Journal
OPTICS EXPRESS
Volume 25, Issue 20, Pages A896-A905Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.25.00A896
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Funding
- National Natural Foundation of China (NSFC) [11104160]
- Talent introduction foundation of Qufu Normal University, China [608901]
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We propose to use the wavelet transform and Kalman filter methods for processing noise in delta(CO2)-C-13 measurement using laser absorption spectroscopy at 2.008 mu m and they have been shown to be useful tool for reducing the intrinsic noise of the optical system. Through the performance comparison and analysis of these two denoising techniques for the intrinsic noise reduction of optical system, it can be found that the Kalman filter is a more suitable approach for the extraction of gas isotope measurement signal from a contaminated signal. (C) 2017 Optical Society of America
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