MRTD electromagnetic scattering analysis

In this paper; we have der:eloped a multiresolution timedomain (MRTD) schem e to analyze two-dimensional (2-D) scattering objects with comparison to th e corresponding finite-difference timedomain (FDTD) method. We have applied an anisotropic perfectly matched layer (APML) absorber open boundary trunc ation in the content of the MRTD scattering analysis. In addition, we have constructed an MRTD time-domain incident plane-wave pulse, and have develop ed nn MRTD near-to-far-zone transform to evaluate scattered fields. In orde r to obtain effectively incident and scattered fields, we have adopted the pure scattered-field formulation in this research. To validate the develope d MRTD approach, we have analyzed the scattering widths (SWs) for perfect e lectric conducting (PEC) and dielectric cylinders. We observed good agreeme nt between the results derived from the MRTD and FDTD, while the MRTD schem e requires much less computer memory and computational time with the same l evel of accuracy. (C) 2001 John Wiley & Sons, Inc.