Elementary and empirical methods to obtain radar cross section of dihedral and trihedral corner reflectors and some targets by FDA method

Abstract

In this paper, the Radar Cross Section values are computed for arbitrarily shaped targets using the Fast Decomposing Algorithm (FDA) method. Theoretical and empirical formulations are given for the computation of some parts of an aircraft as a sample target. These parts are decomposed into the sections of the recognized RCS values by the FDA method then an entire RCS value will be computed for each part. To obtain an entire RCS value, multiple reflections of among various sections of each part and other sections of the target have been considered. Computational methods for the RCS of dihedral and trihedral corner reflectors are given. Also, a new method in order to obtain the RCS of the various trihedral corner reflectors is given. The entire RCS of a sample Unmanned Aerial Vehicle (UAV) is predicted by the FDA method at 10 GHZ. The predicted data are then compared to the experimental results and some other well-known available methods for the computation of the RCS. The obtained results show good agreement.