Yin Li, Shoufeng Tong, Lei Zhang, Heng Zhang, Yuxi Cao. Measurement of Changchun Area Using a Broadband Sky Background Light Radiometer[J]. Laser & Optoelectronics Progress, 2024, 61(13): 1301001
- Laser & Optoelectronics Progress
- Vol. 61, Issue 13, 1301001 (2024)
Fig. 1. Background radiometer system structure
Fig. 2. Physical picture of background radiometer
Fig. 3. Operating principle of background radiometer
Fig. 4. Radiance receiving unit
Fig. 5. Schematic diagram of four quadrant detector imaging
Fig. 6. Signal collection process of spectrometer
Fig. 7. Schematic diagram of background radiometer calibration. (a) Calibrate the spectral radiometer; (b) transfer to the integrating sphere and calibrate the background radiometer
Fig. 8. Calibration curves of three spectrometers. (a) Visible near-infrared fiber spectrometer; (b) short wave infrared fiber spectrometer 1; (c) short wave infrared fiber spectrometer 2
Fig. 9. Inversion results of three spectrometers. (a) Visible near-infrared fiber spectrometer; (b) short wave infrared fiber spectrometer 1; (c) short wave infrared fiber spectrometer 2
Fig. 10. Full sky scanning results at different times on February 25th. (a) 11:00; (b) 11:30; (c) 12:20
Fig. 11. Fixed point observation data. (a) March 4th, sunny to cloudy; (b) March 6th, sunny; (c) March 8th, sunny
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Table 1. Detailed specifications of spectrometer
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