摘要
针对潜艇固磁探潜固磁衰减快,探潜距离有限等问题,提出利用轴频磁场来探测水下潜艇。在麦克斯韦方程理论的基础上,推导出海水中水平时谐电流段在空气层中产生的时谐磁场理论公式,通过数值方法分析空气中时谐磁场强度与场点高度和场源距离的关系。仿真结果表明:空气中时谐磁场强度随场源水平距离增大的衰减速率会变小,若场源水平距离不变,随着高度的增加,场强的衰减速率变小。
The submarine＇s inherent magnetism attenuates quickly and it can be detected very closely. So the method of making use of shaft-rate magnetic field to detect underwater submarine is proposed. Based on Maxwell equations theory, this paper deduced the time-harmonic magnetic equations in air produced by finite horizental time-harmonic current immersed in blue water. With numerical method, the correlation between the magnetic field and the height and distance was analyzed. Results indicated that the attenuation speed of magnetic field in air will diminish with the distance or height increasing.
出处
《兵工自动化》
2013年第9期9-11,22,共4页
Ordnance Industry Automation
关键词
水平时谐电流
磁矢量势
轴频磁场
horizontal time-harmonic current
magnetic vector-potential
shaft-rate magnetic field
