| 基于磁场能量密度梯度的磁源定位技术 |
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| 引用本文： | 张树,刘大明,刘胜道,张华,田东.基于磁场能量密度梯度的磁源定位技术[J].上海交通大学学报,2015,49(4):424-428. |
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| 作者姓名： | 张树 刘大明 刘胜道 张华 田东 |
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| 作者单位： | (海军工程大学 电气与信息工程学院, 武汉 430033) |
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| 基金项目： | 国家自然科学基金资助项目(51107145，51377165) |
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| 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%.
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| 关 键 词： | 电磁学 磁场能量密度 磁源定位 磁传感器 梯度定位 |
| 收稿时间： | 2014-05-07 |
Technologies for Positioning of Magnetic Source Based on Gradient of Magnetic Energy Density |
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| ZHANG Shu
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LIU Da-ming
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LIU Sheng-dao
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ZHANG Hua
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TIAN Dong.Technologies for Positioning of Magnetic Source Based on Gradient of Magnetic Energy Density[J].Journal of Shanghai Jiaotong University,2015,49(4):424-428. |
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| Authors: | ZHANG Shu LIU Da-ming LIU Sheng-dao ZHANG Hua TIAN Dong |
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| Institution: | (College of Electrical and Information Engineering, Navy University of Engineering, Wuhan 430033, China) |
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| Abstract: | Abstract： The accuracy of the traditional positioning method is influenced by the differences between the mathematical models, dipole model or ellipsoid model of the magnetic source and the actual magnetic source. The conclusion that the gradient of magnetic energy density points consistently at the magnetic source is extended. The positioning of the ferromagnetic targets in geomagnetic field is achieved. Experimental results show that the positional accuracy can reach 95% no matter the magnetic field is far or near. |
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| Keywords: | electromagnetism magnetic energy density magnetic source location magnetic sensor gradient location |
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