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Title:Performance analysis of high-spectral-resolution lidar with/without laser seeding technique for measuring aerosol optical properties
Authors:ID Gao, Fengjia (Author)
ID Gao, Fei (Author)
ID Li, Gaipan (Author)
ID Yang, Fan (Author)
ID Wang, Li (Author)
ID Yuehui, Song (Author)
ID Hua, Dengxin (Author)
ID Stanič, Samo (Author)
Files:URL https://www.sciencedirect.com/science/article/pii/S014381662400112X
 
Language:English
Work type:Unknown
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:High-spectral-resolution lidar (HSRL) is a powerful tool for aerosol measurements. With/without laser seeding technique in the transmitted laser, the HSRL can be distinguished as the single-longitudinal-mode (SLM) HSRL or the multi-longitudinal-mode (MLM) HSRL, and the Mach-Zehnder interferometer (MZI) with periodic transmittance function can be used as the spectral discriminator in both the SLM HSRL and MLM HSRL. To in-depth knowledge of the respective advantages of the SLM HSRL and MLM HSRL for measuring aerosol optical properties, the working principle, optimal parameter setting, and detection performance of the SLM HSRL and MLM HSRL are analyzed and discussed in detail, respectively. The working principle of the SLM HSRL and MLM HSRL indicate that the effective transmittance of MZI is the important parameter of data retrieval, the main source of retrieval uncertainties, and the key factor of MZI optical path difference (OPD) settings. To ensure that the MZI can achieve the preferable separation for aerosol Mie scattering signals and molecular Rayleigh scattering signals, the optimal OPDs of MZI are set at 165 mm and 1000 mm in the SLM HSRL and MLM HSRL from the aspects of the effective transmittance of MZI and the spectral discrimination ratio (SDR). Besides, to analyze the influence of frequency difference and divergence angle for the detection performance of HSRL, the effective transmittance of MZI and SDR are simulated and the results show that the MLM HSRL has higher requirements for the environmental parameters and the echo beam collimation than the SLM HSRL. Moreover, the HSRLs with SLM and MLM transmitted lasers are constructed in Xi'an for measuring aerosol optical properties. The preliminary measurement results show that the range square corrected signal (RSCS) of Rayleigh channel is smaller than that of Mie channel in both the SLM HSRL and MLM HSRL, while the difference between RSCS of Rayleigh channel and RSCS of Mie channel in the SLM HSRL is larger than that in the MLM HSRL, and the detection range of the SLM HSRL is lower than that of the MLM HSRL.
Keywords:aerosol optical properties, high-spectral-resolution lidar, single-longitudinal-mode, multi-longitudinal-mode, spectral discrimination ratio
Publication date:01.06.2024
Year of publishing:2024
Number of pages:str. 1-11
Numbering:Vol. 177, [article no.] ǂ108133
PID:20.500.12556/RUNG-8904 New window
COBISS.SI-ID:187119619 New window
UDC:53
ISSN on article:0143-8166
DOI:10.1016/j.optlaseng.2024.108133 New window
NUK URN:URN:SI:UNG:REP:CSDEZ6JY
Publication date in RUNG:28.02.2024
Views:496
Downloads:2
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Record is a part of a journal

Title:Optics and lasers in engineering
Shortened title:Opt. lasers eng.
Publisher:Elsevier
ISSN:0143-8166
COBISS.SI-ID:6399749 New window

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:I0-E018
Name:Sofinanciranje izvajanja mednarodnega infrastrukturnega projekta CTA

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P1-0031
Name:Večglasniška astrofizika

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