Fringe order identification in optical fibre white-light interferometry using centroid algorithm method

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作者：
机构：
[1] Chen, S.
[2] Palmer, A.W.
[3] Grattan, K.T.V.
[4] Meggitt, B.T.
来源：
Chen, S. | 1600年 / 28期
关键词：
Computer Programming--Algorithms - Optical Fibers - Signal Processing--Digital Techniques;
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摘要：
A special digital signal processing technique based on a centroid algorithm is presented. It is used to identify the central fringe from the output fringe pattern produced by an optical fibre white-light interferometer system to achieve a large-dynamic-range and absolute phase measurement. A computer simulation and subsequent experimental verification have shown that this technique is capable of sustaining a high operating noise level.
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