Infrared and Laser Engineering, Volume. 52, Issue 11, 20230138(2023)
Meteorological multi-element detection based on coherent lidar
Figures & Tables(11)
Fig. 3. Comparision of lidar and Vaisala laser-ceilometer cloud height data. (a) Time series diagram; (b) Scatter diagram
Fig. 4. Comparision of lidar and visibility meter data. (a) Time series diagram; (b) Scatter diagram
Fig. 6. Extinction coefficient comparison in haze day. (a) 1550 nm coherent lidar; (b) 532 nm aerosol lidar
Fig. 7. Extinction coefficient comparison in clear day. (a) 1550 nm coherent lidar; (b) 532 nm aerosol lidar
Fig. 8. Extinction coefficient comparison in overcast and rainy day. (a) 1550 nm coherent lidar; (b) 532 nm aerosol lidar
Fig. 9. Extinction coefficient comparison in foggy day. (a) 1550 nm coherent lidar; (b) 532 nm aerosol lidar
Table 1. System parameters of the coherent wind lidar
View tableView in ArticleTable 1. System parameters of the coherent wind lidar
Parameter Value Wavelength/μm 1.55 Pulse energy/μJ 150 Pulse repetition rate/kHz 10 Temporal resolution/s ≤1 Range resolution/m 15-200 (adjustable) Wind speed accuracy/m·s–1 0.3 Wind direction accuracy/(°) 3
Table 2. System parameters of the coherent wind lidar and aerosol lidar
View tableView in ArticleTable 2. System parameters of the coherent wind lidar and aerosol lidar
System parameter The coherent wind lidar The aerosol lidar Wavelength/nm 1550 532 Detection mode Coherent detection Direct detection Range/km 10 15 Antenna T-R combine, 100 mm T-R separate, 160 mm Pulse energy/μJ 150 20 Pulse repetition rate 10 000 2 000 Data products Wind; Extinction coefficient; Visibility; Aerosol concentration Extinction coefficient; Visibility; PM10 concentration; PM2.5 concentration; Depolarization ratio Advantages No bland zone, without geometric factor correction; Eye-safe; High sensitivity, high time resolution, secondary data acquisition time Visible light, closer to human visibility Disadvantages Invisible light, data conversion required Long acquisition time; Not eye-safe; Bland zone, geometric factor correction required
Tools
Get Citation
Copy Citation Text
Xiong Luo, Yue Shi, Qi Fan, Wei Yin, Tao Peng, Peie Zhao, Ke Wang, Dingfu Zhou. Meteorological multi-element detection based on coherent lidar[J]. Infrared and Laser Engineering, 2023, 52(11): 20230138
Paper Information
Category:
Received: Mar. 13, 2023
Accepted: --
Published Online: Jan. 8, 2024
The Author Email: Zhou Dingfu (df_xh_zhou@sina.com)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20