A radon transform interpretation of the physical optics integral

Physical optics (PO) is a well‐known asymptotic technique for evaluating the fields scattered from an object. Evaluation of a surface integral forms the crux of this technique. In this paper, the PO integral is formulated for plane‐wave incidence and far‐field observation. Then, this integral is con...

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Bibliographic Details
Published in:Microwave and optical technology letters 2005-02, Vol.44 (3), p.284-288
Main Authors: Bölükbaş, Deniz, Ergin, A. Arif
Format: Article
Language:English
Subjects:
closed-form
physical optics
radon transform
time-domain
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Summary:Physical optics (PO) is a well‐known asymptotic technique for evaluating the fields scattered from an object. Evaluation of a surface integral forms the crux of this technique. In this paper, the PO integral is formulated for plane‐wave incidence and far‐field observation. Then, this integral is converted to the time domain and interpreted as a Radon transform. When the integration domain is a triangle, this interpretation yields a closed‐form expression that can be employed in both the frequency and time domains. The efficacy of using the derived closed‐form expression in the frequency domain is demonstrated through numerical examples. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 44: 284–288, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20612
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.20612