VHF频段低端超视距传播机制研究  

Investigation on BLOS Propagation Mechanisms in Low-VHF Band

作　　者：王伟[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电通信技术》2007年第6期7-9,共3页Radio Communications Technology

摘　　要：简要介绍了VHF频段超视距电波传播媒质在不同纬度、不同高度的空间分布情况,并根据不同的传播媒质和传播机理对超视距电波传播机制进行了分类。对每种超视距电波传播机制所发生的空间区域、形成机理、传播特性以及应用特点作了较为详尽的阐述,同时对各种超视距传播机制的不同点进行了比较。最后指出充分认识各种传播机制,对于合理利用各种通信资源,设计多种传播机制兼容的通信设备具有一定的参考作用。The distribution of propagation mediums is introduced in the region of various latitudes and altitudes, and the category of propagation mechanisms is obtained according on mediums and propagation characteristics. Each propagation mechanism is illuminated exhaustively with its existence region, generated causation, propagation characteristics and application in communication system, the dissimilarity of various BLOS propagation mechanisms is also compared in this paper. Finally, the importance of distinguishing propagation mechanisms is presented, which provides some reference for designing multi-mechanism communication devices.

关 键 词：超视距 电离层散射 突发E层 流星余迹 

分 类 号：TN926[电子电信—通信与信息系统]