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Sensors 2017, 17(4), 923; doi:10.3390/s17040923

A Novel Method of Localization for Moving Objects with an Alternating Magnetic Field

1
School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
2
Key Laboratory of Ocean Acoustics and Sensing, Ministry of Industry and Information Technology, Xi’an 710072, China
*
Author to whom correspondence should be addressed.
Received: 20 February 2017 / Revised: 17 April 2017 / Accepted: 19 April 2017 / Published: 21 April 2017
(This article belongs to the Section Physical Sensors)
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Abstract

Magnetic detection technology has wide applications in the fields of geological exploration, biomedical treatment, wreck removal and localization of unexploded ordinance. A large number of methods have been developed to locate targets with static magnetic fields, however, the relation between the problem of localization of moving objectives with alternating magnetic fields and the localization with a static magnetic field is rarely studied. A novel method of target localization based on coherent demodulation was proposed in this paper. The problem of localization of moving objects with an alternating magnetic field was transformed into the localization with a static magnetic field. The Levenberg-Marquardt (L-M) algorithm was applied to calculate the position of the target with magnetic field data measured by a single three-component magnetic sensor. Theoretical simulation and experimental results demonstrate the effectiveness of the proposed method. View Full-Text
Keywords: magnetic detection technology; localization of magnetic targets; alternating magnetic field; coherent demodulation; Levenberg-Marquardt algorithm magnetic detection technology; localization of magnetic targets; alternating magnetic field; coherent demodulation; Levenberg-Marquardt algorithm
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Gao, X.; Yan, S.; Li, B. A Novel Method of Localization for Moving Objects with an Alternating Magnetic Field. Sensors 2017, 17, 923.

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