Numerical calculation of the RCS of conductive objects covered with time-varying inhomogeneous plasma

The trapezoidal recursive convolution (TRC) finite-difference time-domain method (FDTD) is extended to study the back scattering radar cross sections (RCS) of conductive targets covered with inhomogeneous, time-varying plasma. The two-dimensional TRC-FDTD formulations are derived. Parabolic and Epstein density profiles of plasma are assumed in this letter. The back scattering RCS is calculated under different conditions using a 2-D model for a conductive cylinder covered with plasma. The numerical results illustrate that plasma cloaking system can successfully reduce the back scattering RCS, the plasma stealth is effective, and reasonable selection of different density profile (e.g. parabolic and Epstein density profiles), different parameters of plasma can enhance its effectiveness.