May 2021

Article Contents

Chinese Optics> 2021> 14(3): 634-642.

WANG Yu-Zhao, TAO Yu-Liang, SUN Hai-Qing, YANG Chao. Carbon dioxide detection technology based on the laser occultation absorption spectrum[J]. Chinese Optics, 2021, 14(3): 634-642. doi: 10.37188/CO.2020-0201

Citation:

WANG Yu-Zhao, TAO Yu-Liang, SUN Hai-Qing, YANG Chao. Carbon dioxide detection technology based on the laser occultation absorption spectrum[J].Chinese Optics, 2021, 14(3): 634-642.doi:10.37188/CO.2020-0201

Citation:

WANG Yu-Zhao, TAO Yu-Liang, SUN Hai-Qing, YANG Chao. Carbon dioxide detection technology based on the laser occultation absorption spectrum[J].Chinese Optics, 2021, 14(3): 634-642.doi:10.37188/CO.2020-0201

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Carbon dioxide detection technology based on the laser occultation absorption spectrum

doi:10.37188/CO.2020-0201

WANG Yu-Zhao^{1, 2,,},
TAO Yu-Liang^{1, 2},
SUN Hai-Qing^{1, 2},
YANG Chao^{1, 2}

1.
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China
2.
Key Laboratory for Space Laser Information Perception Technology of CAST, Beijing 100094, China

Funds:Supported by Civil Aerospace 13 th Five-Year Pre-research Project (No. D040105)

More Information

Corresponding author:zz0525wyz@163.com
Received Date:28 Dec 2020
Rev Recd Date:08 Jan 2021

Available Online:27 Mar 2021

Publish Date:14 May 2021

Abstract

Abstract

The advantages and disadvantages of fixed-wavelength laser occultation differential absorption technology are analyzed, and the measurement principle of tunable laser direct absorption spectroscopy technology is introduced. The relationship between optimal wavelength transmittance and signal-to-noise ratio and the relationship between measurement error and background light interference are analyzed. According to the working wavelength range of the high-sensitivity detector, 6310.915 cm ⁻¹, 6310.893 cm ⁻¹, 6310.890 cm ⁻¹and 6310.8834 cm ⁻¹are selected as the absorption working wavelengths, and 6310.15 cm ⁻¹is selected as the reference wavelength, and the detection ability of each wavelength is simulated and analyzed. Simulation results show that the detection error of a CO ₂concentration is better than 0.9% in the range of 5~35 km and better than 0.4% in the range of 7~42 km with a vertical resolution of 1 km. This technology reduces the cost and complexity of the system, and is beneficial to the design and implementation of space-borne products.
- laser occultation,
- carbon dioxide,
- direct absorption spectrum

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References (16)

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