Wang Tong, Shi Xueer, Zhao Xin, Song Yansong. Study of Space Four-Quadrant Active Positioning Technology[J]. Chinese Journal of Lasers, 2020, 47(6): 606001
- Chinese Journal of Lasers
- Vol. 47, Issue 6, 606001 (2020)
Fig. 1. Schematic of four-quadrant detector
Fig. 2. Schematic of space four-quadrant active positioning technology
Fig. 3. Space four-quadrant active positioning system (high-speed modulation and demodulation of information)
Fig. 4. Schematic of spot center position detection. (a) Receiver center coincides with space four-quadrant center; (b) receiver center offset relative space four-quadrant center
Fig. 5. Equivalent calculation diagram of Monte Carlo method
Fig. 6. Schematic of center position detection with h<
Fig. 7. Position simulation curves under different scanning spot intervals
Fig. 8. Relative error curves under different scanning spot intervals
Fig. 9. Relative error curves for different spot radii
Fig. 10. Schematic of spot position detection experimental system
Fig. 11. Experimental platform for verifying positioning function of space four-quadrant system
Fig. 12. Schematic of APD defocus
Fig. 13. Detection results of spot position
Fig. 14. Relative error curve of spot position detection
Fig. 15. Transmitter modulation signal
Fig. 16. Communication rate test result chart at receiving end
Fig. 17. Test principle of detection sensitivity of APD receiver
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Table 1. Data table of center position detection of space four-quadrant light spot
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Table 2. Spot results at (0,0) under different intervals
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