Fig. 1. Oceanic lidar system design scheme

Fig. 2. System object

Fig. 3. Physical design of launch and receiver subsystem

Fig. 4. Monopulse signal of 486 nm parallel channel

Fig. 5. (a) Peak intensity of 1-minute signal; (b) Peak position of lidar echo signal; (c) Peak position of lidar echo signal after quality control; (d) Average signal before and after quality control

Fig. 6. (a) Average signals before and after alignment to the reference position; (b) Average signals before and after alignment according to correlation

Fig. 7. (a) Average signals before and after removing background noise (rectangular coordinate system); (b) Average signals before and after removing background noise (logarithmic coordinate system)

Fig. 8. (a) Average signals before and after deconvolution (rectangular coordinate system); (b) Average signals before and after deconvolution (logarithmic coordinate system)

Fig. 9. (a) Profile of 1-minute average signal; (b) SNR profile of 1-minute average signal

Fig. 10. (a) Signal profile of 4-hour 532 nm parallel channel; (b) Signal profile of 4-hour 486 nm parallel channel

Fig. 11. (a) Lidar attenuation coefficient profile of 4-hour 532 nm parallel channel; (b) Lidar attenuation coefficient profile of 4-hour 486 nm parallel channel

Fig. 12. Attenuation coefficient of lidar