浅海环境下界面对舰船水下标量电位的影响  

The Influence of Shallow Sea Interface to the Underwater Electric Field

作　　者：陈夫余 陈聪[1] 李定国[1] 冯亚敏[1] CHEN Fuyu CHEN Cong LI Dingguo FENG Yamin(College of Sciences,Navy University of Engineering, Wuhan 430033,Chin)

机构地区：[1]海军工程大学理学院,湖北武汉430033

出　　处：《探测与控制学报》2017年第2期29-33,共5页Journal of Detection & Control

基　　金：国家自然科学基金项目资助(51109215);国防预研基金项目资助(51444070105JB11)

摘　　要：针对目前平行分层界面对舰船水下电场的影响研究未进行量化分析的不足,提出以修正系数表征界面对标量电位分布影响的方法。该方法可以量化平行分层界面对标量电位产生的影响,通过研究界面修正系数与海洋水深、海水电导率、场源间距等因素的关系,可以藉此掌握这些因素对舰船水下标量电位分布的影响规律。仿真分析表明,界面修正系数随场源间距、海水电导率增大而增大,随海洋水深、海床电导率增大而减小,不同条件下存在不同的有效修正次数。采用修正系数和有效修正次数的概念,可以将无穷项求和的场分布表达式改写为有限项求和,降低场分布表达式的复杂程度,使其更易于在场源反演、深度换算等实际应用中运用。Aiming at the problem that the present research on the influence of the parallel layer interface to the under-water electric field of ships was not quantified, a correction factor was introduced to represent the influence on the elec-tric scalar potential of the interface. This method was able to quantify the influence. The influence of these factors on the distribution of the underwater scalar potential of the ship could be obtained by considering the relationship between the interface correction factor and the water depth, the conductivity of the sea water and the distance between the elec-tric dipole and field point. Numerical simulation results showed that the correction factor would increase along with the increase of the distance between the electric dipole and field point, the increase of sea water conductivity, and would de-crease with the increase of the water depth and the seabed conductivity. The correction factor and effective correction times were introduced to change the field distribution expression of infinite items summation into finite items summa-tion, and reduce the complexity of field distribution expression. Therefore, it was easier to apply in practical applica-tion, such as field source inversion and extrapolation of the static electric field etc.

关 键 词：舰船水下电场 修正系数 数值仿真 标量电位 界面 

分 类 号：TJ6[兵器科学与技术—武器系统与运用工程]