Baseline Fitting of Partial Least Squares for Oxygen A Absorption Band

Table 1. Mean residual before and after eliminating singular points
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Table 1. Mean residual before and after eliminating singular points
Before After
Mean residual 1.68×10^-4 -1.16×10^-4

Table 2. Baseline fitting parameters of oxygen A-band at 46.4 m
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Table 2. Baseline fitting parameters of oxygen A-band at 46.4 m
Resolution /cm^-1 Standard deviation $\begin{matrix} σ_{\overset{̅}{A}} \end{matrix}$ /% Signal-to-noise ratio /dB
1 0.3 476.3
2 0.23 627.5
4 0.23 633.8
8 0.23 635.9
16 0.19 796.1
32 0.2 817.3

Table 3. [in Chinese]

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Table 3. [in Chinese]

Distance /m	1 cm^-1	2 cm^-1	4 cm^-1	8 cm^-1	16 cm^-1	32 cm^-1
12	0.30	0.23	0.19	0.19	0.17	0.16
26	0.28	0.20	0.20	0.17	0.17	0.16
35	0.27	0.23	0.13	0.14	0.08	0.13
46	0.30	0.23	0.23	0.23	0.19	0.20
55	0.29	0.23	0.20	0.18	0.16	0.21
60	0.32	0.29	0.23	0.24	0.22	0.24
62	0.33	0.25	0.21	0.26	0.22	0.25
64	0.41	0.31	0.24	0.16	0.16	0.22
128	1.06	0.70	0.54	0.33	0.28	0.07
Average uncertainty	0.40	0.30	0.24	0.21	0.18	0.18

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Li Jinhua, Zhang Minjuan, Zhang Delong. Baseline Fitting of Partial Least Squares for Oxygen A Absorption Band[J]. Chinese Journal of Lasers, 2017, 44(8): 811001

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