Development of Ultraviolet Dual-Wavelength Lidar and Analysis of Its Signal-to-Noise Ratio

Jiangfeng, 邵江锋 Shao; Dengxin, 华灯鑫 Hua; Li, 汪丽 Wang; Dong, 王东 Wang; Rui, 潘睿 Pan

doi:10.3788/aos202040.1201004

Cited by 3 publications

(2 citation statements)

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“…The ozone concentration shows a nonlinear change with altitude. The ultraviolet differential lidar system proposed by Jiangfeng Shao also has similar results in detecting the ozone concentration profile [29]. The maximum ozone concentration at ground level is 58.7 ppb.…”

Section: Casementioning

confidence: 76%

A Fitting Method of Inverting Ozone Concentration Profile Using Ultraviolet Differential Charge-Coupled Device Imaging Lidar

Shan,

Zhang,

et al. 2023

Photonics

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Ozone near the surface of the atmosphere directly stimulates the human respiratory tract and affects human health. In recent years, ozone pollution in China has become a serious problem, so controlling ozone pollution is an urgent task. Differential absorption lidar is a useful tool for detecting ozone concentration, but it cannot receive complete signals in the lower hundreds of meters because of the overlap factor. CCD imaging lidar technology can effectively solve this problem. A fitting method of inverting the ozone concentration profile using ultraviolet differential CCD imaging lidar is proposed in this paper. The effect of three different types of aerosol extinction coefficient, three different types of ozone concentration, and five different types of aerosol wavelength index on retrieving ozone concentrations was analyzed using simulation. For clean aerosol, the relative error of the retrieved ozone concentration is less than 5%. As to polluted aerosol, the relative error of the retrieved ozone concentration is less than 10%. As to heavily polluted aerosol, the relative error of the retrieved ozone concentration is less than 25%. The results show that the larger the value of the aerosol extinction coefficient, the larger the relative error of the retrieved ozone concentration; meanwhile, the lower the ozone concentration, the larger the relative error of the retrieved ozone concentration; at the same time, the further the aerosol wavelength index deviates from 1, the larger the relative error of the retrieved ozone concentration. The relative error of the retrieved ozone concentration in this case was about 4%. It is shown that this fitting method of retrieving ozone concentrations is reasonable and feasible.

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Section: Casementioning

confidence: 76%

A Fitting Method of Inverting Ozone Concentration Profile Using Ultraviolet Differential Charge-Coupled Device Imaging Lidar

Shan,

Zhang,

et al. 2023

Photonics

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show abstract

“…Zhao Yirui et al 7 used UV multi-wavelength lidar to make simultaneous observations of ozone and aerosol in Wangdu County, Hebei Province. Shao et al 8 developed a UV dual-wavelength lidar for the detection of atmospheric aerosol in the troposphere. Zhong et al 9,10,11,12 discussed the influence of sea clutter on the detection range of airborne radar and gave the formula for the maximum detection range of a radar.…”

Section: Introductionmentioning

confidence: 99%

Research on radar-ultraviolet cooperative detection algorithm for lower RCS targets

Qiang,

Li,

Chen

2024

Fifteenth International Conference on Signal Processing Systems (ICSPS 2023)

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With the rapid development of new stealth technology and materials for aircraft, the traditional radar detection technology faces many difficulties in the detection of lower RCS targets. In order to improve the detection accuracy of space targets, this paper adopts the radar-ultraviolet cooperative detection method based on the radar working principle and ultraviolet radiation theory, and proposes a radar-ultraviolet cooperative detection algorithm for lower RCS targets. This paper takes the DF-15 missile as an example, and studies the radar-ultraviolet cooperative detection results of the missile in the detection of lower RCS characteristics, and the results show that when encountering the lower RCS target characteristics, the leakage detection rate is higher when only using radar detection, while the radar-ultraviolet cooperative detection can improve the accuracy of the target recognition, and the leakage detection rate is lower.

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紫外多波长激光雷达的臭氧浓度反演及分析

Shen Ji,

Cao Nianwen,

Lu Xinglai

et al. 2024

Chin. J. Laser

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Development of Ultraviolet Dual-Wavelength Lidar and Analysis of Its Signal-to-Noise Ratio

Cited by 3 publications

References 0 publications

A Fitting Method of Inverting Ozone Concentration Profile Using Ultraviolet Differential Charge-Coupled Device Imaging Lidar

A Fitting Method of Inverting Ozone Concentration Profile Using Ultraviolet Differential Charge-Coupled Device Imaging Lidar

Research on radar-ultraviolet cooperative detection algorithm for lower RCS targets

紫外多波长激光雷达的臭氧浓度反演及分析

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