Fig. 1. Sketch map of multi-layer phase screen method

Fig. 2. Schematic of different beam arrangements. (a) 3×3 beam array with rectangle distribution; (b) 7 beam array with radial distribution; (c) single Gaussian beam

Fig. 3. Average radii of beams under different turbulence conditions. (a) Z=10 m, ε=10-6 m2·s-3, ω=-2,η=0.001 m, λ=532 nm; (b) Z=10 m, ε=10-6 m2·s-3, χT=10-6 K2·s-1, η=0.001 m, λ=532 nm; (c) ε=10-6 m2·s-3, χT=10-6 K2·s-1, ω=-2, η=0.001 m, λ=532 nm; (d) Z=10 m, χT=10-6 K2·s-1, ω=-2, η=0.001 m, λ=532 nm

Fig. 4. Distribution of spot centroid

Fig. 5. Standard deviation of spot centroid wander. (a) Z=10 m, ε=10-6 m2·s-3, ω=-2, η=0.001 m, λ=532 nm; (b) Z=10 m, ε=10-6 m2·s-3, χT=10-6 K2·s-1, η=0.001 m, λ=532 nm; (c) ε=10-6 m2·s-3, χT=10-6 K2·s-1, ω=-2, η=0.001 m, λ=532 nm; (d) Z=10 m, χT=10-6 K2·s-1, ω=-2, η=0.001 m, λ=532 nm

Fig. 6. Numerical simulation of on-axis scintillation index of beam array. (a) Z=10 m, ε=10-6 m2·s-3, ω=-2, η=0.001 m, λ=532 nm; (b) Z=10 m, ε=10-6 m2·s-3, χT=10-6 K2·s-1, η=0.001 m, λ=532 nm; (c) ε=10-6 m2·s-3, χT=10-6 K2·s-1, ω=-2, η=0.001 m, λ=532 nm; (d) Z=10 m, χT=10-6 K2·s-1, ω=-2, η=0.001 m, λ=532 nm