1. A method of identifying a double-layer dipole from a magnetic image, comprising: obtaining a magnetic image of a magnetic field generated by a double-layer dipole, wherein said double-layer dipole is of undefined shape, size, depth and orientation; submitting said magnetic image to a current dipole constructing system to determine a 3D position and momentum of an electric current in accord with the magnetic image; assigning the 3D position of the electric current to the geometric center of a single double-layer 2D patch; and deeming the geometric center of the single double-layer 2D patch to the position of an equivalent dipole moment of said double-layer dipole, said equivalent dipole moment being characterized by the generation of an electric field substantially similar to that produced by said double-layer dipole.