Fig. 1. Schematic diagram of electric field time-grating angular displacement sensor

Fig. 2. Time -gating signal processing process

Fig. 3. Phase-shifting diagram of measurement sequence values and error sequence values

Fig. 4. Phase shift curve and average curve

Fig. 5. Average curve and b₀ spectrum analysis value

Fig. 6. Self-calibration experiment platform

Fig. 7. Fourth and fifth phase shift spectrum analysis

Fig. 8. Error of measurement period accuracy

Fig. 9. Residual error in the measurement period

Fig. 10. Error curve comparison and residual error

Fig. 11. Comparison of error curves between autocollimator and self-calibration

Fig. 12. Results of repeated experiments