Ground Layer Aerosol Detection Technology During Daytime Based on Side-Scattering Lidar

Xiaomin Ma; Zongming Tao; Lulu Zhang; Huihui Shan; Hui Zhang; Mingjun Ma; Shenhao Wang; Yingjian Wang

doi:10.3788/AOS201838.0401005

Acta Optica Sinica, Volume. 38, Issue 4, 0401005(2018)

Ground Layer Aerosol Detection Technology During Daytime Based on Side-Scattering Lidar

Xiaomin Ma^1,2,3, Zongming Tao^1,3、*, Lulu Zhang⁴, Huihui Shan³, Hui Zhang³, Mingjun Ma⁵, Shenhao Wang³, and Yingjian Wang^1,2

Author Affiliations

¹ Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China

² University of Science and Technology of China, Hefei, Anhui 230026, China

³ Department of Basic Sciences, Army Officer Academy, Hefei, Anhui 230031, China

⁴ Department of Information Technology, Anhui Vocational College of Grain Engineering, Hefei, Anhui 230011, China

⁵ Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China

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Figures & Tables(10)

Fig. 1. Structural diagram of lidar system

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Fig. 2. Diagram of filter and incident beam

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Fig. 3. Relative transmittance curve of filter

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Fig. 4. Signal curves with different exposure times

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Fig. 5. Ground layer profile of aerosol backscattering coefficient at 16:00 on 2016-12-07

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Fig. 6. Variation in profile of aerosol backscattering coefficient with time

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Fig. 7. Temperature curve

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Fig. 8. PM2.5 mass concentration curve

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Table 1. Main technical parameters of lidar system

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Table 1. Main technical parameters of lidar system

Laser: Nd∶YAG(continuum surlite)		Backward receiver: telescope (Cassegrain)		Sideward receiver: CCD (ST-8300M, SBIG, America)
Wavelength λ /nm	532	Diameter /mm	300	Pixel array	3352×2532
Pulse energy N₀ /mJ	250	Iris /mrad	0.5-3.0	Pixel size /μm×μm	5.4×5.4
Repetition rate /Hz	20	Detector (PMT)	R7400-U02	Lens focal length /mm	85
Divergence /mrad	0.5	A/D converter /bit	16	Filter bandwidth Δλ /nm	1

Table 2. Relationship between exposure time and photon counts

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Table 2. Relationship between exposure time and photon counts

Exposure time /s	Lamp photon counts	Background light photon counts	Net photon counts	Ratio
5.0	26209	1163	25046	49.7
4.0	21510	1126	20384	40.4
3.0	16304	1132	15172	30.1
2.0	10855	1039	9816	19.5
1.0	5848	1060	4888	9.7
0.5	3410	1047	2363	4.7
0.1	1510	1006	504	1.0

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Xiaomin Ma, Zongming Tao, Lulu Zhang, Huihui Shan, Hui Zhang, Mingjun Ma, Shenhao Wang, Yingjian Wang. Ground Layer Aerosol Detection Technology During Daytime Based on Side-Scattering Lidar[J]. Acta Optica Sinica, 2018, 38(4): 0401005

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Paper Information

Category: Atmospheric Optics and Oceanic Optics

Received: Sep. 22, 2017

Accepted: --

Published Online: Jul. 10, 2018

The Author Email: Zongming Tao (zmtao@aiofm.ac.cn)

DOI:10.3788/AOS201838.0401005

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology