临近空间目标光谱特性建模及仿真

摘要

针对临近空间飞行器提出了一种建立目标光谱特性模型的实用方法。通过对目标进行几何建模，提取面元参数；采用建立面元坐标系的方法计算各面元的方位坐标参数；基于电磁理论，分别采用 Davies 模型和 Planck 黑体辐射公式分析了目标面元的散射和辐射特性，从而建立了目标在可见光和近红外谱段的光谱特性模型。研究结果表明，该方法具有较好的有效性和适用性，其结论能够为观测谱段的选择提供数据支持。%The paper proposes the applicable modeling method of the spectral characteristics of the target for the near space aerocraft.The parameters of the target facet have been obtained when the target form had been modeling.The parameters of the azimuthal coordinate have been obtained by building the coordinate system of the target facet.Based on the theory of electromagnetism,the char-acteristics of scattering and radiate of the target facet have been calculated by the Davies model and the Planck formula of blackbody radiation.Furthermore,the models of the spectral characteristics of the visible light and near infrared have been built.According to the analysis of the simulation result,the effectiveness and applicability of the method have been verified,and the result also can offer the data for choosing the best spectral in observation.