Wen-Long FAN, Xiao-Xian HUANG, Yu-Tian FU. Analysis of radiation reference anomaly of HY-1B COCTS and research on the repair algorithm[J]. Journal of Infrared and Millimeter Waves, 2022, 41(1): 2021106
- Journal of Infrared and Millimeter Waves
- Vol. 41, Issue 1, 2021106 (2022)
Fig. 1. Imaging diagram of COCTS
Fig. 2. Scanning period of COCTS
Fig. 3. Cold space signal in sunshine area
Fig. 4. Cold space signal of different frame
Fig. 5. Blackbody signal in sunshine area
Fig. 6. Schematic of the experiment
Fig. 7. Blackbody signal
Fig. 8. Cold space signal
Fig. 9. Integrating sphere signal
Fig. 10. The influence of multi-layer dressings
Fig. 11. The influence on HY-1B COCTS of the sun glitter
Fig. 12. Diagram of the glitter influence
Fig. 13. The relationship between the glitter energy and zenith angle for HY-1C COCTS
Fig. 14. The theoretical output code of CH41A of HY-1B COCTS
Fig. 15. The actual output code of CH41A of HY-1B COCTS
Fig. 16. Code correction quantity
Fig. 17. Image curve before and after correction（No.1164 pixel）（a）channel 1~4,（b）channel 5~8
Fig. 18. Image curve before and after correction（No.1840 frame）（a）channel 1~4，（b）channel 5~8
Fig. 19. Image correction（a）image before correction,（b）image after correction
Fig. 20. Image correction of the Bohai Sea and the Yellow Sea area（a）image before correction，（b）image after correction
Fig. 21. Image code distribution（a）channel 1~4,（b）channel 5~8
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Table 1. Main performance of COCTS and MODIS
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Table 2. VNIR spectral range of COCTS
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Table 3. Energy level of integrating sphere
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Table 4. System response coefficient of HY-1B COCTS
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Table 5. Regression coefficient of the glitter of HY-1C COCTS
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Table 6. 1st pixel’s repair coefficient of 8 channels of HY-1B COCTS
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