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| 甚低频远程遥控信号传输特性分析及接收方法 |
| Analysing Transmission Characteristic and Receiving Method of Very Low Frequency Remote Signal |
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| DOI：10.3969/j.issn.1671-5322.2007.03.005 |
| 中文关键词: 甚低频电磁波 遥控水雷 入水深度 正交天线 |
| 英文关键词: VLF radio wave romote-control naval mine depth-enter water orthogonal antennas |
| 基金项目: |
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| 中文摘要: |
| 分析甚低频电磁波传播路径与方式,给出场强的计算公式.推导了海水中的基本电磁波方程,分析了电磁波的入水深度和入水后相位的变化,特别是电场和磁场分量从水面传播到水下时场强的衰减,并初步估算了甚低频遥控信号的入水深度.采用正交天线,不论信号来自任何方向,它接收到的都是最大值. |
| 英文摘要: |
| By analyzing transmission pathway and mode of VLF radio wave,calculation formula of field intensity is given.Baisc radio wave equation underwater is deduced,underwater depth and phase change of radio wave are analyzed,especially,field intensity attenuation from up to underwater of electric field and magnetic field,astimation of the depth of VLF romote signal to enter water.Because of using orthogonal antennas,it receives signal which from all-round is strongest intensity. |
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