红外目标的数字建模

Digital Modelling of Infrared Target

为了解决红外目标的数字仿真过程中大气辐射和透射率的计算问题,研究了当前几种仿真工具并将与大气辐射透过率计算软件相结合,并对红外目标的仿真过程做深入研究以提高精度。借助于虚拟纹理映射使由Creator建立的简单几何模型,在Sensor Vision模块中结合预先计算的大气辐射文件和材质属性文件得到目标的红外数字模型,并用MOSART大气工具计算的大气辐射文件及LOWTRAN计算的大气透过率得到优化结果。证明方法对于建立更精细的红外仿真模型和对红外仿真结果很有实用价值。

To resolve the problems of atmospheric attenuation and transmittance computation in the process of in- frared digital simulation, several present simulation tools were studied and combined with atmospheric transmittance compute tools, which would be helpful for improving precision in the infrared digital simulation. With the aid of the texture - mapping tool, the model established by the MuhiGen Creator will be optimized. The model is combined with files computed by MAT or TMM in the Sensor Vision module which creates the target infrared model. Besides, the data in the MAT file is analyzed, as well as transmittance rate computed by LOWTRAN is given . So the method in this article is very meaningful to establish the better infrared simulation model and evaluate the infrared simulation resuit.