Cataloged from PDF version of article.Calculation of Radar Cross Section (RCS) of arbitrary bodies using Physical
Optics (PO) Theory and Physical Theory of Diffraction (PTD)is considered. For
bodies with impedance surface boundary condition, only PO is used. Analytical
approach to PO integral is used to achieve faster computations. A computer
program has been developed in Fortran in order to calculate the Radar Cross
Section (RCS). Arbitrary shape is modeled as triangular facets of any area by
the help of graphical tools. Given the triangular meshed model of an arbitrary
body, Physical Optics(PO) surface integral is numerically evaluated over the
whole surface. There is no limitation on the size of the triangles, as soon as the
total surface does not retire from the original one.
Shadowing algorithm has been used in order to have more accurate solutions.
Additionally, flash points of PO are visualized over the surface of targets, hence
local nature of high-frequency phenomena is proved.
Induced surface currents, edge currents and RCS have been calculated for
some basic shapes and the fuel tank model of F-16 airplanes. Induced surface currents have been visualized over the surface of the particular targets using
Matlab.Albayrak, N AslıhanM.S
