Electromagnetic scattering calculation of complex structure using iterative physical optics based on curved surface patches

In this paper, the iterative physical optics (IPO) method is generalized from planar to curved surface patches, i.e., the curved iterative physical optics (CIPO) method is developed. The electromagnetic (EM) coupling of thin-layer radome and scatterer under the radome is calculated and analyzed. It is shown that compared with the IPO method on planar triangular patches, for target surface with relatively larger curvature, higher calculation speed and accuracy can be obtained when the CIPO method is adopted.