基于SNS3的低轨卫星通信系统网络仿真  

Network Simulation of Low Earth Orbit Satellite Communication System Based on SNS3

作　　者：吴奉微 刘川 尚丹 耿敏 WU Fengwei;LIU Chuan;SHANG Dan;GENG Min(Chengdu ZhongKeWei Information Technology Research Institute Co.,Ltd.,Chengdu 610054,China)

机构地区：[1]成都中科微信息技术研究院有限公司,四川成都610054

出　　处：《天地一体化信息网络》2024年第4期75-84,共10页Space-Integrated-Ground Information Networks

摘　　要：在卫星网络仿真平台SNS3的基础上,通过构建准确的卫星轨道模型、物理层链路模型以及网络协议模型,提出并设计一种适用于LEO卫星通信系统的天线模型,搭建适用于低轨卫星通信的网络仿真平台,实现对低轨卫星通信网络的全面仿真,解决SNS3仅支持单颗GEO卫星多点波束卫星网络的模拟而无法对LEO卫星通信系统进行仿真的问题。对关键模型进行仿真验证,仿真结果表明了所提模型的有效性;对LEO卫星通信系统端到端时延、网络吞吐量等关键指标进行仿真,仿真结果表明了所提模型应用于LEO通信系统能够有效模拟低轨卫星通信网络的运行过程,并评估不同网络参数和协议性能,为低轨卫星通信系统协议体制建设和关键技术的仿真验证提供借鉴和参考。On the basis of SNS3,by constructing an accurate satellite orbit model,physical layer link model and network protocol model,an antenna model suitable for LEO satellite communication system was proposed and designed,and a network simulation plat‐form suitable for low-orbit satellite communication was built,which realized the comprehensive simulation of low-orbit satellite com‐munication network.Solved the problem that SNS3 only supports the simulation of a single GEO satellite multipoint beam satellite net‐work,but cannot simulate the LEO satellite communication system.In this paper,the key models were simulated and verified,and the simulation results showed that the effectiveness of the proposed model was valid.The simulation results showed that the model could effectively simulate the operation process of the LEO satellite communication network and evaluate the performance of different net‐work parameters and protocols.It provided a reference for the construction of protocol system and the simulation and verification of key technologies of low-orbit satellite communication system.

关 键 词：低轨卫星通信系统 SNS3 网络仿真 

分 类 号：TN927[电子电信—通信与信息系统]