Effect of Material on Secondary Scattering of Dihedral Structure

In order to study the light scattering characteristics of complex targets more accurately, it is necessary to take into account the effects of secondary scattering on the overall calculation results. Since the calculation of secondary scattering is very complicated, this paper selects the simplest dihedral structure as the research target. Based on ray tracing method combined with Monte Carlo method, three typical materials including white paint, grass green paint and coated material are selected. Calculate the results of three different materials combination on the two faces of the dihedral structure, and obtain the LRCS single, secondary scattering results in three cases. It is concluded that in the dihedral structure, if one of the faces is a mirror-like material, the effect of the secondary scattering on the whole can be neglected. If it is a dihedral angle composed of a Lambertian surface or a normal rough surface, the effect of secondary scattering on the population cannot be ignored.