An identification method of electric current dipoles in spherically symmetric conductor

A numerical method is proposed for the identification of electric current dipoles in a spherically symmetric conductor. We use observations of the magnetic induction outside of the conductor. Our idea is to probe electric current dipoles using an indicator function that satisfies the Laplace equation. In our method, any a priori information for the number of dipoles and initial estimates are not required. The effectiveness of the method is shown by numerical examples.