Asymptotic expressions for the fields scattered by an isotropic impedance wedge at skew incidence are derived in the frame of the uniform geometrical theory of diffraction （UTD）. They are obtained by approximately s...Asymptotic expressions for the fields scattered by an isotropic impedance wedge at skew incidence are derived in the frame of the uniform geometrical theory of diffraction （UTD）. They are obtained by approximately solving the difference equations generated from impedance boundary con ditions （IBCs） in Maliuzhinets＇ approach. The method overcomes the discontinuity of the nonuniform evaluation given in the literature referred and can give out satisfactory numerical results.展开更多
A concise formulation of the uniform geometrical theory of diffraction (UTD) solution for the scattering by a wedge with isotropic impedance faces at a plane wave normally incident case is deduced in this paper, which...A concise formulation of the uniform geometrical theory of diffraction (UTD) solution for the scattering by a wedge with isotropic impedance faces at a plane wave normally incident case is deduced in this paper, which inherits the uniformity of the original result. It overcomes the complexity of the former, expresses clearly physical meanings, and is very prone to calculation with computer. The numerical results agree well with those given by published papers. Key words electromagnetic scattering - impedance wedge - diffraction - UTD CLC number TN 821 Foundation item: Supported by the National Natural Science Foundation of China (50099620)Biography: YUAN Fei(1979-), male, Ph. D candidate, research direction: electromagnetic scattering.展开更多
文摘Asymptotic expressions for the fields scattered by an isotropic impedance wedge at skew incidence are derived in the frame of the uniform geometrical theory of diffraction （UTD）. They are obtained by approximately solving the difference equations generated from impedance boundary con ditions （IBCs） in Maliuzhinets＇ approach. The method overcomes the discontinuity of the nonuniform evaluation given in the literature referred and can give out satisfactory numerical results.
文摘A concise formulation of the uniform geometrical theory of diffraction (UTD) solution for the scattering by a wedge with isotropic impedance faces at a plane wave normally incident case is deduced in this paper, which inherits the uniformity of the original result. It overcomes the complexity of the former, expresses clearly physical meanings, and is very prone to calculation with computer. The numerical results agree well with those given by published papers. Key words electromagnetic scattering - impedance wedge - diffraction - UTD CLC number TN 821 Foundation item: Supported by the National Natural Science Foundation of China (50099620)Biography: YUAN Fei(1979-), male, Ph. D candidate, research direction: electromagnetic scattering.
