摘要
舰船底部附近的电化学电流会产生恒定电磁场,研究这种电磁场分布对水下侦测舰船非常重要.文中将该场源理想化为一个直流水平电偶极子,这一直流水平电偶极子是低频电偶极子在频率趋于0时的极限情况.利用贝赛尔函数的性质,将这些积分表达式简化为一系列简单的解析表达式,并在该表达式的基础上进行分析讨论算出电磁场的空间分布.
In the region near the submarine, the static electromagnetic field may be gen- erated by the electro-chemic current. The knowledge about the distribution of the field in the region is very important for finding the submarine. In this paper, the excited source of the field is idealized as a horizontal static electro dipole, based on the integral expressions of field excited by a low frequency electro dipole in the conducting half- space, taking the limit of ω→0, the integral expressions, of the field excited by the stat- ic electro dipole are obtained. These integral expressions related to Bessel-fanction may the simplified as a set of very simple analytical formula, and based on which the discus- sion is made and the space distribution of electromagnetic field is Calculated.
出处
《电波科学学报》
EI
CSCD
北大核心
2014年第6期1030-1035,1056,共7页
Chinese Journal of Radio Science
关键词
恒定电磁场
水下侦测
电偶极子
贝塞尔函数
underwater detection
static electromagnetic fields
electronic dipole
Bes-sel functions
