Fig. 1. Adaptive tip-tilt correction system

Fig. 2. Adaptive control block diagram

Fig. 3. Adaptive controller

Fig. 4. Amplitude-frequency characteristic curves of notch filters with different parameters

Fig. 5. Experimental platform diagram

Fig. 6. Disturbance suppression ability curves in three cases

Fig. 7. Frequency identification process

Fig. 8. The estimation error when the disturbance changes continuously

Fig. 9. Time domain and frequency domain diagram of tip-tilt error when disturbance changes continuously

Fig. 10. Tip-tilt error of suppressing multifrequency disturbances. (a) Low-frequency broadband disturbance mixed spike disturbance; (b) Peak disturbance