Analyzing the RCS of Biaxial Anisotropic Media

An efficient method for analyzing the electromagnetic(EM) scattering behavior of the biaxial anisotropic media in monostatic radar. The electromagnetic scattering characteristics of the anisotropic media are described in tensor permittivity, which can increase the difficulty of calculation, and reflection coefficient is included in the efficient calculation of radar cross section (RCS). Therefore, the relationship between electric and magnetic fields in anisotropic media is obtained by substituting the tensor permittivity into Maxwell equation. The reflection coefficients are calculated using the spectral domain method (SDM) and the saddle point evaluation (SPE). Then the electromagnetic scattering field is analyzed through the physical optics (PO) method. In order to verify the accuracy and efficiency of the proposed algorithm in this paper, the results of the proposed method are compared with the numerical reference solution in detail.