摘要
针对目前甚低频发射天线辐射性能测量不准确的问题,对影响岸基甚低频发射天线辐射电场和磁场的各个场分量进行了分析计算。提出了在满足一定精度的要求下的甚低频辐射磁场和电场的最佳测试距离,且在夜间测试更为准确,并提出电场和磁场测试值可按照自由空间波阻抗关系相互转换的条件,为准确获取甚低频发射天线辐射性能提供了有实际意义的指导原则。
In the paper,to address the issue of low measurement accuracy of VLF antenna radiated field strength,all the electric field and magnetic field components of VLF antenna that influence the radiated electric field and magnetic field are analyzed and calculated.The optimum measurement distances of radiated electric field and magnetic field under certain accuracy are proposed.It is more accurate to measure the radiated field strength of VLF antenna at night.The condition under which the measured values of the electric field and magnetic field can be transformed into each other according to the free space wave impedance is also presented.The practical guideline for accurately evaluating the radiation performance of VLF transmitting antenna is provided.
作者
李云红
董颖辉
严亚龙
LI Yun-hong DONG Ying-hui YAN Ya-long(College of Electronic Engineering, Naval University of Engineering, Wuhan Hubei 430033, Chin)
出处
《无线电工程》
2017年第4期49-52,68,共5页
Radio Engineering
基金
国家自然科学青年基金资助项目(61501195)
海军工程大学自然科学基金资助项目(HGDYDJJ13008)
关键词
甚低频
电磁场
场强测量
辐射场计算
very low frequency
electromagnetic field
field strength measurement
radiated field strength calculation
