Modeling Method for Visible Scattering Properties of Space Target
空间目标可见光散射特性建模方法研究

A modeling method of visible scattering characteristics of space targets was presented.Based on the analysis of background radiation environment of space targets ,a physical model of space targets was established.After the target surface was divided to grids based on the target appearance,Bidirectional Reflection Distribution Function (BRDF) model was used to describe light scattering properties of target surface element according to radiation theory,and a mathematical model on visible scattering properties of the target was built by superimposing all the surface elements scattering components.A body coordinate system was set and the relative positions of the target,the background radiation sources and the detector were determined in terms of coordinate conversion.Visual surfaces of the target to observation system were estiblished by vector coordinate method.Simulation of the target optical characteristics in orbit was achieved according to its given physical dimension and physical parameter.The result shows that the model is valid and it can provide reference data to visible detection and recognition of space targets.