大气波导对电磁波陷获传播影响的数值模拟和试验验证  

Numerical Simulation and Experimental Validation of Electromagnetic Waves Trapped Propagation in Atmospheric Ducts Environments

作　　者：黄小毛[1] 张永刚[1] 罗宁 唐海川[1] 王华[1] 

机构地区：[1]海军大连舰艇学院,大连116018 [2]海军南海舰队司令部,湛江524000

出　　处：《微波学报》2007年第B08期177-184,共8页Journal of Microwaves

基　　金：国家863项目(2002AA639300)

摘　　要：海洋环境中经常出现大气波导,它能够陷获电磁波而形成明显的异常传播特征,对雷达等电子系统性能具有重要的影响,本文主要从数值模拟和试验验证的方法,研究大气波导陷获电磁波所产生的异常传播特征,论文首先简要分析了电磁波传播的抛物近似方程数值模型及其步进类型的傅立叶解法,利用这一数值模型对多种大气波导环境下电磁波进行数值模拟,利用模拟的结果分析大气波导对电磁波的陷获作用,并利用1999年5月6日舰船在杭州湾的实验数据对本文相关的结论进行验证。Electromagnetic waves may be trapped when they propagate in atmospheric ducts which often occur in marine environments, as a result, the propagation characteristics are quite different from that in normal atmosphere conditions. The aim of this article is to study the anomalous propagation characteristics caused by atmospheric ducts using the numerical simulation and experimental validation. Brief description of parabolic approximation equation model and its marching type Fourier algorithm is introduction, which is used to numerically simulate electromagnetic waves propagation in different kinds of atmospheric ducts, form the results, we get some conclusions associated with the trapped effect of ducts environments, the experimental data extracted from HangZhou Gulf Experiment on May 6 of 1999 is analyzed to validate the anomalous propagation characteristics.

关 键 词：大气波导 电磁波 陷获传播 数值模拟 试验验证 

分 类 号：TN011[电子电信—物理电子学] TN011.3