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Special problems in applying the physical optics method for backscatter computations of complicated objects

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3 Author(s)
Klement, D. ; DFVLR Oberpfaffenhofen, West Germany ; Preissner, J. ; Stein, V.

The backscatter computation of complicated objects is carried by the physical optics (PO) method, known as the vector Kirchoff approximation. The object is described by a geometrical model using flat plates (panels). These panels can be nonperfectly conducting and multilayered. The PO solution for the scattering matrix of a single multilayered panel is evaluated in detail using the Fresnel reflection coefficients. An example of the computed reflection coefficient of a two-layered medium is presented. The phase integral of the PO method is solved analytically. The hidden-surface problem is discussed, and the procedure for the treatment of doubly reflecting panels is described. For an ideal conducting cube with additional surfaces that generate shadow and double-reflection effects, the computed radar cross section (RCS) is compared with measurements. Computational results of the RCS for nonperfectly conducting panels are given

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:36 ,  Issue: 2 )

Date of Publication:

Feb 1988

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