High Resolution Ultraviolet Direct Solar Spectrum Measurement Based on Spatial Heterodyne Spectroscopy

Xuejing Fang; Haiyan Luo; Hailiang Shi; Zhiwei Li; Guangxiao Hu; Wei Jin; Jicheng Zhang; Wei Xiong

doi:10.3788/AOS201838.0601001

Acta Optica Sinica, Volume. 38, Issue 6, 0601001(2018)

High Resolution Ultraviolet Direct Solar Spectrum Measurement Based on Spatial Heterodyne Spectroscopy

Xuejing Fang^1,2,3, Haiyan Luo^1,3, Hailiang Shi^1,3, Zhiwei Li^1,3, Guangxiao Hu^1,2,3, Wei Jin^1,2,3, Jicheng Zhang^1,2,3, and Wei Xiong^1,2,3、*

Author Affiliations

¹ Anhui Institute of Optics and Fine Mechanics, Hefei Institute of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, China

² University of Science and Technology of China, Hefei, Anhui 230026, China

³ Key Laboratory of Optical Calibration and Characterization of Chinese Academy of Sciences, Hefei, Anhui 230031, China

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Figures & Tables(12)

Fig. 1. Structure schematic diagram of SHS

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Fig. 2. Schematic diagram of layered imaging of SHS

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Fig. 3. Schematic diagram of limb mode geometry

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Fig. 4. OH A2∑+-X2Π (0,0) allowed transition diagram

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Fig. 5. Ultra-spectral resolution spectrometer for mesospheric OH radical for sun-observing system

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Fig. 6. (a) Original interferogram; (b) original row interferogram and row interferogram after removing dark current and baseline

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Fig. 7. (a)Spectrum before calibration; (b)spectrum after calibration

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Fig. 8. Solar spectrum

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Fig. 9. Comparison between measurement and simulation

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Table 1. Major performance indexes of ultra-spectral resolution spectrometer for mesospheric OH radicals

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Table 1. Major performance indexes of ultra-spectral resolution spectrometer for mesospheric OH radicals

Parameter	Performance index
Spectral range /nm	308.2-309.8
Spectral resolution /nm	0.00825
Spectral stability /nm	0.005
Field of view /(°)	2(35 split-field of view)
Signal to noise ratio	100-200
Observe mode	Limb
Profile resolution /km	2

Table 2. Experiment parameters
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Table 2. Experiment parameters
Parameter Performance index
Time 2017-09-25T11:30:00
Latitude, longitude 31°54'N,117°09'E
Solar zenith angle 45.07°
Solar azimuth angle 171.26°
Weather Clear sky

Table 3. Main setting in radiative transfer model

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Table 3. Main setting in radiative transfer model

Parameter	Performance index
Spectral range /nm	308.2-309.8
Spectral step /nm	0.0001
Half width at half maximum of ILS /nm	0.0041
Solar zenith angle /(°)	45.07
Solar azimuth angle /(°)	171.26
Observe mode	Zenith
Atmospheric model	Bremen 2D model
Atmospheric profiles database	SCIATRAN Database in October at 30°N
Latitude, longitude	31°54'N,117°09'E
Boundary layer aerosol type	Rural

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Xuejing Fang, Haiyan Luo, Hailiang Shi, Zhiwei Li, Guangxiao Hu, Wei Jin, Jicheng Zhang, Wei Xiong. High Resolution Ultraviolet Direct Solar Spectrum Measurement Based on Spatial Heterodyne Spectroscopy[J]. Acta Optica Sinica, 2018, 38(6): 0601001

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