Spectroscopy and Spectral Analysis, Volume. 41, Issue 2, 408(2021)
Research on Correction Method of Background Signal Drift in Mid-Infrared Harmonic Detection
Fig. 1. Flow chart of background signal drift correction algorithm
Fig. 3. Absorption line strengths and absorbances of NO, H2O and CO2 with wavenumber from 1 927 to 1 932 cm-1 in HITRAN database
Fig. 5. Measured data dots and linear fitting of NO concentration and (Average Vpp)2
Fig. 6. The drift of the sampling point position of absorption peak
Fig. 7. The 2
Fig. 8. The relationship between SNR and the moving sampling point of 2
Fig. 9. NO concentration obtained by continuous measurement before and after background signal drift correction
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Li-chang ZOU, Jun HUANG, Zheng-hui LI, Yao DENG, Guo-dong SHAO, Zhen RUAN, Zhi-min LU, Shun-chun YAO. Research on Correction Method of Background Signal Drift in Mid-Infrared Harmonic Detection[J]. Spectroscopy and Spectral Analysis, 2021, 41(2): 408
Category: Research Articles
Received: Jan. 5, 2020
Accepted: Apr. 19, 2020
Published Online: Apr. 8, 2021
The Author Email: Li-chang ZOU (1549420845@qq.com)