Bistatic Scattering by a Triangular Pyramid.

摘要

The problem of scattering by a triangular pyramid is studied using an extension of the geometrical theory of diffraction by the method of moments. Thus, the current distribution on the faces of the perfectly conducting pyramid is found by solving the three dimensional wedge diffraction problem once for each wedge, or a total of six times. This procedure yields the current in the GTD region on each face. The current near the edge of each wedge is then found using the moment method. The currents so obtained do not include that current caused by tip diffraction. The effect of this current on the far zone field may be added post facto using a formula given by Keller, et al. Results are shown for the bistatic radar cross section and in all cases the results are in good agreement with experimental measurements. (Author)