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作为评价红外成像系统性能的重要指标,MTF与MRTD之间存在着相互影响、相互制约的关系。应用红外成像系统理论,从工程实践出发,对以人在回路中方式工作的、前视红外成像系统的MTF与MRTD之间的关系进行了理论分析与计算,得出了在给定系统识别距离、目标特性条件下,两项指标关系的简便计算方法。实验结果表明,利用该计算方法能够较好地预测系统性能,其计算结果可以作为系统总体性能预测的依据。
As an important index to evaluate the performance of infrared imaging system, MTF and MRTD have mutual influence and mutual restriction. Based on the theory of infrared imaging system and the engineering practice, the relationship between MTF and MRTD of forward-looking infrared imaging system working in man-to-loop mode has been theoretically analyzed and calculated. The result shows that in the given system identification distance , The objective characteristics of the conditions, the two indicators of the simple calculation method. The experimental results show that the proposed method can predict the system performance well, and the calculation results can be used as the basis for the overall system performance prediction.