Abstract
This paper presents the calculation of the radar cross-section (RCS) of an arbitrary scatterer with a perfect electric conductor by using the incremental theory of diffraction (ITD), a high-frequency technique. The reflected field at the surface of the scatterer is calculated using conventional shooting and bouncing rays (SBR), and the diffracted field at the edge is calculated using the ITD. The proposed method is verified by calculating the monostatic and bistatic RCS of a scatterer composed of two cubes of different sizes and comparing it with the simulation results from CST Microwave Studio. Furthermore, it is demonstrated by calculating the bistatic RCS for a simplified ship that the divergence problem in the physical theory of diffraction can be solved using the proposed method.
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