FDTD Computation Of Scattering By Buried Objects

The electromagnetic scattering by buffed objects is one of theoretical basis of microwaveremote system, such as scatterometer, ground penetrating radar (GPR) and synthetic apertureradar (SAR). In this dissertation, a variety of advanced electromagnetic computationaltechniques are integrated to build the simulation model of scattering by buried targets. Basedon the built simulation model, a general, accurate, and efficient FDTD program is developedand numerically investigated for computing scattering by buried objects. Through analyzingthe recent developed parallel technologies in computer science including hardware andsoftware, the difficulties and the key points in parallelization are pointed out for computingscattering by buried targets. A simple and easy parallel approach is presented, implemented,and numerically studied for computing scattering by buried targets. The scatteringcharacteristics by the buried objects are analyzed and discussed by employing the developedparallel FDTD program. Besides, the scattering by anisotropic objects and random surfacesare also studied.