多径信号的相干性及对测向的影响  

Multipath signal coherence and the effect of direction finding

作　　者：朱进勇[1] 王立冬[1] Zhu Jinyong Wang Lidong(Department of Electronics and Optics Engineering, Ordnance Engineering College, Shijiazhuang 050003, Chin)

机构地区：[1]军械工程学院电子与光学工程系,河北石家庄050003

出　　处：《微型机与应用》2016年第20期17-20,24,共5页Microcomputer & Its Applications

摘　　要：在无线电测向领域,相干信号对测向精度和分辨性能有着较大影响,如果将相干信号和多径信号之间的关系相互混淆,会产生较大的测向误差。首先建立了空地多径效应三径模型,对多径信号之间的关系和多径信号对测向的影响进行具体分析;采用相关性理论,对信号的相干性进行了详细分析,进而讨论了多径信号的相干性;最后,在SystemVue软件环境下对空地多径效应三径模型进行了仿真建模,由仿真结果得出了多径信号之间的相干规律及其对测向的影响规律。In the field of radio direction finding,coherent signal has a great influence on the performance of direction finding precision and resolution. If the coherent signal and the relationship between the multipath signal are mutual confused,it will produce larger direction finding errors. At the first,clearing multipath effect is established by the three diameter model,the multipath signal and the relationship between the multipath signals are specificly analyzed. Coherence of signals are analyzed in detail by correlation theory,and then the multipath signal coherence is discussed. Finally,the clearing multipath effect three diameter model simulation modeling is established in System Vue software environment. The coherence of the law and influence law of direction finding in the multipath signal are obtained by the simulation results.

关 键 词：相干信号 多径效应 测向 SystemVue软件 

分 类 号：TN95[电子电信—信号与信息处理] TN97[电子电信—信息与通信工程]