基于磁场能量密度梯度的磁源定位技术  

Technologies for Positioning of Magnetic Source Based on Gradient of Magnetic Energy Density

作　　者：张树[1] 刘大明[1] 刘胜道[1] 张华[1] 田东[1] 

机构地区：[1]海军工程大学电气与信息工程学院,武汉430033

出　　处：《上海交通大学学报》2015年第4期424-428,共5页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(51107145;51377165)

摘　　要：针对目标磁源的数学模型(单磁偶极子和椭球体加线性磁偶极子阵列等)与实际目标磁矩具体分布存在差别而影响定位精度的问题,将单个磁偶极子的磁场能量密度场的梯度方向指向场源的结论进行了推广,实现了地磁场中铁磁目标的定位.船模实验结果表明:不管是远场还是近场,目标是船模还是理想偶极子(钕铁硼),定位精度均达到95%.The accuracy mathematical models, source. The conclusion source is extended. Th e tho of d is influenced by the differences between the the magnetic source and the actual magnetic that the gradient of magnetic energy density points consistently at the magnetic positioning of the ferromagnetic targets in geomagnetic field is achieved. Experi mental results show that the positional accuracy can reach 95% no matter the magnetic field is far or near

关 键 词：电磁学 磁场能量密度 磁源定位 磁传感器 梯度定位 

分 类 号：TM15[电气工程—电工理论与新技术]