Target Surface pBRDF Model Optimization and Polarization Characteristics Analysis

Abstract

In this paper, the scattering characteristics of polarized light are studied based on the microsurface element theory, and the Polarization Bi-directional Reflection Distribution Function (pBRDF) model applicable to rough surfaces is established according to the three-component model, and the expression of polarization of reflected light from the target surface is derived based on the model, and the accuracy of the model is verified by comparing the model with the conventional model. The modeling is also carried out from the scattering perspective, and the relationship between different artificial target particle diameters and polarization characteristics is analyzed. The results show that the Degree Of Polarization (DOP) is strongly related to the detection zenith angle. The DOP of the target is largest in the direction of the mirror reflection of the source. The polarization characteristics of different materials are different, and the relative error of the established model is significantly smaller than that of the conventional model. And the scattering model can make preliminary classification of different man-made targets according to different particle diameters, which can provide theoretical support for the analysis of the polarization characteristics of the target surface.

Keywords

• Azimuth angle
• polarization detection
• scattering model
• three-component
• zenith angle