基于散射传播的超短波超视距通信技术研究  

Research on VHF NLOS Communication Technology based on Scattering Propagation

作　　者：武广友 WU Guangyou(Guangzhou Communication Research Institute,Guangzhou Guangdong 510310,China)

机构地区：[1]广州通信研究所,广东广州510310

出　　处：《通信技术》2021年第9期2080-2086,共7页Communications Technology

摘　　要：靠直射波传播的超短波通信除了具有一定的“绕射能力”外,也可进行“超视距”通信。基于大气中对流层电磁波散射的机制,论述了超短波超视距通信的机理,分析计算了散射信道的传播损耗。在此基础上,根据超短波散射传播的特征给出了超短波超视距通信采用的分集接收技术和自适应技术的实现方法,并简要介绍了运行原理和作用。最后,简述了超短波超视距通信的主要应用方向和技术发展趋势。Ultra-short wave communication which propagates by direct wave has certain“diffraction ability”,also can carry on“Not line of sight”communication.Based on the scattering mechanism of tropospheric electromagnetic wave,the mechanism of VHF NLOS communication is discussed,and the propagation loss of scattering channel is analyzed and calculated.According to the characteristics of ultra-short wave scattering propagation,diversity receiving technique and adaptive technique are presented,and the operating principle and function are briefly introduced.Finally,the main application and technical development trend of VHF NLOS communication are put forward.

关 键 词：超短波通信 超视距通信 散射传播损耗 分集接收技术 自适应技术 

分 类 号：TN926.4[电子电信—通信与信息系统]