Electromagnetic Scattering from Dielectric Bodies of Revolution: Theoretical and Experimental Results

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Abstract
The scattering of electromagnetic waves from axisymmetric bodies of lossy dielectric in the resonance region is considered. A theoretical formulation to the problem is used in terms of equivalent currents on the surface of the scatterer, leading to a set of surface integral equations which are solved numerically using the method of moments. The excitation is considered to be a circularly polarized plane wave at oblique incidence. Various sizes and shapes are considered which simulate ice, and for which experimental results of the backscattering matrix elements are available. The measurements and the computations are carried out at two different frequencies, 2.86 GHz and 9.6 GHz. Very good agreement between the numerical results and the experimental data is obtained for the backscattering direction. The numerical results of the forward scattering are also calculated and presented.