Radar Cross Section Analysis of Small Group Target

The radar cross section (RCS) of a group target, composed of multiple scatterer elements, can be found approximately through array composition of the RCS of each element. In order to verify the validity of the pertinent method, this paper compares results obtained through array composition and numerical calculation for RCS in the case where an aircraft scatterers model constitute a small group target. In addition, the relationship is examined between the spacing of elements composing the group target, and coupling between elements. The results showed that coupling decreased with increasing element spacing, and if the element spacing is sufficiently large, RCS of the entire group target can be found with good precision through array composition.