Windowed Fourier transform method for demodulation of carrier fringes

Qian Kemao

doi:10.1117/1.1759333

1 July 2004 Windowed Fourier transform method for demodulation of carrier fringes

Qian Kemao

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Optical Engineering, Vol. 43, Issue 7, (July 2004). https://doi.org/10.1117/1.1759333

Abstract

The Fourier transform method for demodulation of carrier fringes has been extensively developed and widely used in optical metrology. However, the Fourier transform being a global operation, it has poor ability to localize the signal properties and hence the result of FTM is not ideal. A windowed Fourier transform method is thus proposed, with advantages of signal localization and noise filtering. An example demonstrates the improved result compared to the traditional Fourier transform.

©(2004) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Qian Kemao "Windowed Fourier transform method for demodulation of carrier fringes," Optical Engineering 43(7), (1 July 2004). https://doi.org/10.1117/1.1759333

Published: 1 July 2004

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