Bistatic RCS prediction with improved PO method for electrically large targets

The bistatic radar cross section (RCS) prediction with improved physical optics(PO) method for electrically large targets combined is presented in this paper. Since the previous high-frequency methods neglet the current impact of shadow zone and lead to the increasing errors of the large angle bistatic calculation, this method is deduced by introducing the current marching technique into the conventional physical optics method. Combined with graphical electromagnetic computing method that extracts the illuminated and shadow facet in accordance with the direction of the incident sort iteration, the bistatic RCS of a conductive target can be exactly calculated. Compared with multilevel fast multipole algorithm and the hybrid method, the numerical results show that this method is efficient and accurate.