【摘要】 根据对比度传递函数的定义,推导出线列光纤传像束对比度调制传递函数的表达式,采用数值计算的方式,仿真分析了线列光纤传像束的对比度调制传递函数。仿真结果表明,输入信号与光纤束位相匹配对对比度调制传递函数结果有一定的影响,对比度调制传递函数值随位相呈周期性变化。在输入的空间频率小于Nyquist频率时,对比度调制传递函数值随频率的增大而减小。更多还原

【Abstract】 With the definition of the contrast transfer function(CTF),CTF expression of line-array fiber-optic image bundles is established,the influence of phase matching between input signal and line-array fiber-optic image bundles on the contrast transfer function is carried out by digital analysis.The results show that alignment between pixels of image bundle and input pattern has cyclic variation on measure result of the CTF.When frequency of the input pattern is less than Nyquist frequency,the CTF value decreases with increase of the frequency.更多还原