Analysis of transient scattering from composite arbitrarily shaped complexstructures

A time-domain surface integral equation approach based on the electric fiel d formulation is utilized to calculate the transient scattering from both c onducting and dielectric bodies consisting of arbitrarily shaped complex st ructures. The solution method is based on the method of moments (MoM) and i nvolves the modeling of an arbitrarily shaped structure in conjunction with the triangular patch basis functions. An implicit method is described to s olve the coupled integral equations derived utilizing the equivalence princ iple directly in the time domain. The usual late-time instabilities associa ted with the time-domain integral equations are avoided by using an implici t scheme. Detailed mathematical steps are included along with representativ e numerical results.