小卫星星座非IP组网建模与仿真

Modeling and Simulation of Small Satellite Constellation Non-IP Networking

针对移动IP技术需要依赖地面的家乡代理完成每个卫星地址注册与解析的不足,给出一种新的非IP构架的小卫星星座组网模型,并设计相应网络通信协议。组网模型不使用中高轨道卫星做数据与测控中继节点,在星际链路上使用定向天线指向器保证星际链路的连续性和链路切换。在OPNET平台上设计了通用的卫星节点通信模型和一个基于加权最短路径算法的卫星路由信息协议(SRIP),并进行了星座组网仿真实验。仿真结果验证了星座组网模型设计的正确性。该模型为小卫星星座依赖于自身网络,而不依赖于中高轨道卫星做中继完成网络测控提供了一种新思路。

A novel non- IP architecture without utilizing home agents on ground to register and resolve addresses for mobile small satellites is given to accomplish the small satellite constellation networking. The constellation networking model and protocols are designed. The networking model doesn＇t apply MEO/GEO（ Medium Earth Orbit/Geostationary Earth Orbit） satellites for data and TT＆C （ Telemetry Tracking and Command） relay. Directional antenna pointers are employed to maintain or switch over the intersatellite links. The general satellite communication model and a satellite route information protocol（SRIP） based ＇on weighted shortest path algorithm have been designed, and the simulation experiments have been done in OPNET as well. The results validate the design of the networking model and SRIP protocol. This work opens a new vista for networking TT＆C for small satellites constellation.