Electromagnetic scattering from rough surfaces using the On-Surface Radiation Boundary Condition (OSRC) method
Konidaris, Spyridon G.
Robertson, R. Clark
MetadataShow full item record
Electromagnetic scattering from rough surfaces is of prime importance in the engineering field since it affects communications, radar, remote sensing, acoustics, etc. The actual problem of scattering from rough surfaces is complicated and involves three dimensional scattering from either lossy or dielectric, electrically large surface. Integral equations are widely utilized to solve this kind of problem but this solution to the problem is generally computationally intensive. In the On-Surface Radiation Boundary Condition (OSRC) method, a higher order radiation condition is imposed directly on the surface of the scatterer. This reduces the integral equation for the scattered field to a line integral which can be easily evaluated numerically. In this thesis, the OSRC method is used to formulate the problem of scattering from periodic rough, two dimensional surfaces illuminated by a transverse magnetic, plane electromagnetic wave. Three geometric surfaces are considered. A comparison is made between the present formulation, the exact solution, and the physical optics approximation.
Approved for public release, distribution is unlimited
Showing items related by title, author, creator and subject.
Morgan, M.A.; Chen, C.H.; Hill, S.C.; Barber, P.W. (1984-10);A new formulation is described which combines the most robust attributes of the volume finite element and surface integral equation approaches to electromagnetic boundary value solutions. The result is a numerical technique ...
Decker, Wilson Banks (Monterey, California. Naval Postgraduate School, 1980-12);Backscatter of acoustic signals generated from surfaces having point scattering and line scattering features is studied experimentally in air. Signals are analyzed for propagation over three models: a smooth plane wedge, ...
Wendisch, Manfred; Pilewskie, Peter; Jakel, Evelyn; Schmidt, Sebastian; Pommier, John; Howard, Steve; Jonsson, Haflidi H.; Guan, Hong; Schroder, Marc; Mayer, Bernhard (2005);Airborne measurements of the ratio of spectral upward and downward irradiances (so-called spectral albedo) are used to derive the areal spectral surface albedo in the wavelength range from 330 to 1670 nm. The data were ...