The inverse solution of Equation (7) yields only the radiating VECS.
tot] are the corresponding radiating VECS and total electric field at a point denoted by h.
NON-RADIATING VECS, NON-RADIATING CONTRAST FACTOR, AND THE OBJECTIVE FUNCTION
The non-radiating part of VECS cannot be obtained by solving the forward scattering equation directly, as the non-radiating part of VECS generates zero electric field outside a scatterer.
The non-radiating part of the VECS does not generate any fields outside the scatterer,
The internal scattered field can be expressed in terms of the radiating and non-radiating parts of the total VECS within the scatterer:
The radiating VECS formulation can be written in a matrix form based on (14),
The non-radiating VECS can be obtained by replacing the VECS and the radiating VECS from (22) and (23), respectively, into (11):
The non-radiating VECS given by (24) contains two unknowns, namely the non-radiating contrast factor, [[kappa].
2]-Norm of the external scattered field due to the non-radiating VECS.