Convergence and accuracy of near-field-corrected iterative physical optics for scattering by imperfectly conducting and dielectric objects

• Published in: IET microwaves, antennas & propagation Vol. 14; no. 10; pp. 999 - 1005
• Main Authors: Rim, Jae-Won, Koh, Il-Suek
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 12.08.2020
• Subjects: complex impedance surface bodies; conducting objects; convergence behaviour; dielectric objects; electromagnetic wave scattering; fixed wing aircraft; full‐wave method; iterative methods; iterative physical optics; near‐field correction effect; physical optics; radomes; Research Article; RF characteristics; rotatory wing aircraft; Von‐Karman radome; wave penetration application; radomes; iterative methods; full-wave method; complex impedance surface bodies; iterative physical optics; conducting objects; physical optics; rotatory wing aircraft; dielectric objects; electromagnetic wave scattering; RF characteristics; wave penetration application; Von-Karman radome; near-field correction effect; convergence behaviour; fixed wing aircraft
• ISSN: 1751-8725; 1751-8733; 1751-8733
• DOI: 10.1049/iet-map.2019.0871

This communication investigates the convergence behaviour and accuracy of a near-field corrected iterative physical optics scheme for scatterings by imperfectly conducting and dielectric objects. The scatterings by large and complex impedance surface bodies such as fixed wing aircraft, rotatory wing aircraft, tank, vessel, and boat are computed and compared with those of a full-wave method. Several RF characteristics of a Von-Karman radome are also analysed and compared as a wave penetration application. Based on these comparisons, the near-field correction effect is examined on the accuracy of the iterative physical optics scheme.