Octree based backward SBR-PO method for electromagnetic scattering of electrically large target

The shooting and bouncing ray (SBR) method is highly effective for solving the electromagnetic scattering problems. This paper introduces the octree based SBR-PO method, due to the fact that traditional SBR method is not fast enough for scattering prediction for electrically large target. Using the octree structure to rebuild the target model and process ray tracing based on this technique can obtain great improvement. Simulation results obtained using this method are compared with the results from literature and those generated by commercial software. The good agreement and significant speedup achieved demonstrate that the newly developed code is capable of modeling a very large-size platform for practical rapid design.