实验表明,差分式对比传递函数法调焦,具有调焦精度高,调焦速度快,受像移影响不明显,适应性好等优点。
It shows that the differential focussing method by comparing MTFs has perfect performances high speed, high precision focussing, not being affected by image displacement and flexibility etc.
其次,采用数值计算的方式,分析了输入方波信号与光纤束位相匹配对对比度调制传递函数的影响。
The next, the influence of phase match between input signal and line-array fiber-optic image bundles on the contrast transfer function was analysed digitally.
另外,本文还对荷载传递函数法和弹性理论法在壁板桩中的应用进行了初步对比。
In addition, some comparisons can be made between load transfer method and elastic theory method in this paper.
通过对光纤传像束同像元不同耦合情况的分析,具体推导了不同耦合情况调制传递函数(MTF)的解析表达式,并进行了对比分析。
Different MTF equations are derived from the analyses of different couplings of flexible image bundles and CCD pixels and contrastive analyses are made.
建立了某光电仿真系统的调制传递函数(MTF)评测系统,系统采用频谱对比法测试了仿真系统的MTF。
A system was set up to test the modulation transfer function (MTF) of a photoelectric simulation system. The method used the ratio of magnitude of the output image to the input image.
建立了某光电仿真系统的调制传递函数(MTF)评测系统,系统采用频谱对比法测试了仿真系统的MTF。
A system was set up to test the modulation transfer function (MTF) of a photoelectric simulation system. The method used the ratio of magnitude of the output image to the input image.
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