ELECTROMAGNETIC SCATTERING OF THREE-DIMENSIONAL (3D) OBJECTS EMBEDDED IN A HALF SPACE WITH RANDOM ROUGH SURFACE
Date of Award
Doctor of Philosophy (PhD)
Xu , Xiao-bang
Dimitrova , Elena S.
Martin , Anthony Q.
Pearson , L. Wilson
This dissertation presents a Monte-Carlo multidomain pseudospectral time-domain (MPSTD) algorithm developed for the analysis of scattering from a two dimensional (2D) and three dimensional (3D) object buried below a random rough surface separating two half spaces. In the development, special attention is paid to the 3D computation domain decomposition, PML derivations, filtering technique and subdomain mapping involving the random rough surface as well as the subdomain patching along the rough surface. The Mote-Carlo MPSTD algorithm is then employed to determine the scattering of objects of various shapes and electromagnetic properties; embedded in the lower half space with different permittivity and the roughness of the random rough surface may vary. Sample numerical results are presented, validated, and analyzed. Then, scattering of objects buried in layered structure with random rough surface is studied using MPSTD algorithm. Through the analysis, it is observed that the roughness of the random rough surface and the electromagnetic properties of the lower half space can significantly affect the scattered signature of the buried object.
Liu, Wei, "ELECTROMAGNETIC SCATTERING OF THREE-DIMENSIONAL (3D) OBJECTS EMBEDDED IN A HALF SPACE WITH RANDOM ROUGH SURFACE" (2013). All Dissertations. 1106.