Fig. 1. Compound axis control optical path diagram used series double tracking mirrors

Fig. 2. Compound axis control

Fig. 3. Compound axis control used single detection

Fig. 4. Control block diagram of fine tracking mirror

Fig. 5. Comparison of characteristics of objects with different attitudes of tracking mirror (without inner ring and with Inner ring). (a) Without inner ring; (b) With inner ring

Fig. 6. High precision TV images in different periods

Fig. 7. Open loop correction characteristics of the same corrector under different hysteresis

Fig. 8. Control block diagram of high precision tracking mirror after introducing relative angle sensor

Fig. 9. Closed loop characteristic diagram of internal position of tracking mirror

Fig. 10. Single detection compound axis control system framework based on position correction

Fig. 11. Optical path diagram of experimental platform

Fig. 12. Compound axis control object used single detection

Fig. 13. Comparison of tracking results under the same lag

Fig. 14. Comparison of hysteresis variation characteristics

Fig. 15. Comparison of tracking results under different delays