Gui-hong JIA, Jian-jun ZHANG, Hai-ming ZHENG. Research on FFT+FT Spectrum Zooming Method for Differential Optical Absorption Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2021, 41(7): 2116
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 7, 2116 (2021)
Fig. 1. Spectra and frequency spectra of SO2 gas
(a): Optical density and differential optical density; (b): Frequency spectrum; (c): Drawing of partial enlargement
(a): Optical density and differential optical density; (b): Frequency spectrum; (c): Drawing of partial enlargement
Fig. 2. Spectra and frequency spectra of NO2 gas
(a): Optical density and differential optical density; (b): Frequency spectrum; (c): Drawing of partial enlargement
(a): Optical density and differential optical density; (b): Frequency spectrum; (c): Drawing of partial enlargement
Fig. 3. Schematic diagram of experimental system
Fig. 4. Error comparison of SO2 with same concentration
Fig. 5. Error comparison of NO2 with same concentration
Fig. 6. Error comparison of SO2 and NO2 with different zoom multiple
Fig. 7. Errors of different concentrations SO2 with different zoom multiple
Fig. 8. Error of different concentrations NO2 with different zoom multiple
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Table 1. Measurement results of SO2 with different concentration
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Table 2. Measurement results of NO2 with different concentration
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