"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki ISSN 1684-1719, N 12, 2019

contents of issue      DOI  10.30898/1684-1719.2019.12.15   full text in Russian (pdf)  

UDC 621.3.095, 537.874

Regularities of bistatic scattering from metal triangle


A. M. Lebedev 1, M. L. Obukhov 2, I. A. Selin 1, T. A. Furmanova 1

Institute for Theoretical and Applied Electromagnetics of the Russian Academy of Sciences, 13 Izhorskaya, Moscow, 125412, Russia

Moscow Institute of Physics and Technology (National Research University), 9 Institutskiy per., Dolgoprudny, Moscow Region, 141701, Russia


The paper is received on November 26, 2019


Abstract.  All maximums of spatial distribution of metal triangle’s bistatic radar cross section are structured into sequences of diffraction cones, each of them having one edge of triangle as an axis. The major cone of the sequence has the highest RCS level, and its cone-satellites’ RCS level reduces in succession. For the cone’s sequences, resulted from primary diffraction by the triangle’s edges, the major cones are the cones of diffracted rays. Maximums of bistatic RCS are observed in direction of the ray, reflected from the triangle, and in shadow direction, - both directions simultaneously belong to all three cones of diffracted rays around the edges of triangle. The scattered field on the cone of diffracted rays is formed as a sum of cophasal contributions from the edge elements. Subsequent cones-satellites are formed as sums of contributions from the edge elements, divided into 3, 5, 7 and so forth Fresnel zones. Surface currents, generated in primary diffraction by the triangle’s edges, run toward the other edges and also form additional sequences of diffraction cones. Besides, sequences of diffraction cones, caused by the edge waves movement in opposite directions along the triangle’s edges, are observed too. Main effects of secondary diffraction result exactly from the surface currents and the edge waves running onto, correspondingly, the edges and the vertices of triangle.

Key words: bistatic radar cross section, diffraction cones, Fresnel zones, primary and secondary diffraction, surface current, edge wave.


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For citation:

Lebedev A.M., Obukhov M.I., Selin I.A., Furmanova T.A.  Regularities of bistatic scattering from metal triangle. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2019. No. 12. Available at http://jre.cplire.ru/jre/dec19/15/text.pdf

DOI  10.30898/1684-1719.2019.12.15