High-Resolution Scattered Radiation Measurement in Ultraviolet Band Based on Spatial Heterodyne Spectroscopy Technique

doi:10.3964/j.issn.1000-0593(2019)02-0357-06

	High-Resolution Scattered Radiation Measurement in Ultraviolet Band Based on Spatial Heterodyne Spectroscopy Technique
	Fang Xue-jing 1,2,3; Luo Hai-yan1,3 ; Shi Hai-liang1,3 ; Li Zhi-wei1,3 ; Hu Guang-xiao 1,2,3; Jin Wei1,2,3 ; Zhang Ji-cheng 1,2,3; Xiong Wei1,2,3
	2019-02-01
发表期刊	SPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN	1000-0593
通讯作者	Xiong Wei(frank@aiofm.ac.cn)
摘要	The hydroxyl (OH) radical is the most important oxidizing agent in the photochemical reactions which helps to understand the atmospheric components and photochemistry events in mesosphere. OH radical's solar resonance fluorescence A(2)Sigma(+) - X-2 Pi(0,0) is the excited emergent light by solar radiation around 308 nm. Hyper-spectral Resolution Spectrometer for Mesospheric OH Radical is developed to detect OH ultraviolet solar resonance fluorescence in mesosphere and separate target signal from complex background signal. The spectral range is 308. 2 similar to 309. 8 nm and its spectral resolution is 0. 008 25 nm. Limb observation mode detects atmospheric scattering signal which consists of atmospheric molecules, aerosols and cloud scattered by solar energy. Hyper-spectral Resolution Spectrometer for Mesospheric OH Radical is based on Spatial Heterodyne Spectroscopy technique. SHS technique receives rather high spectral resolution around Littrow wavelength and is applicable to fine detection of atmospheric components. Adding cylindrical lens front or behind the optical system results in several split-fields of view. Each split corresponds line of detector imaging plane. Limb observation can obtain limb-scattered signal at different height simultaneously using layered imaging in spatial dimension with SHS technique rather than traditional limb detector scanning at different height. In order to validate detection ability and sensitivity to observation geometry of Hyper-spectral Resolution Spectrometer for Mesospheric OH Radical , a ground-based limb observation experiment is built up to detect atmospheric limb-scattered signal around 308 nm. Simulating limb mode geometry in a clear sky, limb-scattered radiation is detected in an open place. Interferogram error correction and spectrum restoration are needed due to the fact that the instrument is based on SHS. Spectrum restoration and calibration are done to a serial interferogram data at 10 min interval in a period of observation time to obtain final spectrum. The source of scattered radiation is the atmospheric molecule' s scattering of sunlight, so the spectrum should contain high-resolution features information of solar spectrum. Choose 3 feature windows from high-resolution solar spectrum and analyze correspond band in observation spectrum. It turns out that the feature windows match completely. The results can validate detection ability and fine spectrum extracting ability of Hyper-spectral Resolution Spectrometer for Mesospheric OH Radical. Radiative transfer model is set using real time aerosol optical thickness measured by solar radiometer, real time solar zenith and azimuth angle and atmospheric profiles with corresponding date, longitude and latitude. A comparison is taken between simulation spectrum and observation spectrum. Their residual is rather small. The residual between them due to the mismatch between atmospheric parameters setting and actual situation. Real time temperature and pressure profiles are considered to bring in radiative transfer model in the future. These results validate limb-scattered radiation detection ability and fine spectrum extracting ability and sensitivity to observation geometry of Hyper-spectral Resolution Spectrometer for Mesospheric OH Radical. The experiment results not only validate the feasibility in detecting multi-band and broad-band limb-scattered signal and OH target signal on orbit, but also provide theoretical and experimental foundation for orbital limb-scattering signal detection.
关键词	Spatial heterodyne spectroscopy technique Limb Scattered radiation High resolution SCIATRAN
DOI	10.3964/j.issn.1000-0593(2019)02-0357-06
收录类别	SCI
语种	英语
WOS研究方向	Spectroscopy
WOS类目	Spectroscopy
WOS记录号	WOS:000459748800004
出版者	OFFICE SPECTROSCOPY & SPECTRAL ANALYSIS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/42449
专题	中科院安徽光学精密机械研究所
通讯作者	Xiong Wei
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Hefei 230031, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Key Lab Opt Calibrat & Characterizat, Hefei 230031, Anhui, Peoples R China
第一作者单位	中科院安徽光学精密机械研究所
通讯作者单位	中科院安徽光学精密机械研究所
推荐引用方式 GB/T 7714	Fang Xue-jing,Luo Hai-yan,Shi Hai-liang,et al. High-Resolution Scattered Radiation Measurement in Ultraviolet Band Based on Spatial Heterodyne Spectroscopy Technique[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2019,39(2):357-362.
APA	Fang Xue-jing.,Luo Hai-yan.,Shi Hai-liang.,Li Zhi-wei.,Hu Guang-xiao.,...&Xiong Wei.(2019).High-Resolution Scattered Radiation Measurement in Ultraviolet Band Based on Spatial Heterodyne Spectroscopy Technique.SPECTROSCOPY AND SPECTRAL ANALYSIS,39(2),357-362.
MLA	Fang Xue-jing,et al."High-Resolution Scattered Radiation Measurement in Ultraviolet Band Based on Spatial Heterodyne Spectroscopy Technique".SPECTROSCOPY AND SPECTRAL ANALYSIS 39.2(2019):357-362.