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调制传递函数是成像系统性能的重要参数 ,在进行CCD相机调制传递函数测试时 ,通常采用矩形靶标而非正弦靶标 ,使调制传递函数的测试值与相机系统实际调制传递函数值存在差异。本文对CCD相机在系统奈奎斯特频率处的调制传递函数测试结果进行了理论分析
Modulation transfer function is an important parameter of imaging system performance. Usually, rectangular target instead of sinusoidal target is used in CCD camera modulation transfer function test, which makes the difference between the modulation transfer function test value and the actual modulation transfer function value of the camera system. In this paper, the theoretical analysis of the modulation transfer function of the CCD camera at the system Nyquist frequency