Efficient GPU implementation of SBR for fast computation of composite scattering from electrically large target over a randomly rough surface

The shooting and bouncing ray (SBR) method is effectively implemented on the graphics processing unit (GPU) for scattering problems of electrically large complex target and randomly rough surface composite model. Results obtained using the proposed approach are compared against results generated by commercial software and those obtained with the CPU-based SBR. The good agreement and significant acceleration show that the newly developed method is capable of modeling the composite scattering from complex and electrically large targets over a randomly rough surface.