ANALYSIS OF SPHERICAL RADAR CROSS-SECTION ENHANCERS

A method for determining the plane wave scattering by a spherical rada r cross section enhancer is described. In the two-step process, the de sired field representation is expressed as a superposition of vector s pherical wave functions. This allows the plane wave scattering from a spherically stratified object to be determined. Love's equivalence pri nciple is then employed to account for the metallic portions of the sp herical reflector. The analysis utilizes the expansions of a plane wav e, an electric current element, and a magnetic current element in term s of spherical wave functions. Measured results show fairly good agree ment with predicted results.