Quadratic polar coordinate transform technique for the demodulation of circular carrier interferogram
Quadratic polar coordinate transform technique for the demodulation of circular carrier interferogram
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DOI：
10.1016/j.optcom.2014.09.059
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发表时间：
2015-02
影响因子：
2.4
通讯作者：
Jinpeng Li;Lei Song;Lei Chen;Bo Li;Zhi-gang Han;C. Gu
中科院分区：
文献类型：
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作者：
Jinpeng Li;Lei Song;Lei Chen;Bo Li;Zhi-gang Han;C. Gu
A quadratic polar coordinate transform technique is proposed to improve the demodulation accuracy of the circular carrier interferogram. Through the quadratic coordinate transform, the circular carrier interferogram is converted to the linear carrier interferogram with uniform spatial frequency, whose signal spectrum is significantly separated from the unwanted ones. Thus, the phase under test can be accurately retrieved by the conventional Fourier transform technique. Both the simulant and experimental results demonstrate that the proposed technique can be used for precise demodulation of the phase distribution of a circular carrier interferogram.
