shows that satellite orbit affects the services mostly.