Fig. 1. Component structure and performance analysis of Raman laser. (a) Schematic diagram of Raman laser optical path; (b) 280 nm channel power test; (c) 295 nm channel power test

Fig. 2. Portable Raman differential absorption lidar in horizontal observation mode. (a) Live shooting of lidar; (b) relative position of lidar

Fig. 3. Comparison of ozone concentrations monitored by horizontal differential absorption lidar (800 m) and 49i

Fig. 4. Analysis between ozone concentrations monitored by horizontal differential absorption lidar (800 m) and 49i. (a) Deviation distribution; (b) correlation

Fig. 5. Sounding balloon and portable Raman differential absorption lidar in vertical observation mode

Fig. 6. Comparison results of differential absorption lidar and ozone sonde. (a) 8:00; (b) 13:00; (c) 18:00; (d) 24:00

Fig. 7. Monitoring results of ozone concentration and meteorological elements from February 9 to 10. (a) Comparison of differential absorption lidar monitoring results with Hongkou and Jing’an environmental protection sites; (b) wind speed and wind direction; (c) temperature, relative humidity and pressure

Fig. 8. Results of ozone concentration monitoring by differential absorption lidar and Hongkou environmental protection site from February 17 to 18

Fig. 9. Results of vehicle-mounted ozone lidar vehicle navigation observation experiment in Ningbo, Zhejiang Province, on May 8, 2024. (a) Three-dimensional diagram; (b) time series diagram