Mathematical Methods and Algorithms for Improving Near-Infrared Tunable Diode-Laser Absorption Spectroscopy

Tianyu Zhang; Jiawen Kang; Dezhuang Meng; Hongwei Wang; Zhengming Mu; Meng Zhou; Xiaotong Zhang; Chen Chen

doi:10.3390/s18124295

Mathematical Methods and Algorithms for Improving Near-Infrared Tunable Diode-Laser Absorption Spectroscopy

Sensors (Basel). 2018 Dec 6;18(12):4295. doi: 10.3390/s18124295.

Authors

Tianyu Zhang¹, Jiawen Kang², Dezhuang Meng³, Hongwei Wang⁴, Zhengming Mu⁵, Meng Zhou⁶, Xiaotong Zhang⁷, Chen Chen⁸

Affiliations

¹ Key Laboratory of Geophysical Exploration Equipment, Ministry of Education, College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China. zty@jlu.edu.cn.
² Key Laboratory of Geophysical Exploration Equipment, Ministry of Education, College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China. kangjw6515@mails.jlu.edu.cn.
³ Key Laboratory of Geophysical Exploration Equipment, Ministry of Education, College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China. mengdz6515@mails.jlu.edu.cn.
⁴ Key Laboratory of Geophysical Exploration Equipment, Ministry of Education, College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China. wanghw6515@mails.jlu.edu.cn.
⁵ Key Laboratory of Geophysical Exploration Equipment, Ministry of Education, College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China. muzm17@mails.jlu.edu.cn.
⁶ Key Laboratory of Geophysical Exploration Equipment, Ministry of Education, College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China. zhoumeng17@mails.jlu.edu.cn.
⁷ Key Laboratory of Geophysical Exploration Equipment, Ministry of Education, College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China. zxt18@mails.jlu.edu.cn.
⁸ Key Laboratory of Geophysical Exploration Equipment, Ministry of Education, College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China. cchen@jlu.edu.cn.

Abstract

Tunable diode laser absorption spectroscopy technology (TDLAS) has been widely applied in gaseous component analysis based on gas molecular absorption spectroscopy. When dealing with molecular absorption signals, the desired signal is usually interfered by various noises from electronic components and optical paths. This paper introduces TDLAS-specific signal processing issues and summarizes effective algorithms so solve these.

Keywords: TDLAS; background correction; denoise; gas sensor; interference fringe; signal processing.

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Review

Abstract

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