Fig. 1. Schematic diagram of four-quadrant detector beam azimuth angle and pitch angle

Fig. 2. Schematic diagram of working principle of four-quadrant detector

Fig. 3. Relationship curves of target pitch angle θ and normalized output energy E_y

Fig. 4. Diagram of relationship between miss distance Δy and loop energy

Fig. 5. GENC operand usage

Fig. 6. Schematic diagram of optical system

Fig. 7. Light spot diagram

Fig. 8. Geometrical loop energy

Fig. 9. Relationship curve of target pitch angle and normalized output energy

Fig. 10. System illuminance curve