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Using the Method of Moments (MoM)[1] for the scattering by electrically large bodies results in large matrices which dictate excessive computer storage and execution time. The Spatial Decomposition Technique (SDT)[2] was proposed to circumvent high demand on the computer resources and also reduce numerical difficulties. It divides the scatterer into an arbitrary number of N distinct spatial subzones...
This paper investigates the scattering of electromagnetic waves by an object buried in soil. We use the finite difference time domain (FDTD) method to compute the scattered electric fields and power density on the soil surface, in the soil around the object, and in the object We consider a dielectric object, a metallic object, as well as a dielectric object with a thin metallic pin. We determine the...
This paper is concerned with the use of time- and frequency-domain codes for computing the interaction of electromagnetic waves with simple and complex structures. An example chosen for this study is a cubic box with the top open. The Finite Difference Time Domain (FDTD) method is used for computing time-domain responses to an electromagnetic pulse (EMP), a Gaussian pulse, and a sine wave. Frequency-domain...
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