Retrival Method of Side-Scatter Lidar Signal Based on Charge Coupled Device Technique

Xiaomin, 麻晓敏 Ma; Zongming, 陶宗明 Tao; Mingjun, 马明俊 Ma; Chengjun, 李成军 Li; Zhenzhu, 王珍珠 Wang; Dong, 刘东 Liu; Chenbo, 谢晨波 Xie; Yingjian, 王英俭 Wang

doi:10.3788/aos201434.0201001

Cited by 5 publications

(4 citation statements)

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“…Backscattering lidar is a powerful tool to detect aerosol profile, and is widely used in atmospheric monitoring (Weitkamp, 2005;Winker et al, 2007;Bo et al, 2014;Wang et al, 2014b). But the common backscattering lidar system has a shortcoming in the lower hundreds of meters because of the geometric form factor (GFF) caused by the configuration of the transmitter divergence and receiver's field of view (FOV) at the near range (Mao et al, 2012;Wang et al, 2015b). With the recently developed technique of the CCD side-scattering lidar (Bernes et al, 2003;Tao et al, 2014a;Ma et al, 2014), the problem caused by the GFF could be solved.…”

Section: Introductionmentioning

confidence: 99%

“…But the common backscattering lidar system has a shortcoming in the lower hundreds of meters because of the geometric form factor (GFF) caused by the configuration of the transmitter divergence and receiver's field of view (FOV) at the near range (Mao et al, 2012;Wang et al, 2015b). With the recently developed technique of the CCD side-scattering lidar (Bernes et al, 2003;Tao et al, 2014a;Ma et al, 2014), the problem caused by the GFF could be solved. Moreover, the nearer range and the better spatial resolution could be obtained.…”

Section: Introductionmentioning

confidence: 99%

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Profiling the PM2.5 mass concentration vertical distribution in the boundary layer

Wang¹,

Yang²,

Shan³

et al. 2015

Preprint

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Abstract. Fine particle (PM2.5) affects human life and activities directly; the detection of PM2.5 mass concentration profile is very essential due to its practical and scientific meanings (such as, quantifying of air quality and its variability, and improving air quality forecast and assessment). But so far, it is difficult to detect PM2.5 mass concentration profile. The proposed methodology to study the relationship between aerosol extinction coefficient and PM2.5 mass concentration is described, which indicates that the PM2.5 mass concentration profile could be retrieved by combining a charge-coupled device (CCD) side-scatter lidar and a PM2.5 sampling detector. When the relative humidity is less than 70 %, PM2.5 mass concentration is proportional to aerosol extinction coefficient, and then the specific coefficient can be calculated. Using this specific coefficient, aerosol extinction profile is converted to PM2.5 mass concentration profile. Three cases of clean night (on 21 September 2014), pollutant night (on 17 March 2014), and heavy pollutant night (on 13 February 2015) are studied. The characteristic of PM2.5 mass concentration profile in near-ground during these three nights' cases in the western suburb of Hefei city was discussed. The PM2.5 air pollutant concentration is comparatively large in close surface varying with time and altitude. The experiment results show that the CCD side-scatter lidar combined with a PM2.5 detector is an effective and new method to explore pollutant mass concentration profile in near-ground.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Profiling the PM2.5 mass concentration vertical distribution in the boundary layer

Wang¹,

Yang²,

Shan³

et al. 2015

Preprint

View full text Add to dashboard Cite

show abstract

“…The side-scattering light is received by a CCD camera with 3352 × 2532 pixels. The exposed time is set as 5 min according to the signal-to-noise ratio with a maximum relative error of 1.5 % caused by noises (Ma et al, 2014), and there is an interference filter with 30 nm bandwidth in front of CCD lens. Through geometric calibration, the relationship between the pixels and the corresponding scattering lights in laser beam is determined.…”

Section: Instrumentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Profiling the PM2.5 mass concentration vertical distribution in the boundary layer

et al. 2016

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Abstract. Fine particles (PM 2.5 ) affect human life and activities directly; the detection of PM 2.5 mass concentration profile is very essential due to its practical and scientific significance (such as the quantification of air quality and its variability as well as the assessment of improving air quality forecast). But so far, it has been difficult to detect PM 2.5 mass concentration profile. The proposed methodology to study the relationship between aerosol extinction coefficient and PM 2.5 mass concentration is described, which indicates that the PM 2.5 mass concentration profile could be retrieved by combining a charge-coupled device (CCD) side-scatter lidar with a PM 2.5 sampling detector. When the relative humidity is less than 70 %, PM 2.5 , mass concentration is proportional to the aerosol extinction coefficient, and then the specific coefficient can be calculated. Through this specific coefficient, aerosol extinction profile is converted to PM 2.5 mass concentration profile. Three cases of clean night (on 21 September 2014), pollutant night (on 17 March 2014), and heavy pollutant night (on 13 February 2015) are studied. The characteristics of PM 2.5 mass concentration profile at the near-ground level during the cases of these 3 nights in the western suburb of Hefei city were discussed. The PM 2.5 air pollutant concentration is comparatively large close to the surface and varies with time and altitude. The experiment results show that the CCD side-scatter lidar combined with a PM 2.5 detector is an effective and new method to explore pollutant mass concentration profile at the near-ground level.

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Current status and development trends of wind measurement lidar technology and its applications

Liu,

Wang,

et al. 2023

Third International Conference on Optics and Image Processing (ICOIP 2023)

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Retrival Method of Side-Scatter Lidar Signal Based on Charge Coupled Device Technique

Cited by 5 publications

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Profiling the PM<sub>2.5</sub> mass concentration vertical distribution in the boundary layer

Profiling the PM<sub>2.5</sub> mass concentration vertical distribution in the boundary layer

Profiling the PM<sub>2.5</sub> mass concentration vertical distribution in the boundary layer

Current status and development trends of wind measurement lidar technology and its applications

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Retrival Method of Side-Scatter Lidar Signal Based on Charge Coupled Device Technique

Cited by 5 publications

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Profiling the PM&lt;sub&gt;2.5&lt;/sub&gt; mass concentration vertical distribution in the boundary layer

Profiling the PM&lt;sub&gt;2.5&lt;/sub&gt; mass concentration vertical distribution in the boundary layer

Profiling the PM&lt;sub&gt;2.5&lt;/sub&gt; mass concentration vertical distribution in the boundary layer

Current status and development trends of wind measurement lidar technology and its applications

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Profiling the PM<sub>2.5</sub> mass concentration vertical distribution in the boundary layer

Profiling the PM<sub>2.5</sub> mass concentration vertical distribution in the boundary layer

Profiling the PM<sub>2.5</sub> mass concentration vertical distribution in the boundary layer