Calibration Method for System Constants of Horizontal Detection Fluorescence Lidar

Yinchao Zhang; Yangcheng Ma; Siying Chen; He Chen; Pan Guo; Wangshu Tan; Daoming Li; Xian Yang

doi:10.3788/AOS202242.1828006

Acta Optica Sinica, Volume. 42, Issue 18, 1828006(2022)

Calibration Method for System Constants of Horizontal Detection Fluorescence Lidar

Yinchao Zhang, Yangcheng Ma, Siying Chen^*, He Chen^**, Pan Guo, Wangshu Tan, Daoming Li, and Xian Yang

Author Affiliations

School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China

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Figures & Tables(9)

Fig. 1. Flow chart of system constant calibration

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Fig. 2. Flow chart of numerical simulation

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Fig. 3. Results of aerosol concentration distribution inversion obtained by using simulated concentration data from three different locations. (a) Concentration distribution curve of target aerosol; (b) result curve of target aerosol concentration retrieved from data at 140 m; (c) result curve of target aerosol concentration retrieved from data at 147 m; (d) result curve of target aerosol concentration retrieved from data at 149 m

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Fig. 4. Comparison of inversion results of target aerosol concentration using two different methods. (a) Simulated concentration distribution curve of target aerosol; (b) result curve of target aerosol concentration obtained by inversion; (c) partial enlarged view of area A in Fig. 4(b); (d) partial enlarged view of area B in Fig. 4(b)

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Fig. 5. Comparison of aerosol concentration inversion errors based on two calibration methods at different $M_{R S N}$ . (a) $M_{R S N}$ =40 dB; (b) $M_{R S N}$ =30 dB; (c) $M_{R S N}$ =25 dB;(d) $M_{R S N}$ =20 dB; (e) $M_{R S N}$ =15 dB; (f) $M_{R S N}$ =10 dB

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Fig. 6. Influence of geometric factor variation on inversion results of two calibration methods. (a) Relationship curve between geometric factor and distance when deviation between laser emission optical path and optical axis of telescope is 1.2 mrad; (b) error curves of target aerosol concentration retrieval based on two calibration methods under different signal to noise ratios

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Fig. 7. Schematic diagram of experimental scene

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Fig. 8. Results of system constant calibration experiments. (a) Curve of concentration varying with time obtained by particle counter in first experiment; (b) echo signal detected by lidar system in first experiment; (c) curve of system constant varying with time obtained by calculation; (d) curve of concentration varying with time obtained by particle counter in second experiment; (e) echo signal detected by lidar system in second experiment; (f) curve of particle concentration varying with time at position of 15 m obtained by inversion

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Table 1. Parameters used in simulation

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Table 1. Parameters used in simulation

Parameter	Value
Laser wavelength $λ_{0} / n m$	355
Beam divergence angle $θ_{b} / m r a d$	0.1
Telescope aperture $D / m m$	120
Telescope field of view $θ_{t} / m r a d$	1
Geometric factor $ξ (z)$	1
Detector quantum efficiency $η$ /%	21.24
Background light noise $N_{b} / s^{- 1}$	$10^{8}$
Dark noise $N_{d} / s^{- 1}$	$10^{3}$
Molecular extinction coefficient $α_{m} (λ_{0}) / k m^{- 1}$	$6.5 \times 10^{- 2}$
Mie backscattering cross section $S_{e}$ /（m²·sr^-1）	$10^{- 12}$
Fluorescence backscattering cross section $S_{c}$ /（m²·sr^-1）	$10^{- 15}$

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Yinchao Zhang, Yangcheng Ma, Siying Chen, He Chen, Pan Guo, Wangshu Tan, Daoming Li, Xian Yang. Calibration Method for System Constants of Horizontal Detection Fluorescence Lidar[J]. Acta Optica Sinica, 2022, 42(18): 1828006

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Paper Information

Category: Remote Sensing and Sensors

Received: Feb. 9, 2022

Accepted: Apr. 15, 2022

Published Online: Sep. 15, 2022

The Author Email: Siying Chen (csy@bit.edu.cn), He Chen (shinianshao@bit.edu.cn)

DOI:10.3788/AOS202242.1828006

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology