Composite Scattering Study of Layered Rough Surface with Target based on CCIA

- In this paper, a fast Cross Coupling iterative Approach (CCIA) is proposed for studying the composite scattering of the layered rough surfaces with buried target, which uses forward backward method (FBM) to solve the electric field integral equations (EFIE) of the layered rough surface and bi-conjugate gradient method (BI-CG) to solve the EFIE of the target, and the interaction between the rough surface and the target is achieved by updating the excitation term. The algorithm is applied to calculate the composite scattering coefficients of the rough surface with a buried target, the results match with those of the traditional numerical algorithm MOM while the error can be reduced to 10-3 by 6 iterations, and the convergence speed and calculation accuracy meet the requirements. The composite scattering coefficients and ered rough surface and dielectric targets with different conditions are calculated, and the effects of various facthe buried targets will have a great influence on the scattering characteristics, weakening or neglecting the coudetecting underground targets.