摘要
针对平行分层海域中电偶极子源的定位问题,提出利用三个电场强度传感器同时确定场源位置、场源强度及分界面方位共9个参量的方法 .首先借助镜像法及边界条件推导了三层平行分层海域中电偶极子源在海水中产生电场强度的矩阵表达式,引入场强传递矩阵,然后通过传递矩阵求逆的方法消除电偶极子源的偶极矩参数,得到以电偶极子源位置及分界面方位为未知量的非线性方程组,将待确定的9个未知参数减少为6个待拟合量,并通过拟合的方法得到电偶极子源位置和分界面方位的最优解.最后通过仿真算例检验所提方法的有效性.结果表明,该定位方法在一定条件下可以较精确地确定场源位置、分界面方位.该方法经适当完善还可以应用于鱼雷等水下航行器的制导过程.
Aiming at the location of electric dipole sources in parallel layered seas,a method of using three electric field intensity sensors to simultaneously determine the field source position,electric dipole moment,and interface orientation is proposed.First,the matrix expressions of electric field strength generated by electric dipole sources in three layers of parallel and layered seas in seawater were derived by using the mirror method and boundary conditions.The field strength transfer matrix was introduced,and the electric dipoles were eliminated by the inversion of the transfer matrix.The parameters of the dipole moments of the sub-sources are used to obtain a set of nonlinear equations in which the position of the electric dipole source and the orientation of the interface are unknown.The9 unknown parameters to be determined are reduced to6 quantities to be fitted,and the optimal solution of the electric dipole source position and interface orientation is obtained through the fitting method.Finally,the validity of the proposed method is verified by simulation examples.The results show that the localization method can accurately determine the position of the field source and the orientation of the interface under certain conditions.The method can also be applied to torpedo guidance process after proper improvement.
作者
杜初阳
陈聪
黄高聪
DU Chu-yang;CHEN Cong;HUANG Gao-cong(Department of Basic Courses,Naval University of Engineering,Wuhan,Hubei 430033,China;The Navy Unit No.92326,Zhanjiang,Guangdong 524002,China)
出处
《电子学报》
EI
CAS
CSCD
北大核心
2021年第9期1761-1767,共7页
Acta Electronica Sinica
基金
主动电场尾流自导关键技术研究(No.HJ20191C080752)。
关键词
平行分层海域
电偶极子
定位
镜像法
传递矩阵
parallel layered seas
electric dipole
locating
method of images
transfer matrix
