Radar Cross Section from the Characteristic Basic Function Method combined with the Physical Optics to accelerate the EFIE solver
Résumé
From the electric field integral equation (EFIE),
discretized by the Rao-Wilton-Glisson Galerkin Method of
Moments (MoM), a linear system must be solved. The
characteristic basic function method (CBFM) has proved its
efficiency to solve the matrix equation for radiation and
scattering problems. This approach decomposes the object into
sub-domains and its first stage consists in calculating the
associated primary basis functions (PBFs). In order to
accelerate this step, the physical optics approximation is derived
from EFIE. For a perfectly-conducting object of different
shapes, the radar cross section (RCS) is compared with that
obtained from a brute-force MoM to show the efficiency and
accuracy of CFBM-PO.