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采样红外成像系统仿真及最小可分辨温差预测方法研究

Keywords: 红外成像系统最小可分辨温差MRTD仿真结果非线性效应噪声特性图像象素样条观察者

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Abstract:

提出一种基于采样红外成像系统仿真图像的最小可分辨温差MTRD预测方法。该方法从红外成像系统信号传递方程出发,模拟生成不同空间频率、辐射温度的标准四周期矩形样条;利用调制传递函数法和象素处理法,仿真了系统各组成模块的几何扭曲、模糊效应、噪声特性和非线性效应;由多名观察者观察样条仿真图像,统计正确判断概率。实现了MRTD的预测.仿真结果表明:该方法预测的MRTD值能够与实际测量的MRTD值有很好的一致性。

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