High-frequency backscattering from a singly curved screen

The backscattering of an arbitrary plane wave from singly curved sheets is considered. An uniform and analytical solution derived from an asymptotic evaluation of the physical optics integral is shown. The solution includes contributions from the straight edges of the screen and is valid on and near the reflection limits. That solution can be combined with the analytical result of the integral of equivalent currents of the physical theory of diffraction (PTD). A graphical comparison of these analytical calculations of the radar cross section (RCS) with other methods and experimental results is presented.