波前编码成像由于可以大大扩展非相干成像系统的景深而不降低像质，成为近年来的研究热点。

For its excellent performance on extending the depth of field of the incoherent imaging system, wave-front coding (WFC) has been the research hotspot for many years.

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因此，对于复杂光瞳非相干成像光学系统而言，好的光瞳分布对称性具有更好的空间成像特性。

These results demonstrate that the good symmetry of pupil distribution has a better imaging for the incoherent imaging optical system with a complex pupil.

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本文分析了抽样成像系统的OTF，并讨论了与透镜otf的非相干耦合问题，同时提出了一种新的测量CCD的MTF的方法。

This paper analyses the concept of OTF in sampled imaging system, discusses the problem incoherently coupled with OTF of lens and describes a new method for measuring MTF of CCD.

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