Scattering from a large uniaxial dielectric sphere

The high frequency backscattering by a large uniaxial dielectric sphere is presented in this paper. Using the modified Watson method we transform the slowly convergent Mie series of the uniaxial dielectric sphere into a rapidly converging contour integral. The Mie series coefficients are then replaced by the geometric optics portion of the generalized Debye series for uniaxial dielectric sphere. With the aid of Debye´s asymptotic formula, the contour integral is simplified and then computed using the saddle point method. A High frequency backscattering formula is proposed and the monostatic radar cross section (RCS) of a large uniaxial dielectric sphere is calculated. The results are compared with those computed using Lorentz-Mie theory.