为给空间目标光学探测与识别提供数据支持, 建立了基于TracePro的空间目标光学散射特性计算模型.以空间目标天基红外系统为例, 综合考虑目标的结构特性、材料特性、背景特性及轨道特性, 通过TracePro中建立几何模型、设定材质、设定光源、计算光线路径等环节, 对目标光学散射特性进行仿真分析.结果表明, 目标的光谱辐照度曲线与太阳一致.镜反射时, 目标的等效光谱反射率曲线与砷化镓电池片一致, 随着目标旋转, 目标的等效光谱反射率曲线趋向于与包覆材料一致, 而后保持不变.为空间目标光学散射特性研究思路提供了借鉴.

For supplying space object detection and recognition with reference data,space object optical scattering characteristics model is established using TracePro.Combining with structure,material,background and orbit,the optical scattering characteristics of the space-based infrared system is simulated by creating solid model,defining material,defining light source and tracing rays in TracePro.The simulation results show that the object spectral irradiance is coincident with that of the sun.The object equivalent reflectivity is coincident with that of the GaAs in specular direction.As the object rotates,the object equivalent reflectivity turns to agree with that of the cladding material,and then keeps stable.The research could provide reference idea for the next work.