The calculation of radar cross sections
Abstract
The FORTRAN program CHAOS, used for calculating cross sections is described including the physical approximations used to simplify Maxwell's equations. The scattering bodies are extended to both open and closed surfaces. The numerical methods used are supplied. The problems of wire junctions, of finite conductivity and the attaching of lumped loads to the structure are considered. Techniques for dealing with bodies having rotational or leftright symmetries are examined as well as the sparse matrix approximation and the complex frequency version of CHAOS. The formula used to calculate the impedance matrix elements, and the conventions adopted concerning coordinate systems and polarization are included.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 April 1980
 Bibcode:
 1980STIN...8110256P
 Keywords:

 Computer Programs;
 Mathematical Models;
 Radar Cross Sections;
 Electrical Impedance;
 Fortran;
 Helmholtz Equations;
 Intersections;
 Maxwell Equation;
 Mesh;
 Polarized Electromagnetic Radiation;
 Wire;
 Communications and Radar