Radar cross section (RCS) of complex targets can be obtained in real time using the hardware capabilities of a hi¡¡h performance graphic workstation. Target geometry is modelled by a computer-aided des1gn package. First arder contribution to RCS 1s computed under physical optics high-frequency approximation and method of equivalent currents. Radar absorben! coatings are considered trough impedance boundary condition (IBC) and the Fresnel reflection coefficients in the physical optics surface integral. Real time computation is achieved through graphical processing of an image obtained with local illumination modeling of the target.