近距离散射跨山通信传播损耗的简便算法  

Simple Engineering Algorithms of Transmission Loss in Short Range Troposcatter Communications across Mountains

作　　者：王立国 朱宏光[1] WANG Liguo;ZHU Hongguang(The 54th Research Institute of CETC, Shijiazhuang 050081, China)

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：《无线电工程》2018年第6期512-515,共4页Radio Engineering

基　　金：通信抗干扰国家重点实验室基金资助项目(EX17641Z080)

摘　　要：近距离散射跨山通信存在山峰绕射和对流层散射2种电波传播模式,需要按照不同的传播方式计算传播损耗。无论是绕射还是散射,现有的算法都不能快速预计出传播损耗。为了便于在实际应用中对传播损耗做出快速预计,结合实测数据,给出了近距离跨山通信中散射传播损耗的简便工程算法。介绍了山峰绕射传播损耗的计算方法,提出了绕射参数的工程算法,并给出了近距离散射跨山通信站址选择的建议,为选址提供理论参考。There are two radio wave propagation modes in short range troposcatter communications across mountains：diffractionand troposcatter. The transmission loss should be calculated in accordance with different propagation modes. The existing algorithms can’t quickly predict the transmission loss regardless of diffraction or troposcatter. In order to quickly predict the transmission loss in practical application, a simple engineering algorithm of troposcatter transmission loss in communications across mountains is given combined with measured data. The calculating method of transmission loss of mountain diffraction is introduced. An engineering algorithm of diffraction parameter is proposed. Some suggestions on site selection of short range troposcatter communications across mountains are given and a theoretical reference is provided for site selection.

关 键 词：近距离跨山通信 绕射 散射 传播损耗 

分 类 号：TN926.4[电子电信—通信与信息系统]