Polarization characteristics and controllability mechanism of passive scattering elements  

作　　者：GUO Jie YIN Hongcheng MAN Liang LI Xin 

机构地区：[1]Science and Technology on Electromagnetic Scattering Laboratory,Beijing 100854,China [2]Beijing Institute of Environmental Features,Beijing 100854,China

出　　处：《Journal of Systems Engineering and Electronics》2023年第2期342-349,共8页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(11927803;A020414).

摘　　要：Polarization feature is one of the important features of radar targets,which has been used in many fields.In this paper,the grid models of some typical foreign moving targets are constructed on the simulation platform,such as glider,cruiser,fixed wing aircraft,and rotorcraft.The electromagnetic scattering characteristics of the moving platforms under the incidence of circular polarization waves are calculated.The typical polarization characteristics which the orthogonal and in-phase components have in the echoes are analyzed and proved.Based on the polarization scattering matrix(PSM)theory,from the point of view of the physical reproduction,the technical status quo that the existing technical approaches are difficult to realize the passive simulation of polarization characteristic of the target is summarized.To solve this problem,combined with the vector synthesis law,the realization mechanism of controllable polarization characteristic of target echoes is proposed,the analytical expressions of polarization control matrix and polarization ratio are deduced,and the controllability of polarization ratio feature in the case of circular polarization is verified by simulation calculation.

关 键 词：polarization characteristic physical reproduction passive scattering element controllability mechanism radar feature simulation 

分 类 号：TN957.51[电子电信—信号与信息处理]