Zifan Liu, Hao Che, Zhenfeng Gong, Kun Liu, Liang Mei. Development of Scheimpflug Lidar Technique for Measuring Attenuation Coefficient of Water Body[J]. Chinese Journal of Lasers, 2022, 49(12): 1210003
- Chinese Journal of Lasers
- Vol. 49, Issue 12, 1210003 (2022)
Fig. 1. Schematic of measurement principle. (a) Schematic of Scheimpflug lidar in water bodies; (b) refraction of light at an interface
Fig. 2. Schematic of Scheimpflug lidar system for water-body measurements, and CMOS camera is tilted for 45°
Fig. 3. Measurement distance and range resolution of lidar system. (a) Relationship between pixel and distance；(b) relationship between measurement distance and range resolution
Fig. 4. Image of laser beam and lidar profiles. (a) Schematic of imaging effect of transmitted laser beam in tap water; (b) pixel-intensity curve of lidar signal; (c) distance-intensity curve of lidar signal after pixel-distance transform
Fig. 5. Temporal and spatial distribution of water-body lidar signal measured at different time on December 24-26，2021
Fig. 6. Range-resolved lidar signals with different mass concentrations of fat emulsion (Intralipid) measured at different time on December 24-26, 2021
Fig. 7. Lidar signal profiles and inversion results measured at different time on December 25, 2021. (a) Typical lidar signals; (b) attenuation coefficients retrieved by Klett method
Fig. 8. Temporal and spatial distribution of water attenuation coefficient obtained by Klett method at different time on December 24-26, 2021
Fig. 9. Relationship between Intralipid mass concentration and attenuation coefficient retrieved by slope method and Klett method
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