%0 Journal Article
%T 浅海中时谐水平电偶极子在空气中的极低频磁场
%A &lt
%A /br&gt
%A SUN Yuhui
%A LIN Chunsheng
%A WU Haibing
%A ZHAI Guojun
%J 国防科技大学学报
%D 2018
%R 10.11887/j.cn.201803013
%X 为深入分析空气中的极低频磁场，用时谐水平电偶极子等效船舶被主轴调制的水下腐蚀相关电流。根据Maxwell方程组和电磁场边界条件建立浅海条件下电偶极子在空气中的矢量磁位模型，进一步推导了磁场表达式,并利用快速汉克尔变换计算磁场的传播规律。测量了水池碳棒电极和海上钛基电极的磁场，验证了磁场的实用性和模型的有效性。</br>In order to analyze the ELF(extremely low frequency) magnetic field of ships, the corrosion related current modulated by the ship shaft was equivalent to a time harmonic HED (horizontal electric dipole). Based on Maxwell′s equations and boundary conditions of electromagnetic field, the magnetic vector potential in air was modeled, and then the magnetic field expressions of the HED were deduced. The propagation character of the magnetic field was calculated by fast Hankel transform. The magnetic field of carbon electrodes in the pool and Ti based electrodes at sea were measured. Result shows the practicality of the magnetic field and the validity of the model.
%K 极低频磁场 时谐水平电偶极子 矢量磁位 航空磁探&lt
%K /br&gt
%K extremely low frequency magnetic field time-harmonic horizontal electric dipole magnetic vector potential aerial magnetic detection
%U http://journal.nudt.edu.cn/gfkjdxxb/ch/reader/view_abstract.aspx?file_no=201803013&flag=1