针对红外成像系统作用距离的评估,从红外目标探测原理出发,阐述了一种基于红外热成像仪NETD参数进行作用距离评估的模型。该模型采用MODTRAN大气模拟软件计算出不同气象条件下的红外传输透过率,实现对红外成像系统作用距离的有效评估。应用实例表明作用距离评估误差小于2 km,说明评估手段有效。

For evaluating infrared imaging system operating range, starting from the principle of infrared detection in this article, an evaluation model based on NETD parameter was proposed and described. The infrared transmission through rate was calculated by using MODTRAN atmospheric simulation software in the model, and the valuation for operating range of infrared imaging systems was implemented successfully. Finally, in some application instances, the error of the evaluation result is less than 2 km and its effectiveness is demostrated.