Jingtao HUANG, Xiaodong WANG, Zhenya SUN, Dali ZHOU, Pengji ZHOU. Design of auto-exposure imaging circuit under complex illuminance of Mars in Tianwen-1 high-resolution camera[J]. Optics and Precision Engineering, 2022, 30(2): 191
- Optics and Precision Engineering
- Vol. 30, Issue 2, 191 (2022)
Fig. 1. Block diagram of imaging circuit
Fig. 2. TDI CCD real figure
Fig. 3. Framework of TID CCD
Fig. 4. Pre-magnification circuit of the CCD
Fig. 5. Auto-exposure test in laboratory
Fig. 6. Image before and after auto-exposure
Fig. 7. MTF test image before auto-exposure
Fig. 8. MTF test image after auto-exposure
Fig. 9. Actual scene image before auto-exposure
Fig. 10. Actual scene image after auto-exposure
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Table 1. Main technical indicators of TDI CCD
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Table 2. Main technical indicators of CMOS
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Table 3. MTF corresponding to each integral series
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Table 4. MTF value comparison before and after adaptive automatic exposure
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