Qiang Zhao, Hongchao Su, Mingjian Yi, Dongsheng Yu, Chidong Xu. Aerosol Horizontal Distribution Detected by Lidar in Excavation Stage of Construction Site Foundation Pit[J]. Chinese Journal of Lasers, 2021, 48(20): 2010001
- Chinese Journal of Lasers
- Vol. 48, Issue 20, 2010001 (2021)
Fig. 1. LVIS-T100 portable lidar. (a) Overall appearance; (b) radar system structure
Fig. 2. Lidar observation of construction site. (a) Location map; (b) site map of foundation pit excavation
Fig. 3. Geometric factor correction of lidar. (a) Geometric factor; (b) change number of echo photons before and after geometric factor correction
Fig. 4. Horizontal extinction coefficient profiles at four moments on August 24, 2019
Fig. 5. Correlation between extinction coefficient and PM10 mass concentration
Fig. 6. Histogram of the hourly mean value of PM10 mass concentration
Fig. 7. Horizontal distribution profiles of PM10 mass concentration at 9 o'clock every day from October 19 to 22
Fig. 8. Change of PM10 mass concentration at different distances on October 22, 2019
Fig. 9. Contour map of PM10 mass concentration change
Fig. 10. Profile of the contour line of PM10 mass concentration change
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Table 1. Lidar parameters
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Table 2. Comparison of the relative error between the inversion hourly mean value and the measured value of PM10 mass concentration at 0.21 km
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