Chenhao Zhi, Yamin Gao, Yuyan Xiang, Zhi Zhang, Binpeng Shang, Jiewei Guo, Maoqiang Xie, Mingming Liu, Nan Zhang, Lu Sun, Weiwei Liu. Experimental Study of Spectral Processing Technology for Improving Detection Ability of Low-Concentration NaCl Aerosol by Filament-Induced Fluorescence Spectrum[J]. Laser & Optoelectronics Progress, 2023, 60(1): 0101001
- Laser & Optoelectronics Progress
- Vol. 60, Issue 1, 0101001 (2023)
Fig. 1. Schematic diagram of filament-induced fluorescence spectrum (FIFS) collection spectrum device
Fig. 2. Photo of aerosol generator
Fig. 3. Photo of cloud chamber
Fig. 4. FIFS of NaCl aerosol
Fig. 5. Spectra of single preprocessing methods. (a) SG; (b) FFT; (c) SNV; (d) MSC; (e) MF; (f) FD; (g) SD; (h) DWT
Fig. 6. Spectra of 150
Fig. 7. Spectra of 150
Fig. 8. Fitting scatter plots of PLSR prediction value for different preprocessing methods. (a) Original, FFT, SG; (b) MSC, SD, DWT; (c) FFT-SOP, SG-FD, SG-FFT-SD; (d) MF-SG-FFT, MF-SG-FFT-DWT, MF-SG-FFT-SOP; (e) MSC-MF-SG-FFT, MSC-FFT-MF-SG, MSC-MF-SG-FFT-DWT; (f) MSC-MF-SG-FFT-SOP, SNV-SG-FFT-FD, SNV-MF-SG-FFT-DWT
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Table 1. Combinations of spectral preprocessing methods
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Table 2. Peak positions and significance of peak (SOP)
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Table 3. Combinations of preprocessing methods
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Table 4. Prediction results of PLSR models under different preprocessing methods
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