Multi-GPOF Method in the Calculation of the Rectangular Waveguide Layered Green's Functions

Abstract

In this letter, we adopt a new procedure in the calculation of the layered Green's functions in the rectangular waveguide structure. In this procedure, the surface-wave poles are extracted first, and then the generalized pencil-of-function (GPOF) method is applied to approximate the spectral-domain Green's function along the real axis of the plane directly. Because no branch point is introduced in this procedure, improvement can be achieved compared to the traditional discrete complex image method (DCIM). In order to make this procedure more accurate and robust in both near-and far-field regions, a specially devised multiple-times GPOF procedure is applied to approximate the spectral-domain Green's function. Numerical results in this letter demonstrate the accuracy of our method.Index Terms-Discrete complex image method (DCIM), generalized pencil-of-function method (GPOF), GE's method, multilayered Green's function, rectangle waveguide.

Enhancing SEM signature via bistatic radar configuration of small bisectors

“…In a monostatic configuration, however, structure occlusion from the radar line of sight happens, which degrades the energy of the corresponding resonance to a level that makes it very difficult to extract and estimate this resonance accurately using the matrix pencil method (MPOF) [14][15][16][17]. Thus, any derived target features will lack the crucial information necessary to implement a successful identification operation.…”