Physical optics approximation of the RCS of an impedance surface

At radar frequencies, asymptotic techniques such as physical optics and the physical diffraction theory can be used for radar cross section prediction of the scattering from a material coated body of arbitrary shape. A physical optics formulation for a wide class of shapes is presented for use with the impedance surface model for lossy materials. Appropriate polarization dependence is incorporated. Both the monostatic and bistatic cases are considered through a uniform treatment of the radiation integrals.<>