Fig. 1. Workflow of star sensor

Fig. 2. Simulation star point

Fig. 3. Star centroid extraction process

Fig. 4. Algorithm block diagram

Fig. 5. Star point area and correction matrix diagram

Fig. 6. Schematic diagram of star centroid moving in continuous frame of image at low speed

Fig. 7. The process of obtaining correction matrix C at low speed

Fig. 8. Schematic diagram of star centroid moving in continuous frame of image at high speed

Fig. 9. Correction results using different methods at different angular velocities

Fig. 10. The 3D map of star point at different angular velocities

Fig. 11. Correction results using different methods at different angular velocities

Fig. 12. Centroid error of star before and after correction under different noise intensity

Fig. 13. The 3D map of star point under different noise intensity