Fig. 1. Schematic diagram of the designed DFOL system

Fig. 2. Geometric overlap factor of DFOL

Fig. 3. Echo signals detected by the DFOL

Fig. 4. Fitting result of the chlorophyll-a concentration obtained by ACLW-CAR and DFOL signal

Fig. 5. Inversion results of chlorophyll-a concentration under different laser energy. (a) 0.28 mJ; (b) 0.4 mJ

Fig. 6. Fitting result of the detected concentration of 0.1 μm suspended matter by ACLW-CAR and DFOL signal

Fig. 7. Fitting result of the detected concentration of 1 μm suspended matter by ACLW-CAR and DFOL signal

Fig. 8. Graphs of shore experiment. (a) DFOL; (b) ACLW-CAR

Fig. 9. Echo signals (a) and SNR (b) of DFOL acquired in shore experiment

Fig. 10. Fitting result of the DFOL inversion data of

Fig. 11. Fitting result of the DFOL inversion data of suspended matter and ACLW-CAR detection data