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针对景象匹配中实时红外基准图获取获取困难、精度受气象条件影响较大等问题,提出了一种关于地面背景表观温度的理论计算模型。确定影响模型精度的主要因素,通过对大量实验数据的比较分析,筛选其中关键数据并对模型主要影响因子的系数进行拟合。以道路、草坪为例进行特性分析和仿真计算对模型进行验证。计算结果表明:该模型可以反映此类背景表观温度的变化情况,实现了快速计算地面背景温度的目的,为实时红外基准图的仿真提供了理论基础和技术途径。
In view of the problem of obtaining and obtaining the real-time infrared reference image in the scene matching and the accuracy being affected greatly by the weather conditions, a theoretical calculation model of the apparent temperature of the ground background is proposed. Determine the main factors that affect the accuracy of the model. Through comparative analysis of a large number of experimental data, select the key data and fit the coefficients of the main influence factors of the model. Taking the road and the lawn for example, the characteristic analysis and the simulation calculation are carried out to validate the model. The calculation results show that the model can reflect the change of apparent temperature of such a background and achieve the purpose of calculating the temperature of the ground background quickly. The theoretical basis and technical approach are provided for the simulation of real-time infrared reference chart.