Wei-Xin CUI, Xiang LI, Hao SUN, Zeng-Chuang XU, Yong LI, Yuan-Hang YU. Area array infrared earth sensor heterogeneity non-uniformity correction design[J]. Journal of Infrared and Millimeter Waves, 2021, 40(6): 829
- Journal of Infrared and Millimeter Waves
- Vol. 40, Issue 6, 829 (2021)
Fig. 1. Schematic diagram of attitude sensitivity principle of infrared earth sensor (a) the geometric position relationship between, (b) the principle of attitude sensitivity infrared earth sensor and the earth space
Fig. 2. Schematic diagram of infrared earth sensor optical system
Fig. 3. Modulation transfer function
Fig. 4. Radial energy distribution curve
Fig. 5. Uniformity curve of image surface illuminance
Fig. 6. Working principle diagram of calibration components
Fig. 7. Background images at different temperatures (a) 24.83 ℃，(b) 27.62 ℃，(c) 28.33 ℃，(d) 30.4 ℃
Fig. 8. Corrected images at different temperatures (a) 27.62 ℃, (b) 28.33 ℃, (c) 30.4 ℃
Fig. 9. Image of the on-orbit detector after correction
Fig. 10. Image of the ground detector after correction
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Table 1. Optical system parameters
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Table 2. Non-uniformity of detector image at different temperatures
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Table 3. Non-uniformity of detector image after correction at different temperatures
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Table 4. Non-uniformity contrast between on-orbit image and the groud image
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