A novel method for quickly and accurately predicting the scattering response of coated target

A novel method for efficiently and accurately predicting the scattering response of coated targets is proposed. By using the scattering center model based on the geometrical theory of diffraction (GTD) as the transfer function, the scattering characteristics of coated targets could be predicted from those of PEC targets. First, a scattering center parameters extraction algorithm based on particle swarm optimization (PSO) is designed to obtain the scattering characteristics of PEC targets. Then, the reflection coefficient is calculated based on the electromagnetic parameters and thickness of the material, and the scattering response of coated targets is predicted by combining it with the scattering center model. Through analysis, the mean absolute error (MAE) of the proposed method for cube and the Slicy targets is 1.96% and 4.1% respectively. Furthermore, the proposed method saves 90% to 98% of the simulation time compared to the calculation time of commercial solver. The results demonstrate that the proposed method effectively enables accurate and rapid prediction of the scattering response of coated targets.