A Novel UTD-Type Diffraction Coefficient for a Straight Edge in a Curved Screen

A novel uniform theory of diffraction (UTD)-type diffraction coefficient for a straight edge in a cylindrically curved screen valid for both convex and concave side wave incidence is obtained via uniform asymptotic theory of diffraction (UAT) formulations. The proposed curved screen UTD-type coefficient (CSUTD) allows uniform description of the fields at all aspect angles including the grazing incidence case, where UTD coefficient-based predictions deviate sharply from available measurements, when it is applied to the problem of monostatic radar cross section (RCS) of cylindrically curved plate.