Fig. 1. Schematic diagram of laser transmission and bubble structure of sea surface-bubble layer

Fig. 2. Two-dimensional sea surface with different wind speeds simulated by JONSWAP spectrum. (a)--(d) u₁₀=10 m/s; (e)--(h) u₁₀=20 m/s

Fig. 3. Laser transmittance in sea surface varying with time

Fig. 4. Attenuation efficiency factor of bubble and extinction coefficient of bubble layer. (a) Attenuation efficiency factor of single bubble particle varying with particle radius; (b) extinction coefficient of bubble layer varying with depth under different wind speeds

Fig. 5. Blue-green laser transmittance varying with transmission angle under different wind speeds. (a) u₁₀=10 m/s; (b) u₁₀=20 m/s

Fig. 6. Blue-green laser transmittance varying with incident angle under different wind speeds. (a) u₁₀=10 m/s; (b) u₁₀=20 m/s

Fig. 7. Influence of wind speed on blue-green laser transmittance. (a) Blue-green laser transmittance varying with transmission angle; (b) blue-green laser transmittance varying with incident angle

Fig. 8. Influence of azimuth angle on laser transmittance. (a) Blue-green laser transmittance varying with transmission angle; (b) blue-green laser transmittance varying with incident angle