RETRACTED: Comparison and application of wavelet transform and Kalman filtering for denoising in δ 13 CO 2 measurement by tunable diode laser absorption spectroscopy at 2.008 µm

We propose to use the wavelet transform and Kalman filter methods for processing noise in δ 13 CO 2 measurement using laser absorption spectroscopy at 2.008 µm and they have been shown to be useful tool for reducing the intrinsic noise of the optical system. Through the performance comparison and an...

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Bibliographic Details
Published inOptics express Vol. 25; no. 20; p. A896
Main Authors Niu, Ming-sheng, Han, Pei-gao, Song, Lian-ke, Hao, Dian-zhong, Zhang, Jing-hu, Ma, Lili
Format Journal Article
LanguageEnglish
Published 02.10.2017
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Summary:We propose to use the wavelet transform and Kalman filter methods for processing noise in δ 13 CO 2 measurement using laser absorption spectroscopy at 2.008 µm 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.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.25.00A896