Research on High Frequency Electromagnetic Scattering Characteristics of Dielectric-PEC Composite Targets

The prediction of radar characteristics of complex medium targets has become an important research topic in the field of radar target characteristics. In this paper, within the framework of high-frequency method, a set of more perfect research method of electromagnetic scattering characteristics of medium-containing complex targets is established. Firstly, based on the geometrical model and material electromagnetic parameters of the complex electric target with dielectric material, the geometrical and material model partition and description method of the complex electric target with dielectric material are studied. Secondly, a multiple-action illumination surface judgement algorithm for dielectric targets is proposed to obtain the set of single- and multiple-coupled reflected ray paths on the surface, and the set of multiple-coupled transmitted ray paths in the interior formed by transmission on the dielectric surface. Finally, the scattering field of each ray collection is calculated using the physical optics algorithm, and the scattering characteristics of the whole target are obtained by coherent superposition. The effectiveness and accuracy of the PO method and the GO-PO algorithm are verified using several typical models.