Electromagnetic scattering from appendages on a smooth surface

A solution is obtained for the high frequency backscattered far field from appendages such as an inlet mounted on arbitrary smooth surfaces. The goal here is twofold; first, to demonstrate the effectiveness of the uniform geometrical theory of diffraction (UTD) in computing the scattered fields from such complex targets, and second, to develop iterative techniques to find multiply diffracted ray paths to be used in the application of UTD. These techniques are applicable to numerically as well as analytically defined surfaces.