Simulated images for Green´s function of multilayer media, an alternative to complex images

Like most inverse problems the complex image solution of the Green´s function of multilayer media is nonunique. The non-uniqueness makes the variations of the image amplitudes and locations unsteady with frequency. This is inconvenient for wideband, such as digital, circuit computations. Nevertheless, the nonuniqueness also points to the possibility of strong steadiness by fixing the image at real locations, say to those of the static images, without sacrificing convergence. These new images are renamed simulated. They are generated easily by the moment method in the spectral space without the Prony´s method