| The Uniform Geometrical Theory of Diffraction and the Equivalent Current method are employed for evaluating the Radar Cross Section of complex shapes. In particular, the backscattering of a plane wave from perfectly conductive structures formed of air inlets and plates over an arbitrary smooth surface is considered. Thin-edge and curved rim types of inlets are studied. The inlets and plates or fins connected to the surface can also be of general shape. The solution includes the directly scattered field from each part of the structure as well as that due to the interactions among these parts and the junctions formed by them. Measured patterns are, in addition, provided which are in excellent agreement with the calculated. |
