Localizing a magnetic dipole using a gradiometer

Lokaliseren van een magnetische dipool met behulpvan een gradiometer

Bachelor thesis (2020)

Authors

Q. Chen Electrical Engineering, Mathematics and Computer Science

Contributors

A.R.P.J. Vijn Mathematical Physics - EEMCS (mentor)
Eugene Lepelaars TNO (mentor)
Arnold Heemink Mathematical Physics - EEMCS (graduation committee member)
M.B. van Gijzen Numerical Analysis - EEMCS (graduation committee member)
Faculty
Electrical Engineering, Mathematics and Computer Science, Electrical Engineering, Mathematics and Computer Science
Copyright: © 2020 Qianqian Chen
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Published Date

25-06-2020

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Abstract

Magnetic anomaly detection (MAD) is a widely used method for detecting ferromagnetic targets, particularly hidden objects. A common way to localize a magnetic target is to look at the maximum of the magnitude of the magneticeld gradient. In this thesis, we consider a threeaxis total eld gradiometer which measures the gradient of the magnitude of the magnetic eld along three orthogonal axes. Based on the measured data from the three-axis total eld gradiometer, we decompose the inversion problem into two linear systems. By solving those two systems, we get an approximation for the location and moment that we are looking for. For the considered gradiometer, we can improve the parameters if the detailed geometry of the gradiometer is taken into account.

Files

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