极地甚低频电磁波跨冰层传播衰减特性分析  

Analysis of Attenuation Characteristics of Polar VLF Electromagnetic Wave Propagation across Ice Layer

作　　者：张嘉雨 冯士民[1] 窦高奇[1] 代晨鹏 王臻 王颢 ZHANG Jiayu;FENG Shimin;DOU Gaoqi;DAI Chenpeng;WANG Zhen;WANG Hao(School of Electronic Engineering,Naval University of Engineering,Wuhan 430000,China)

机构地区：[1]海军工程大学电子工程学院,湖北武汉430000

出　　处：《水下无人系统学报》2024年第5期855-863,共9页Journal of Unmanned Undersea Systems

基　　金：国家自然科学基金项目资助(61871473);海军工程大学自主研发计划项目(2023503090)。

摘　　要：甚低频(VLF)电磁波由于其能够穿透海水的特性,成为在极地海洋环境下进行跨介质通信的可靠方法。文中针对极地VLF电磁波在跨冰层传播问题,建立了基于传输矩阵的多层介质传播模型。通过二端口网络等效电路方法,研究了VLF电磁波在空气-冰层-海水中的衰减特性以及入射角度的影响。通过结合仿真和实地实验数据,首次量化了在冰层中的VLF电磁波的场强衰减规律,揭示了每米冰层厚度衰减不足1 dB的重要发现。同时评估了海冰对极地VLF通信的影响,结果表明海冰对VLF电磁波的损耗较小,不是影响VLF通信的主要因素。Very low frequency(VLF)electromagnetic wave provides a reliable method for cross-medium communication inpolar sea environments due to its ability to penetrate seawater.In order to solve the problem of polar VLF electromagneticwave propagation across the ice layer,a multilayer dielectric propagation model based on the transmission matrix wasestablished in this paper.The attenuation characteristics of VLF electromagnetic waves in air-ice layer-seawater and theinfluence of incident angle were studied by using the two-port network equivalent circuit method.Through simulation and fieldexperiment data,the attenuation law of VLF electromagnetic wave field intensity in the ice layer was quantified for the firsttime,revealing the important discovery that the attenuation of VLF electromagnetic wave field intensity in the ice layer wasless than 1 dB per meter.The effect of sea ice on VLF communication in polar regions was evaluated.The results show thatsea ice had less loss on VLF electromagnetic waves and was not the main factor affecting VLF communication.

关 键 词：极地海洋 甚低频电磁波 跨介质通信 传输矩阵 二端口网络 

分 类 号：TJ6[兵器科学与技术—武器系统与运用工程] U675.7[交通运输工程—船舶及航道工程]