The extended equivalent source technique with undetermined sources

The extended equivalent source technique is a method of computing electromagnetic scattered fields from discrete equivalent sources which lie some distance away from a surface where a boundary condition is enforced. Generally the number K of unknown complex source amplitudes is taken equal to the number I of known complex boundary conditions. However, one can enquire whether there is any advantage to utilizing more unknown sources that there are boundary conditions and solving their amplitudes by a renormalization, maximum likelihood, or maximum entropy procedure. Here the author considers a Gibbs maximum entropy method appropriate for complex data processing if I>