Hong-sheng SUN, Xin-gang LIANG, Wei-gang MA, Jing GUO, Jia-peng WANG, Chao QIU, Xiao-gang SUN. Retrieval of High-Temperature Field Under Strong Diffusive Mist Medium via Multi-Spectral Infrared Imaging[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2702
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 9, 2702 (2022)
Fig. 1. Infrared spectral characteristics of mist particles at typical particle diameters
Fig. 2. Extinction coefficient of mist particles varying with wavelength and particle diameters
Fig. 3. Direct spectral transmittance of mist field under different mist particle diameters
Fig. 4. Schematic presentation of the three-channel infrared temperature retrieval system
Fig. 5. Schematic presentation of the three channels of the infrared temperature retrieval system
Fig. 6. Calibration curves of the three-channel infrared temperature retrieval system
Fig. 7. Schematic illustration of the near-field radiative transfer model of the high-temperature target under diffusive mist condition
Fig. 8. Calculation process of the retrieval coefficient using statistical regression method
Fig. 9. Image of the experimental verification device of the temperature retrieval system
Fig. 10. Visible and mid-wave infrared images of the high-temperature targets before (a) and after (b, c) the appearance of diffusive mist field
Fig. 11. Infrared images at three designed channels before (a) and after (b) the appearance of diffusive mist field
Fig. 12. The brightness temperature data of the high-temperature blackbody under random mist conditions
Fig. 13. The corresponding retrieved temperature data of the high-temperature blackbody (a) and the high-temperature graybody (b) under random mist conditions
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Table 1. Main parameter list of the infrared temperature retrieval system
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