Acta Photonica Sinica, Volume. 44, Issue 11, 1112004(2015)
Fourier Transform Method for Interferogram Analysis with High Accuracy
A method for estimating spatial carrier frequencies in the interferogram analysis using Fourier transform was presented. By multiplying the original interferogram with a 2D window function and calculating the centroid coordinates of the sidelobe of the apodized interferogram,the spatial carrier frequencies was estimated with high accuracy. Based on the Fourier shift theorem,the carrier removal was realized with the estimated spatial carrier frequencies. The simulation and experiment results show that the method can suppress the carrier removal error as well as the spectrum leakage error effectively.
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SU Yin, FAN Qi, WANG Yun-fei, YANG Hong-ru, LI Gao-ping, ZHU Chun-chang, ZHU Shi-jian, WU Bo-rui. Fourier Transform Method for Interferogram Analysis with High Accuracy[J]. Acta Photonica Sinica, 2015, 44(11): 1112004
Received: Apr. 27, 2015
Accepted: --
Published Online: Dec. 18, 2015
The Author Email: Yin SU (uzsyw@126.com)