Jiayi Yang, Yongqian Xiong. Gaussian Fitting Algorithm for Spectral Overlapping Peaks and Terahertz Time-Domain Curves[J]. Laser & Optoelectronics Progress, 2021, 58(4): 0407002
- Laser & Optoelectronics Progress
- Vol. 58, Issue 4, 0407002 (2021)
Fig. 1. Flow chart of the iterative calculation
Fig. 2. Curve of the spectral overlapping peaks. (a) Spectral data with noise; (b) spectral data after de-noising; (c) curve with first gradient
Fig. 3. Spectral signal and fitting curve after 10 iterations
Fig. 4. Overlapping Gaussian peaks with unobvious sub-peaks. (a) Spectral signal, fitting curve, decomposition of Gaussian peak; (b) mean square error curve
Fig. 5. THz time-domain curve obtained by fitting. (a) Terahertz signal and fitting curve; (b) variation curve of mean square error
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Table 1. Fitting result of overlapped Gaussian peaks with indistinct peaks
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