Xiaoxiao Cheng, Jianguo Liu, Liang Xu, Hanyang Xu, Ling Jin, Xianchun Shen. Off-Axis Simulation and Wavenumber Correction Based on Infrared Solar Occultation Flux Method[J]. Acta Optica Sinica, 2021, 41(10): 1008001
- Acta Optica Sinica
- Vol. 41, Issue 10, 1008001 (2021)
Fig. 1. Structure of the optical path tracking system
Fig. 2. Optical path diagram of the off-axis plane. (a) Schematic diagram of the off-axis beam; (b) magnified schematic diagram of off-axis beam
Fig. 3. Wavenumber shift of the off-axis light spectrum
Fig. 4. Optical path diagram of the SOF system
Fig. 5. Physical diagram of the system
Fig. 6. Position of the interference spot. (a) Normal condition; (b) off-axis condition
Fig. 7. Relative intensity of the interference spot. (a) Normal condition; (b) off-axis condition
Fig. 8. Footprint of the interference spot. (a) Normal condition; (b) off-axis condition
Fig. 9. Change curve of the interference intensity. (a) Static measurement; (b) dynamic measurement
Fig. 10. SNR of the spectrum. (a) Static measurement; (b) dynamic measurement
Fig. 11. Partial image of infrared spectrum. (a) SF6; (b) measured spectrum and H2O
Fig. 12. Wavenumber drifts of the measured spectra of SF6 and H2O. (a) Static measurement; (b) dynamic measurement
Fig. 13. Gas mass concentrations inversion by infrared spectra before and after correction. (a) Static measurement; (b) dynamic measurement
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