Fig. 1. Compensation system for laser transmission in atmospheric turbulence with active illumination beacon

Fig. 2. Propagation model of illumination beam

Fig. 3. Relationship between actuator of deformable mirror and sub-aperture of wavefront sensor

Fig. 4. Diagram of illuminating beam layout when illuminating beam is flat-topped beam. (a) Four illuminators; (b) nine illuminators

Fig. 5. Influence of laser beam diameter on wavefront sensing performance of active illumination beacon. (a) Four illuminators; (b) nine illuminators

Fig. 6. Height distributions of different roughnesses of target surface. (a) Extreme roughness; (b) strong roughness; (c) medium roughness; (d) weak roughness

Fig. 7. Scattered wave collimated by telescope with nine illuminators. (a) Normalized standard deviation of light intensity; (b) wavefront RMS

Fig. 8. Atmospheric turbulence aberrations detected by active illumination beacon with nine illuminators

Fig. 9. Influence of surface roughness on correction effect of AO system. (a) Four illuminators; (b) nine illuminators

Fig. 10. Difference of Strehl ratios obtained by AO systems with four illuminators and nine illuminators