Hao CHEN, Yu JU, Li HAN, Yang CHANG. Algorithms for Calculating the Concentration of Gas Mixture Containting Different Background Gases in TDLAS Technology[J]. Spectroscopy and Spectral Analysis, 2020, 40(10): 3015
- Spectroscopy and Spectral Analysis
- Vol. 40, Issue 10, 3015 (2020)
Fig. 1. Simulation results of absorption lines in different HWHH of gases with same concentrations
Fig. 2. Flow chart of fitting method based on Levenberg-Marquardt algorithm
Fig. 3. Test system overall structure diagram
Fig. 4. Direct absorption spectra and Lorentz spectra of three background gases
Fig. 5. Relative errors of concentration of peak value, integral and area coefficient algorithm under N2
Fig. 6. Relative errors of concentration of peak value, integral and area coefficient algorithm under Ar
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Table 1. H2O Concentration in three algorithms under background gas of N2
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Table 2. H2O Concentration in three algorithms under background gas of Ar
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