Rui-jin LI, Li-ming ZHANG, Xin LI, Wei WANG, Jia-wei LI, Jun HAO. Specular Normal Calibration Technology of Point Source[J]. Acta Photonica Sinica, 2020, 49(4): 0412002
- Acta Photonica Sinica
- Vol. 49, Issue 4, 0412002 (2020)
Fig. 1. System composition of reflector control
Fig. 2. Mirror reflected light and satellite light path
Fig. 3. Reflector and camera coordinate system diagram
Fig. 4. Algorithm flow of sun image centroid extraction
Fig. 5. Iterative algorithm of effective circular edge detection
Fig. 6. Measure encoder value and corresponding solar position parameters according to time series
Fig. 7. Calculation results of the X , Y , Z axis components of the sun in the reflector coordinate system
Fig. 8. Sun image actually observed by camera
Fig. 9. Results of sun image centroid extraction
Fig. 10. Error distributions of the centroid of the sun image and the calculated values of the model at different times
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Table 1. Partial test data of device when sun observer points to sun
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