It is known that a change in the direction of an incident wave on a random medium is "remembered" by the angular correlation characteristics of the scattered waves. This "memory effect" is studied for rough-surface scattering by means of theoretical (second-order Kirchhoff approximation (KA)), numerical (Monte Carlo simulations), and experimental (millimeter-wave range) approaches. The second-order KA has been found to be effective for wave scattering from very rough surfaces with large radii of curvature and high slopes (0.5-1.5). Although the second-order KA is based on a number of approximations including the geometrical optics approximation and the approximate forms of the shadowing functions, excellent agreement with Monte Carlo simulations and millimeter-wave experiments was achieved. The results are presented in a form of memory signatures which clearly exhibit the important features of this effect.


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    Title :

    Analytical, experimental, and numerical studies of angular memory signatures of waves scattered from one-dimensional rough surfaces


    Additional title:

    Analytische, experimentelle und numerische Studien der gespeicherten Winkelzeichnung von Wellen die durch eindimensionale, rauhe Oberflächen zerstreut wurden


    Contributors:
    Kuga, Y. (author) / Le, C.T.C. (author) / Ishimaru, A. (author) / Ailes-Sengers, L. (author)

    Published in:

    Publication date :

    1996


    Size :

    8 Seiten, 13 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English