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Journal of Atmospheric and Environmental Optics
Contents
2015
Volume: 10 Issue 6
10 Article(s)
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Research Article
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Journal of Atmospheric and Environmental Optics
Publication Date: Jan. 01, 1900
Vol. 10, Issue 6, 1 (2015)
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Research Progress of Optical Scattering Transmission Properties of Haze and Other High Concentration of Atmospheric Aerosol
Qiang XU, Dongqin WANG, and Zhensen WU
Research progress of scatting transmission properties of high concentration of aerosol are introduced, such as haze, dust and so on. Such four aspects are emphasized: (1) physical-optical properties of high concentration of aerosol; (2) effects of relative humidity on aerosol scattering; (3) the polarization reflection
Research progress of scatting transmission properties of high concentration of aerosol are introduced, such as haze, dust and so on. Such four aspects are emphasized: (1) physical-optical properties of high concentration of aerosol; (2) effects of relative humidity on aerosol scattering; (3) the polarization reflection characteristics; (4) multiple scattering between ground and atmosphere, the vector radioactive transfer modeling in high concentration of aerosol..
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Journal of Atmospheric and Environmental Optics
Publication Date: Jan. 01, 1900
Vol. 10, Issue 6, 437 (2015)
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Research Progress of Supercontinuum Propagation in Atmosphere
Li KANG, and Wenyue ZHU
With the development of supercontinuum laser, more and more extensive applications of supercontinuum laser received researchers’ attention. Attenuation of light intensity, deflection of light propagation direction, changes of spot characteristic and so on are caused by the interaction of atmosphere and supercontinuum’s
With the development of supercontinuum laser, more and more extensive applications of supercontinuum laser received researchers’ attention. Attenuation of light intensity, deflection of light propagation direction, changes of spot characteristic and so on are caused by the interaction of atmosphere and supercontinuum’s light wave. The effect of supercontinuum propagation in atmosphere has two influences on supercontinuum application. The advantage is that the absorption characteristics of supercontinuum can be used to measure the concentration of various atmospheric constituents simultaneously. The disadvantage is that it may effect the energy transmission and imaging of supercontinuum. So research of the characteristics of supercontinuum propagation in atmosphere is an urgent demand. According to the introduction of recent developments in supercontinuum laser technology, spatial coherence properties, absorption characteristics and turbulence effects of supercontinuum laser, the prospect of future research work is put forward..
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Journal of Atmospheric and Environmental Optics
Publication Date: Jan. 01, 1900
Vol. 10, Issue 6, 445 (2015)
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Design Scheme of Network Data Management Software System of Environmental Optical Monitoring Instrument
Shuai ZHANG, Jiang QIAN, Yaodong WANG, Qibing SHI, Liang XU, and Jianguo LIU
A data management software system is introduced, which is designed for environmental optical monitoring instrument networking based on the BS and CS architecture. The .Net and J2ee technology are integrated to complete the development of the data acquisition module and server management module, .Net reflection mechanis
A data management software system is introduced, which is designed for environmental optical monitoring instrument networking based on the BS and CS architecture. The .Net and J2ee technology are integrated to complete the development of the data acquisition module and server management module, .Net reflection mechanism is used to realize the loose-coupling-hot-plug devices communication, a variety of communications equipment access problems are solved in the system. The goal of quality control and data management of the environmental optical monitoring instrument which installed in the same area is realized based on the data management software system. The role of the environmental optical monitoring instrument role is maximized in air pollution monitoring and control..
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Journal of Atmospheric and Environmental Optics
Publication Date: Jan. 01, 1900
Vol. 10, Issue 6, 455 (2015)
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Correlation Between Aerosol Layer Optical Depth from CALIPSO Satellite Lidar and Air Pollution Index in Qingdao
Hai QI, and Wenzhong CHEN
The column aerosol optical depth from satellite remote sensing was widely used for the comparison with ground-based observations of air pollution data, but there were influence on the correlation coefficients between them due to the lack of information about the aerosol vertical profile. The backscatter coefficients pr
The column aerosol optical depth from satellite remote sensing was widely used for the comparison with ground-based observations of air pollution data, but there were influence on the correlation coefficients between them due to the lack of information about the aerosol vertical profile. The backscatter coefficients profiles from CALIOP sensor onboard CALIPSO satellite were used to determine the atmospheric boundary layer (ABL) in Qingdao. It was found that the ABL was usually about 3 km in Qingdao. Then the aerosol optical depth with ABL less than 3 km in the CALIPSO lidar aerosol layer product were extracted to do correlation analysis with the ground-based observations of air pollution index (API) data in Qingdao. The result showed higher correlation coefficients compared with the column aerosol optical depth..
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Journal of Atmospheric and Environmental Optics
Publication Date: Jan. 01, 1900
Vol. 10, Issue 6, 463 (2015)
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Reflectance Characteristics of Dunhuang Radiometric Calibration Test Site
Weiwei PANG, Xiaobing ZHENG, Junhua LU, and Jianjun LI
Precise measurement of radiation calibration field surface reflectivity and the ratio between diffuse and total radiation are required when using the irradiance-based method to determine the satellite calibration coefficient of each band. From June to August in 2013, Anhui Institute of Optics and Fine Mechanics, Chines
Precise measurement of radiation calibration field surface reflectivity and the ratio between diffuse and total radiation are required when using the irradiance-based method to determine the satellite calibration coefficient of each band. From June to August in 2013, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, allying with other units, calibrated X satellite by using the irradiance-based method in Dunhuang Radiometric Calibration Test Site. ASD, SVC spectral radiometer were used and the surface reflectance was obtained by reference board reflectivity modify method during the measure process. The surface reflectance measurement and data processing method were elaborated, and the reflectance characteristics between 2013 and historical data were contrasted and analyzed. The results indicated that the surface reflectance of Dunhuang Radiometric Calibration Test Site maintained good stability both in space and time..
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Journal of Atmospheric and Environmental Optics
Publication Date: Jan. 01, 1900
Vol. 10, Issue 6, 472 (2015)
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Thermal Design and Experimental Investigation of Space Borne DOAS Instrument
Yi ZENG, Lijia GUI, Xiaoxiang ZHAO, Fenglei LIU, Hui XUE, and Fuqi SI
A space-borne differential absorption spectrometer is a high precision aerospace optical remote sensor. Hyperspectral, high spatial resolution spectral information can be obtained by passive DOAS technology. The temperature of device has a greater impact on the instrument measurement accuracy. It leads to severe temper
A space-borne differential absorption spectrometer is a high precision aerospace optical remote sensor. Hyperspectral, high spatial resolution spectral information can be obtained by passive DOAS technology. The temperature of device has a greater impact on the instrument measurement accuracy. It leads to severe temperature target. Due to complex and compact structure, it is hard for the instrument’s heat dissipation. To meet the temperature requirement, a thermal control scheme is presented by comprehensively analyzing the structure and power distribution feature as well as the space heat flux at sun-synchronous orbit. Thermal analysis tool I-DEAS/TMG is utilized to compute temperature distribution and fluctuations in several typical operating conditions. The heat balance experiment has been carried out to verify the thermal design. Furthermore, comparison of the simulation results and experimental data indicates that the device temperature is under control and within the preferred range..
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Journal of Atmospheric and Environmental Optics
Publication Date: Jan. 01, 1900
Vol. 10, Issue 6, 477 (2015)
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Measurement of Photon Count Rate Based on Broad-Band Parametric Down-Conversion
Dongyang GAO, Maopeng XIA, Jianjun LI, Youbo HU, Yan LIU, and Xiaobing ZHENG
In order to realize the calibration of photoelectric detector at continuous and broad-band based on correlated photon, it is necessary to investigate distribution of the correlated photon spectra and photon count rate. By simulating distribution rule of the correlated photon spectra and photon count rate, an experiment
In order to realize the calibration of photoelectric detector at continuous and broad-band based on correlated photon, it is necessary to investigate distribution of the correlated photon spectra and photon count rate. By simulating distribution rule of the correlated photon spectra and photon count rate, an experimental system is set up to measure the spectra distribution and the photon count rate distribution of continuous and broad-band correlated photon. The spectra distribution and the photon count rate during 450~710 nm are measured by using the system. Strict consistency is revealed by comparing theory simulation results with experimental ones, and the correlated coefficient is 99.39%. The results show that correlated photon have continuous and broad-band range. It can be applied to direct the calibration of quantum efficiency of photoelectric detector at continuous based on correlated photon in theory and experiment..
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Journal of Atmospheric and Environmental Optics
Publication Date: Jan. 01, 1900
Vol. 10, Issue 6, 482 (2015)
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Segmentation of Light Spots for Single-Light-Source Dual-Light-Path Transmissometer
Fengyu YANG, Ling YANG, Can MIAO, and Xiaoqiong ZHEN
Single-light-source dual-light-path transmissometer is a kind of transmissometers based on digital photography. The method of segmenting the light spots from the image is one of the key processes in the derivation of visibility. Based on the formation of the image, two methods of segmenting the light spots are presente
Single-light-source dual-light-path transmissometer is a kind of transmissometers based on digital photography. The method of segmenting the light spots from the image is one of the key processes in the derivation of visibility. Based on the formation of the image, two methods of segmenting the light spots are presented. The results computed with the two methods above are matched with the results of Vaisala LT31 very well, even without pre-processing of the images and post-processing of the data. In order to find the parameters involved in the two methods above, weighted mean squared error (WMSE) is introduced as a cost function. As a cost function, WMSE performs better than some other frequently used criterion. At the same time, WMSE can be adopted to assist the judgment of the performances of the methods above..
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Journal of Atmospheric and Environmental Optics
Publication Date: Jan. 01, 1900
Vol. 10, Issue 6, 495 (2015)
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Resonance Frequency Determination of Quartz Tuning Fork Based on Rapid Non-Electronic Measurement Methods
LIUYanyan , Xiaoli LIU, Hongpeng WU, Lei DONG, Weiguang MA, Lei ZHANG, YINWangbao , and Suotang JIA
Two rapid non-electronic measurement methods (acoustic and optical excitations) for the determination of quartz-tuning-fork (QTF) resonance frequency were developed. Unlike the traditional measurement, based on the electronic excitation, with the QTF vibration caused by an external excitation source, a detection light
Two rapid non-electronic measurement methods (acoustic and optical excitations) for the determination of quartz-tuning-fork (QTF) resonance frequency were developed. Unlike the traditional measurement, based on the electronic excitation, with the QTF vibration caused by an external excitation source, a detection light beam is used to convert the vibration amplitude of the QTF into the variation of the detection light intensity to avoid the use of piezoelectric effect. In the acoustic excitation experiment, the performance of the different sound generators and sound guide tube was assessed. The excitation position of the sound wave was optimized. In the optical excitation experiment, the excitation position of the light beam was optimized as well..
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Journal of Atmospheric and Environmental Optics
Publication Date: Jan. 01, 1900
Vol. 10, Issue 6, 505 (2015)
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