基于红外成像系统作用距离估算最小可分辨温差（MRTD）方法建立了红外偏振成像系统作用距离模型, 分析了背景杂波影响下红外偏振成像系统作用距离。通过仿真发现, 红外偏振成像系统作用距离是由目标/背景红外偏振特性、大气传输过程和观察方式等众多因素共同决定的, 背景杂乱程度大幅影响红外偏振成像系统作用距离, 偏振成像模式与强度成像模式依据应用条件的不同具有不同的优势。

This paper describes a commonly used target model and two improved models for range performance prediction of infrared imaging system in an original explicit way. We conclude the basic assumptions of each model, define the temperature difference, and give the mathematical equation to calculate the measurement of resolvable target details. The flow path for using the measurement to evaluate the range performance is briefly introduced. The features of these models are compared.