Fig. 1. Photon return efficiency of TIPC laser varies with power intensity

Fig. 2. Schematic of the laser propagation in the turbulence with angular spectrum propagation

Fig. 3. The phase distortion of the four turbulence slabs

Fig. 4. The power density distribution at the second， third and forth slab

Fig. 5. The spot profile of the sodium beacon

Fig. 6. The scatter diagrams for the size of beacon of 250 frames with different values of r₀

Fig. 7. The box-plot of the sodium beacon spot size in x and y direction with different values of r₀

Fig. 8. The photon return with different values of r₀

Fig. 9. The box-plot of photon return with different values of r₀

Fig. 10. The spot profile of sodium beacon from the second slab to the sodium layer

Fig. 11. The box-plot of the spot size in x and y direction for sodium beacon under different values of r₀， the atmosphere was discreated into 6 layers

Fig. 12. The box-plot of photon return with different values of r₀， while the atmosphere was discreated into 6 layers

Fig. 13. The footprint of the uplink laser centroid in each layer

Fig. 14. The centroid of the sodium beacon spot distribution with 4 and 6 layers atmospheric model， the r₀ is 5 cm

Fig. 15. The box-plot comparison for the simulation and theory results of sodium beacon shift

Fig. 16. Scintillation index varies with different values of r₀