May 2014
Intermediate
496 pages
12h 21m
English
Content preview from Fundamentals of the Physical Theory of Diffraction, 2nd Edition
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7 Elementary Acoustic and Electromagnetic Edge Waves
This chapter is based on papers by Butorin and Ufimtsev (1986), Butorin et al. (1987), and Ufimtsev (1989, 1991, 2006a,b).
In previous sections it was demonstrated that edge-diffracted waves provide a significant contribution to a scattered field. By themselves these waves represent the linear superposition of EEWs generated in a certain vicinity of infinitesimal elements of the scattering edge; that is,
Here L denotes the edge of the scattering object and ζ is the curvilinear coordinate measured along the edge and associated with its length (dζ = dl). It is supposed that the curvature radius of the edge L is large in terms of the wavelength and that it can change slowly along the edge. The angle between faces of the edge can also change along the edge. The integrand du(ζ) stands for the ...
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