Scattering of arbitrary direction Gaussian Beam from bisphere

Based on the local approximate form of the beam shape coefficients and the coordinate rotary theory of the vector sphere wave functions, the expansion form of the field of the Gaussian beam in terms of the vector sphere wave functions at arbitrary coordinate system is obtained. The scattering of arbitrary direction Gaussian Beam from bisphere is investigated according to generation Mie theory (GMM). Numerical results on the radar cross section and its change characteristic at different incident angle are analyzed. Some results are compared with the result gained by business software CST.