Source identification in time domain electromagnetics

Authors:
J. Benoit;C. Chauvière;P. Bonnet
Affiliations:
Clermont Université, Université Blaise Pascal, BP 80026, 63171 Aubière Cedex, France and CNRS Campus des Cézeaux, UMR 6602, Institut Pascal, 63171 Aubière Cedex, France;Clermont Université, Université Blaise Pascal, BP 80026, 63171 Aubière Cedex, France and CNRS Campus des Cézeaux, UMR 6620, LM, 63171 Aubière Cedex, France;Clermont Université, Université Blaise Pascal, BP 80026, 63171 Aubière Cedex, France and CNRS Campus des Cézeaux, UMR 6602, Institut Pascal, 63171 Aubière Cedex, France
Venue:
Journal of Computational Physics
Year:
2012

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Abstract

In this paper, we introduce two numerical methods to get an electric source that gives a specified electromagnetic field some time after the source starts emitting. The first one is called the Time Reversal Method (TRM) and originates from acoustics and the second one is called Linear Combination of Configuration Fields (LCCF) and consists in constructing and solving a linear problem in order to find a possible required source. In this paper, we show on 1D and 2D examples that the last method gives lower relative errors when compared with the time reversal method.