Fig. 1. Schematic of dual grating beam deflection

Fig. 2. Schematic of Euler angular velocity decoupling

Fig. 3. Composition of the dual grating system

Fig. 4. Dual grating control structure

Fig. 5. Dual grating tracking field of view image

Fig. 6. System tracking experiment site long-distance targets and tracking field of view

Fig. 7. Acquisition of attitude data under 5°@0.2 Hz disturbance

Fig. 8. Acquisition of attitude data under 2°@0.5Hz disturbance

Fig. 9. Tracking residual plot at 2°@0.5 Hz perturbation

Fig. 10. Tracking residual plot at 2°@0.5 Hz perturbatio