High-frequency backscatter from a finned cylinder -- Comparison of UTD results with experiment

The far backscattered field from a perfectly conducting, infinitely long, circular cylinder with a fin is calculated for the transverse electric (TE) and transverse magnetic (TM) cases, using the uniform theory of diffraction (UTD). The calculated results are compared to appropriate experimental measurements and good agreement is obtained. A derivation of the effective curvature of the wave diffracted by the edge of the fin and propagating along the fin to the cylinder is presented. A limitation on the method of effective source is discussed.