2D/3D红外坦克目标仿真对比应用

Contrast on infrared tank simulation software system based on 2D/ 3D

将坦克红外辐射场的分布特性映射为2D和3D两种方式实现:前者将贴图分成若干不同的区域,对这些区域进行材质类的划分,根据这些材质的红外辐射特性进行计算,得到坦克在某一红外波段内的灰度贴图,将这张贴图赋予坦克后反映出正确的坦克红外辐射场的分布;后者根据红外物理学,通过分析影响坦克红外特征的因素,先由数学模型计算出坦克的红外辐射场的分布,再依据计算出的红外辐射场分布完成与模型的临近顶点匹配并进行灰度着色。为了制造更加真实的红外环境,两种方法都使用了同样的大气传输模型和探测器噪声模拟方法。最后,在搭建DMD的闭环回路仿真实验环境下,模拟出了具有各自典型代表意义的红外坦克目标仿真图像。

The distributing characteristic of radiation field was actualized by 2D/ 3D methods.In previous way,the 2D mapping images were classified into several regions and each of the regions reflected one material.Based on the different characteristics of materials,several infrared physics formula were managed to calculate the materials radiant exitance（MRE） in given infrared waveband,then the different MRE were calculated to corresponding gray level.After that,a gray level 2D map was achieved to simulate the radiation field when mapping on tank.In latter way,based on the infrared physics,the factors that affected tank radiation field distributing（TRFD） were analyzed,then TRFD was derived by mathematical model.Adjacent vertex matching was implemented according to the TRFD and then the vertex color was processed.In order to construct a highly precise and equitable infrared environment,both methods adopted the same atmosphere transmission model and detector noise engendered model.Finally,the open-loop experiment with digital micro-mirror device（DMD） was built up to simulate different typical images of tanks.