基于镜面反射模型的飞行器间数据链多径效应研究  

Research on multipath effect of data link among aircrafts based on mirror reflection model

作　　者：吴敏[1] 许仙明[1] 黄灿英[1] 吴静进[1] WU Min;XU Xianming;HUANG Canying;WU Jingjin(School of Science and Technology,Nanchang University,Nanchang 330029,China)

机构地区：[1]南昌大学科学技术学院

出　　处：《现代电子技术》2019年第20期116-118,122,共4页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(61563034);江西省教育厅科学技术研究项目(171451);江西省教育厅教学改革研究课题(JXJG-17-30-2)~~

摘　　要：为了探究多飞行器间的多径效应对其通信数据链的影响,优化多飞行器间的通信,文中以镜面反射模型为基础,建立镜面反射多径效应模型,并分析计算接收天线的功率。在此基础上,建立多飞行器间通信数据链多径模型,引进飞行器机身反射波,并计算接收机功率。通过莱斯因子与误码率、信噪比的关系得出低莱斯因子信号在低误码率要求下需要满足更大的Eb/B0。最后,提出通过扩频调制来实现信号的抗多径衰弱能力。In order to explore the influence of multipath effect among multiple aircrafts on its communication data link and optimize the communication among multiple aircrafts,a mirror reflection multipath effect model is established based on the mir?ror reflection model,and the power of the receiving antenna is analysed and calculated.On this basis,the multi?path model of the communication data link among multiple aircrafts is established,the reflected wave of the aircraft fuselage is introduced,and the power of the receiver is calculated.On the basis of the relationship between Rice factor,bit error rate and signal?to?noise ratio,a conclusion that the signal with low Rice factor needs to satisfy the requirement of larger Eb/B0 in low bit error rate has been obtained.Finally,the anti?multipath fading ability of the signal is realized by spreading spectrum modulation.

关 键 词：多径效应 镜面反射模型 数据链 飞行器 天线功率计算 扩频调制 

分 类 号：TN820.84?34[电子电信—信息与通信工程] TP393[自动化与计算机技术—计算机应用技术]