Journal of Applied Optics, Volume. 46, Issue 3, 670(2025)
Calibration system for solar spectrograph radiance response
Figures & Tables(7)
Fig. 1. Partial band spectral response function obtained by direct measurement
Fig. 2. Schematic diagram of composition of solar radiance hyperspectral responsivity calibration system
Table 1. Deviation comparison of irradiance calibration
View tableView in ArticleTable 1. Deviation comparison of irradiance calibration
Type Difference value Maximum irradiance 0.175 8 W/mm2 Average irradiance 0.135 2 W/mm2 Standard deviation −0.093 0 Average deviation −0.009 5 Distribution position and extension width X: −0.036 0 μm σ: 0.032 4 mm Y: −0.012 1 μm σ: 0.032 3 mm
Table 2. Uncertainty calculation
View tableView in ArticleTable 2. Uncertainty calculation
Component of uncertainty(k=2) Contributions/% Uncertainty of radiance of integrating sphere Diffuse reflection plate 1.50 Transmit standard radiometer error 1.12 Geometric error 0.50 Integral sphere error 2.58 Transfer light error 1.60 The instrument uncertainty Instrumental repeatability 1.00 Wavelength repeatability and accuracy 0.80 Stray light 1.00 Non-linearity 1.50 Filter measurement uncertainty Accuracy of photometer measurement 1.50 Accuracy of filter wavelength 1.00 Expanded uncertainty(k=2) 4.60
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Jianwen ZHANG, Weijie DENG, Bo LI, Heng WU, Guanyu LIN. Calibration system for solar spectrograph radiance response[J]. Journal of Applied Optics, 2025, 46(3): 670
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Received: Dec. 23, 2024
Accepted: --
Published Online: May. 28, 2025
The Author Email: Bo LI (李博)
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