CALCULATION OF THE RCS FROM THE INTERACTION OF EDGES AND FACETS

A high frequency method for calculating the contribution to the monost atic RCS due to the interaction between edges and plane facets of a co mplex body is presented. The approach is based on a combination of the Equivalent Currents Method (ECM) and Geometrical Optics (GO). The met hod has been implemented in a general purpose code to calculate the RC S of complex targets represented by an edge-facet model. Ray-tracing c riteria are developed in order to improve the efficiency of the method when complex targets are being analyzed. There is good agreement betw een the present results and those obtained with other methods and from measurements, which demonstrates the accuracy of this method.