Complex source diffraction by wide cones: Exact and complex ray solutions

Complex source diffraction by wide cones: Exact and complex ray solutions

We consider scattering of a scalar complex source beam (CSB) by wide-angle cones. We derive an asymptotic solution that consists of a complex geometrical optics term augmented by complex tip diffraction, expressed as a local spectral integral. The results are compared to the exact solution, expresse...

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Bibliographic Details
Published in:2017 International Conference on Electromagnetics in Advanced Applications (ICEAA) pp. 600 - 603
Main Authors: Katsav, M., Heyman, E., Klinkenbusch, L.
Format: Conference Proceeding
Language:English
Published: IEEE 01-09-2017
Subjects:
Acoustic beams
Diffraction
Geometrical optics
Green's function methods
Harmonic analysis
Optical diffraction
Scattering
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Summary:We consider scattering of a scalar complex source beam (CSB) by wide-angle cones. We derive an asymptotic solution that consists of a complex geometrical optics term augmented by complex tip diffraction, expressed as a local spectral integral. The results are compared to the exact solution, expressed as a complex conical-harmonics expansion. It is shown that unlike the narrow-cone case, considered by us in an earlier publication, scattering by a wide cone is dominated not only by tip diffraction but also by beam reflection expressed by complex rays.
DOI:10.1109/ICEAA.2017.8065317