Application of Ray-Tracing Method in Electromagnetic Numerical Simulation Algorithm

Several methods are proposed to accelerate the calculation of RCS (radar cross section), and integrate shooting and bouncing rays-physical optics (SBR-PO) methods into graphics processing unit (GPU). The SBR-PO method is used to solve the multiple reflection behavior of electromagnetic waves on the target model, and the scattered field is calculated by PO integral. The ray tracing engine OptiX and the Unified Computing Architecture (CUDA) are used to reduce the calculation time of the SBR-PO method and improve the calculation efficiency of RCS. Compare the results calculated by the SBR-PO method with the results calculated by the commercial software FEKO. The results fully demonstrate the feasibility and efficiency of integrating the SBR-PO method into OptiX and GPU.