First-order equivalent current and corner diffraction scattering from flat plate structures

Joint Services Electronics Program. Appendix

“…Using E'-Ei onS. (29) primed and unprimed coordinates to denote the source and field point, respectively,…”

“…12. The UTD field of these corner diffracted a previous one which was constructed heuristically [29]. rays illustrated in Fig.…”

“…ck, TThe propagation constants of the modes are found as the roots of the determinant of the impedance matrix given in (29).…”

Composite Electromagnetic Scattering From the Plate Target Above a One-Dimensional Sea Surface: Taking the Diffraction Into Account

“…Ando et al [21][22][23][24] used a new coordinate to novel expressions for not only fringe but also PO and GTD equivalent edge currents without any false singularities. Besides, Sunuhara et al [25] calculated the scattering of polyhedron structures by separated equivalent edge current method based on Sikta et al [26] who used the equivalent current concept to compute the scattering patterns of flat plate structures.…”

Uniform high-frequency description of singly, doubly, and vertex diffracted rays for a plane angular sector

“…The canonical problem of the plane angular sector was solved by Satterwhite and Kouyoumjian [3,4], but the series expansion of the solution is hard to compute and not well-suited for a practical asymptotic evaluation. Most of the literature on this topic presents formulations based on numerical or hybrid techniques [5][6][7] or on approximate, high-frequency methods [8][9][10][11][12][13]. In particular, a heuristic corner diffraction coefficient was conjectured in [8]; however, although it provided surprisingly good results in certain specific examples, its general applicability may be questionable [9].…”