Abstract
Parabolic equation techniques for scattering are outlined for both acoustic and electromagnetic waves. Angular limitations are overcome by rotating the paraxial direction and solving for scattered fields that are accurate in sectors centered about the paraxial direction. These fields are then combined to obtain a scattered field that is accurate in all directions. This approach is efficient for bistatic scattering by objects that can be large compared to the wavelength. Parabolic equation techniques are applied to electromagnetic scattering by a finitely conducting sphere and a large idealised aircraft shape and to acoustic scattering in the presence of an interface.
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