大气波导在海上通信中的应用

发布时间：2018-01-11 19:11

本文关键词：大气波导在海上通信中的应用　出处：《电讯技术》2014年08期 　论文类型：期刊论文

【摘要】：大气波导的存在使电磁波实现超视距传播,在增加海上通信距离的同时使海上电磁波传播变得复杂。为丰富大气波导在海上通信中应用的方法和手段,研究了大气波导形成、分类以及不同类型大气波导修正折射指数轮廓线形式及形成原因,分析了电磁波在大气波导环境中实现超视距传播条件,理论研究及仿真验证了大气波导环境下超视距通信参数选择,包括电磁波临界入射角和最低陷获频率。根据海上实际气象环境特点和战场条件需求,提出大气波导在海上通信中的具体应用,对提高海上远距离通信保障能力、获取战场电磁优势具有重要意义。
[Abstract]:The existence of atmospheric waveguides enables electromagnetic waves to propagate beyond the visual range, which increases the distance of communication at sea and makes the propagation of electromagnetic waves at sea become more complicated. This is to enrich the methods and means of atmospheric waveguides used in offshore communications. The formation and classification of atmospheric waveguides and the correction of refraction exponent contours of different types of atmospheric waveguides and their causes are studied. The conditions of electromagnetic wave propagation in atmosphere waveguide environment are analyzed. Theoretical research and simulation verify the choice of OTH communication parameters in atmospheric waveguide environment, including the critical incidence angle of electromagnetic wave and the lowest trapping frequency, according to the characteristics of the marine meteorological environment and the requirements of battlefield conditions. The practical application of atmospheric waveguide in offshore communication is put forward, which is of great significance for improving the support ability of long-distance communication and obtaining the electromagnetic advantage of battlefield.
【作者单位】：海军大连舰艇学院通信系;
【基金】：国家自然科学基金资助项目(11374001)~~
【分类号】：TN928
【正文快照】： 1引言电磁波在大气环境中传播,受到大气折射的影响,会出现负折射、超折射和陷获折射等异常传播现象。大气波导是电磁波传播过程中,电波射线向下***弯曲的曲率大于地球表面的曲率,从而将电磁波能量陷获在波导结构内形成波导传播的一种陷获折射现象[1]。大气波导的出现,对雷达探

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