Abstract
The formulations for three-dimensional (3D) scattering from uniaxial objects with a smooth boundary using an equivalent source method (ESM) are introduced. The proposed technique uses two sets of sources distributed inside and outside of a scatterer to simulate outside and inside scattered fields, respectively. The uniaxial dyadic Green's functions are deployed in the ESM in order to obtain the scattered fields. A stable solution is achieved by using the proposed multiple-layered distribution scheme of sources. Two numerical examples are present to study bistatic radar cross section (RCS) responses under different scenarios. Excellent agreements are achieved by comparing numerical results with those obtained from commercial software packages, while the CPU time and the required memory are drastically reduced by using the ESM.
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