Xin Liu, Zhenhui Du, Xiaoyu Wang, Liming Yuan, Lu Huang, Yongjian Li. Stand-off detection of ethanol by laser absorption spectrometry with interference-based internal standard[J]. Infrared and Laser Engineering, 2022, 51(12): 20220275
- Infrared and Laser Engineering
- Vol. 51, Issue 12, 20220275 (2022)
Fig. 1. Absorption spectrum of ethanol (Data from PNNL)
Fig. 2. Interference analysis about the absorption of IAO and the components
Fig. 3. Flow chart of data processing
Fig. 4. Schematic diagram of experimental setup
Fig. 5. Physical drawings of the experimental setup
Fig. 6. Signal comparison before and after baseline reconstruction
Fig. 7. Signal comparison of reference path and analysis path
Fig. 8. Ethanol absorption spectrum
Fig. 9. Allan variance
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Table 1. Absorbance deviation of peaks
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Table 2. Measurement results of ethanol standard gas with different concentrations
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