| 海面蒸发波导对电磁波传播的影响 |
| |
| 引用本文： | 孟书生,王剑.海面蒸发波导对电磁波传播的影响[J].科技导报(北京),2009,27(9). |
| |
| 作者姓名： | 孟书生 王剑 |
| |
| 作者单位： | 中国海洋大学信息科学与工程学院,山东青岛,266100
|
| |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| |
| 摘 要： | 阐述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里叶变换解法,利用该模型对海面上高度30 m的蒸发波导中的电磁波进行了数值模拟,并运用模拟结果分析了蒸发波导对电磁波的陷获作用;通过与标准大气折射环境情况进行对比,证实了海洋蒸发波导环境下雷达实施超视距探测的可行性;根据抛物近似方程模式,给出了电磁渡在海洋边界层大气中的传播损耗计算式;最后,给出了电磁波被俘获到波导层中形成波导传播所满足的波长(频率)、发射角度以及发射源与蒸发波导所处的相对位置的关系.
|
| 关 键 词： | 蒸发波导 电磁波 路径损耗 陷获传播 |
Effect of the Sea Surface Evaporation Duct on the Propagation of Electromagnetic Wave |
| |
| MENG Shusheng,WANG Jian College of Information Science , Engineering,Ocean University of China,Qingdao ,Sh,ong Province,China.Effect of the Sea Surface Evaporation Duct on the Propagation of Electromagnetic Wave[J].Science & Technology Review,2009,27(9). |
| |
| Authors: | MENG Shusheng WANG Jian College of Information Science Engineering Ocean University of China Qingdao Sh ong Province China |
| |
| Institution: | MENG Shusheng,WANG Jian College of Information Science , Engineering,Ocean University of China,Qingdao 266100,Sh,ong Province,China |
| |
| Abstract: | This paper proposes a numerical model based on parabolic approximation equation for the propagation of the electromagnetic wave and analyzes its marching type with Fourier transform algorithm.Numerical simulation is carried out for electromagnetic wave propagation in the evaporation duct at the altitude of 30 meters above the sea surface.From the results,the effect of evaporation duct in trapping electromagnetic waves is analyzed.As compared with ambient conditions of the standard atmospheric refraction,the... |
| |
| Keywords: | evaporation duct electromagnetic wave path loss trapped propagation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
