RCS simulation of plasma-coated targets modeled by NURBS surfaces

If an aircraft is covered with plasma which is produced by a special method, the incident wave will be refracted and absorbed by plasma. The power of incident wave will decrease. Finally the power of reflected wave and the radar cross section (RCS) of the target will decrease. In this paper, the monostatic RCS of an electrically large target which is modeled by nonuniform rational B-spline (NURBS) surfaces and is covered with nonuniform non-magnetized plasma using physical optics (PO) method is computed. The results show that the RCS of the plasma-coated target is reduced obviously. And the density of electron, the frequency of collision and the thickness of plasma all have an influence on the RCS.