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

Abstract

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.

Key words: electromagnetism, magnetic energy density, magnetic source location, magnetic sensor, gradient location

CLC Number:

TM 15

ZHANG Shu,LIU Daming,LIU Shengdao,ZHANG Hua,TIAN Dong. Technologies for Positioning of Magnetic Source Based on Gradient of Magnetic Energy Density[J]. Journal of Shanghai Jiaotong University, 2015, 49(04): 424-428.

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