Study on fully polarimetric three-dimensional microwave imaging

Three-dimensional (3D) microwave imaging can obtain 3D complex scattering information of observed targets, which has broad application prospects in 3D mapping, security detection, biomedical imaging, nondestructive detection, radar target diagnostics, and so on. In this paper, fully polarimetric (FP) data acquisition mode is introduced into the 3D microwave imaging radar. Firstly, the scattering mechanisms, polarimetric target decomposition and synthesis are introduced, and the target characteristics in different polarization channels are analyzed. Secondly, 3D FP data acquisition geometry is established, and data processing flow is proposed. Finally, experiment is implemented and the polarization characteristics of the measured object are analyzed. In this paper, the FP 3D acquisition modes can obtain more abundant target information, and enhance 3D target feature, which has important significance for target detection.