低频磁性天线振动感应噪声仿真与实验  

Simulation and experiments of vibration-induced noise of low-frequency magnetic antenna

作　　者：刘瑞杰 贾地 林非池 郎量[2] LIU Ruijie;JIA Di;LIN Feichi;LANG Liang(Naval Research Academy,Beijing 100161,China;School of Cyber Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]海军研究院,北京100161 [2]华中科技大学网络空间安全学院,湖北武汉430074

出　　处：《中国舰船研究》2023年第1期158-162,共5页Chinese Journal of Ship Research

基　　金：低频电磁通信技术实验室开放基金资助项目。

摘　　要：[目的]旨在评估平台振动对低频磁性天线接收性能的影响,研究不同振动状态下的天线电磁噪声的大小。[方法]首先,采用COMSOL软件建立流体激励-天线振动仿真模型,获取天线振动数据,并进一步建立天线振动-感应噪声模型来对电磁噪声进行仿真,然后开展室外天线振动感应噪声测量实验。[结果]实验结果表明,天线振动越强,电磁感应噪声越大。当天线振动的加速度达到0.0294 m/s^(2)时,会引起皮特级以上的电磁感应噪声,从而淹没正常的通信信号。[结论]研究表明,所建立的天线振动-感应噪声仿真模型可以用于评估平台振动引起的低频磁性天线感应噪声的大小。[Objective]This paper aims to evaluate the impact of flow-induced vibration on the receiver performance of low-frequency magnetic antenna in an underwater environment,investigating the electromagnetic-induced noise of antenna under different vibration conditions.[Methods]First,a fluid excitation antenna vibration model is established using COMSOL software,then an antenna vibration-induced noise model is constructed to simulate electromagnetic-induced noise.Finally,outdoor experiments to measure the antenna vibration-induced noise are carried out.[Results]The results show that the stronger the antenna vibration is,the greater the electromagnetic-induced noise is.When the antenna vibration acceleration reaches 0.0294 m/s^(2),the electromagnetic-induced noise above the pT level will be caused,and the normal communication signal will be submerged.[Conclusion]The results show that the proposed model in this paper can be used to evaluate the vibration-induced noise of low frequency magnetic antenna.

关 键 词：低频磁性天线 振动 感应噪声 仿真 

分 类 号：U665.22[交通运输工程—船舶及航道工程]