![](/images/graphics-bg.png)
Differential Measurement for Cavity Ring-Down Spectroscopy with Dynamic Allan Variance
Joint Authors
Mo, Zeqiang
Yu, Jin
Wang, Jinduo
He, Jianguo
Dai, Shoujun
Liu, Yang
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-04-14
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
The method of dynamic Allan variance (DAVAR) is used to analyze the time-varying characteristics of a nonstationary signal and is thus incorporated to evaluate the random error in the cavity ring-down spectroscopy (CRDS) experiments.
With the numerical simulation of the influence of instabilities of sudden, slow, or periodic changes on the measurement accuracy in the ring-down process, DAVAR is proved to be an effective way to evaluate random error characteristics in an interfering environment.
In order to minimize influences of time-varying noises in CRDS, a practical differential measurement method is proposed, in which wavelength modulation is applied to detect the ring-down times at the absorption peak and the nonabsorption peak in a time-division manner.
The validity of the differential measurement is proved with its ability to compensate the influence of the environment changes and improves the accuracy from 0.181 ppm to 0.00914 ppm.
The differential measurement method can be used to correct the time-varying error in real time and is helpful to improve the environmental adaptability of the CRDS instrument.
American Psychological Association (APA)
Mo, Zeqiang& Yu, Jin& Wang, Jinduo& He, Jianguo& Dai, Shoujun& Liu, Yang. 2020. Differential Measurement for Cavity Ring-Down Spectroscopy with Dynamic Allan Variance. Journal of Spectroscopy،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1190828
Modern Language Association (MLA)
Mo, Zeqiang…[et al.]. Differential Measurement for Cavity Ring-Down Spectroscopy with Dynamic Allan Variance. Journal of Spectroscopy No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1190828
American Medical Association (AMA)
Mo, Zeqiang& Yu, Jin& Wang, Jinduo& He, Jianguo& Dai, Shoujun& Liu, Yang. Differential Measurement for Cavity Ring-Down Spectroscopy with Dynamic Allan Variance. Journal of Spectroscopy. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1190828
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1190828