基于目标任务性能的红外系统评价新方法

分析了美国对红外系统进行评价时的最准确的目标任务性能(TTP)模型。通过阐述TTP建模的理论依据,解释了它相对于Johnson准则的本质区别,主要在于系统阈值对比度概念和对被人眼感知的所有有效频率的积分。介绍了如何将TTP模型过渡到任务性能概率的实验过程,并通过实验数据和TTP的基本理念总结了它相对于Johnson准则的特点。

New metric for evaluating infrared system based on target task performance

A new infrared system evaluation metric,the targeting task performance(TIP),is analyzed that becomes the most accurate target acquisition criteria.Ascribed to the explanation for TIP theoretic evidence,the essential difference from the Johnson criteria is the proposed definition called system contrast threshold function and the integral strategy to all valid fre- quency spectrum perceptive on eye.The experiment procedure of how to transfer the TIP metric to target performance proba- bility is introduced.The predominance of TIP metric,compared with the Johnson criteria,is extracted in terms of the basic modeling principle and the experimental data.