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Journal of Sensors
Volume 2017, Article ID 7948930, 7 pages
https://doi.org/10.1155/2017/7948930
Research Article

Experimental Study on the Localization of Moving Object by Total Geomagnetic Field

1College of Science, Harbin Engineering University, Harbin 150001, China
2College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
3College of Computer Science and Technology, Harbin Engineering University, Harbin 150001, China

Correspondence should be addressed to Chong Kang; moc.361@uehgnohcgnak

Received 10 March 2017; Revised 15 May 2017; Accepted 4 June 2017; Published 4 July 2017

Academic Editor: Eduard Llobet

Copyright © 2017 Chong Kang et al. 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.

Abstract

In the method of target localization based on magnetic anomalies, the scheme of vector field localization and experimental research are significant. Because more information of magnetic field can be measured by vector sensors, the position of the target can be directly calculated by the equations. However, the vector magnetic anomaly generated by the target is difficult to measure. And the detection range is small due to the low sensitivity of vector sensors. A method for target localization based on the total geomagnetic field is proposed. Its advantages are that the measurement of total magnetic field is not affected by the orientation of the total field sensors and the detection range is large due to their high sensitivity. In this paper, we focus on the localization using the array with the total field magnetometers. And we design an array structure with the total field magnetometers. Then, we obtain the higher order nonlinear equations for the target localization based on this array. The numerical method is used to solve the equations. Meanwhile, we present a method for eliminating the effect of geomagnetic field variations and uneven spatial distribution. In suburban roads, localization experiments were carried out. And the results showed that the relative error of target localization is less than 5% by using the proposed method.