机载光纤总线拓扑结构的性能研究  

Research on Performance of Airborne Optical Fiber Bus Topology

作　　者：伊小素[1] 余楚璇 曾华菘 YI Xiao-su;YU Chu-xuan;ZENG Hua-song(School of Instrumentation and Optoelectronic Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《通信技术》2020年第4期830-837,共8页Communications Technology

摘　　要：光纤总线因其体积小、质量轻、损耗低、容量大、抗电磁干扰能力强等优势,被广泛应用于机载系统。光纤总线网络拓扑结构类型多样,且不同拓扑下总线网络的性能表现不同,因此根据机载系统特性选取合适的光纤总线拓扑结构至关重要。面向机载光纤总线中不同组网条件,针对不同拓扑、分析时延、吞吐量和可靠性等关键性能参数及其影响因素,对总线进行建模仿真,分析时延和吞吐量,并为各拓扑结构建立失效模型,分析系统可靠性。仿真与计算结果表明,总线型拓扑结构双冗余系统更适用于机载光纤总线网络。Optical fiber bus is widely used in airborne system because of its small size,light weight,low loss,large capacity,and strong electromagnetic interference resistance.There are various types of optical fiber bus network topologies,and the performance of the bus network under different topologies is different.Therefore,it is important to choose the appropriate optical fiber bus topology based on the characteristics of the airborne system.Faced with different networking conditions in the airborne fiber-optic bus,for different topologies,key performance parameters such as delay,throughput,and reliability and their effects are analyzed.Meanwhile,the bus is modeled and simulated,the delay and throughput analyzed,the failure model established for each topology so as to explore the system reliability.Simulation and calculation results indicate that the bus-type topology dual-redundant system is more suitable for airborne fiber-optic bus networks.

关 键 词：机载光纤总线 拓扑结构 时延 吞吐量 可靠性 

分 类 号：TN919.1[电子电信—通信与信息系统]