SHAPE DEPENDENCE OF THE SCATTERED ELECTROMAGNETIC FIELD OF SPHEROIDAL REAL SCATTERERS

摘要

In the present paper the approach to investigate the shape dependence of a real axissymetric scatterer and especially a spheroid, with relation to its scattered electromagnetic field is continued For this investigation a spheroid has been selected with varying ratio of its dimensions The first approach, in the first of this series' papers, has been based on the principle of maintaining the scatterer's area constant while changing its shape from oblate to spherical and then to prolate, allowing the geometric cross section on the plane of the incident electromagnetic wave to vary in order to maintain the total surface area constant For this attempt, the geometric cross section on the horizontal (x-y) plane, assuming incidence of the electromagnetic plane wave towards the -z axis, is kept constant while the length of the semi-axis on the direction of the incident plane wave is changing resulting to change of the size of the spheroid and consequently to its total surface area. For this purpose, two different kinds of real scatterers are modeled, an aluminum and a fiberglass spheroids, and the Method of Moments with the use of FEKO is applied and the results of the Bistatic Radar Cross Section computations are analyzed and presented.