Fig. 1. Schematic diagram of the dual-wavelength lidar

Fig. 2. Simulation of signal-to-noise ratio

Fig. 3. SNR of the actual detection. (a) During daytime detection; (b) during nighttime detection

Fig. 4. Detection extinction coefficient profile of aerosol on a fine day

Fig. 5. Detection ozone concentration profile on a fine day

Fig. 6. Detection results on a fine day. (a) Extinction profiles of aerosols without ozone; (b) Angstrom index; (c) absolute error of extinction coefficient at 266 nm; (d) absolute error of Angstrom index

Fig. 7. Detection extinction profiles of aerosols on a haze day

Fig. 8. Detection ozone concentration profile on a haze day

Fig. 9. Detection results on a haze day. (a) Extinction profiles of aerosols without ozone; (b) Angstrom index; (c) absolute error of extinction coefficient at 266 nm; (d) absolute error of Angstrom index

Fig. 10. Concentrations of ozone obtained by the Mie lidar compared with weather station

Fig. 11. THI of aerosol extinction coefficient from 20:00 CST to 03:00 CST. (a) Aerosol extinction coefficient at 266 nm without ozone absorption coefficient; (b) aerosol extinction coefficient at 355 nm without ozone absorption coefficient