Radiation Calibration of All-Sky Auroral Imager Based on Stellar Radiation Stability

Bing Han; Guojun Li; Zejun Hu; Yisheng Zhang

doi:10.3788/AOS202141.0512004

Acta Optica Sinica, Volume. 41, Issue 5, 0512004(2021)

Radiation Calibration of All-Sky Auroral Imager Based on Stellar Radiation Stability

Bing Han^1、**, Guojun Li^1,2、***, Zejun Hu^2、*, and Yisheng Zhang^3、****

Author Affiliations

¹School of Electronic Engineering, Xidian University, Xi′an, Shaanxi 710071, China

²MNR Key Laboratory of Polar Science, Polar Research Institute of China, Shanghai 200136, China

³Institute of Applied Meteorology, Beijing 100029, China

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Figures & Tables(10)

Fig. 1. Distribution of stars. (a) All-sky image of YRS; (b) star map in Stellarium

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Fig. 2. Visual motion track of stars and diagram of calculating stellar coordinates. (a) 24 h visual motion track of Vega; (b) diagram of calculating stellar coordinate in all-sky image

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Fig. 3. Stellar neighborhood

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Fig. 4. Scatter plot of six stars data

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Fig. 5. An event of DMSP F-16 satellite crossing all-sky field of view from 11:03:33 UT to 11:07:34 UT on December 2, 2005. (a) Trajectory of DMSP satellite projected onto all-sky images; (b) electron spectroscopy; (c) Keogram; (d) energy flux of precipitating electrons; (e) average energy of precipitating electrons; (f) auroral emission intensity

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Fig. 6. An event of DMSP F-16 satellite crossing all-sky field of view from 10:49:50 UT to 10:52:20 UT on December 19, 2005. (a) Trajectory of DMSP satellite projected onto all-sky images; (b) electron spectroscopy; (c) Keogram; (d) energy flux of precipitating electrons; (e) average energy of precipitating electrons; (f) auroral emission intensity

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Table 1. Diurnal variation of zenith angle of stars in December 22, 2003
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Table 1. Diurnal variation of zenith angle of stars in December 22, 2003
Number Star Diurnal variation of zenith angle
Minimum zenith angle /(°) Maximum zenith angle /(°)
1 Dubhe 17.19 39.35
2 Mirfak 29.05 51.20
3 Capella 32.92 55.07
4 Vega 40.14 62.29
5 Kochab 4.79 26.94
6 Mizar 24.02 46.17

Table 2. Number of star spots detected in 2003 and 2005
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Table 2. Number of star spots detected in 2003 and 2005
Year Star
Dubhe Mirfak Capella Vega Kochab Mizar
2003 2488 2316 700 371 2449 2093
2005 2441 1343 482 923 4315 2106

Table 3. Average radiation intensity of each star in 2003 and average detector output signal value in 2005

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Table 3. Average radiation intensity of each star in 2003 and average detector output signal value in 2005

Item	Star
Item	Dubhe	Mirfak	Capella	Vega	Kochab	Mizar
${\bar{I}}_{star}_{}$ /Rayleigh	114.2120	127.3730	572.8550	271.2808	103.0210	79.1181
${\bar{N}}_{star}_{}$ /count	106.5359	108.9025	477.2203	269.1365	91.7054	72.4376
c /(Rayleigh·count^-1)	1.0721	1.1696	1.2004	1.0080	1.1234	1.0922

Table 4. Differences of stellar radiation intensity in 2003 and 2005

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Table 4. Differences of stellar radiation intensity in 2003 and 2005

Star	Zenith angle /(°)		Average radiation intensity /Rayleigh		Difference /%
Star	Minimum	Maximum	2003	2005	Difference /%
Mirach	51.71	52.87	81.27	81.21	-0.07
Almach	42.69	43.80	88.23	88.52	0.33
Merak	31.37	32.54	66.46	69.56	4.67
Elnath	50.43	50.69	109.27	115.65	5.83
Alkaid	45.68	46.64	72.31	81.15	12.22

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Bing Han, Guojun Li, Zejun Hu, Yisheng Zhang. Radiation Calibration of All-Sky Auroral Imager Based on Stellar Radiation Stability[J]. Acta Optica Sinica, 2021, 41(5): 0512004

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Paper Information

Category: Instrumentation, Measurement and Metrology

Received: Sep. 11, 2020

Accepted: Nov. 2, 2020

Published Online: Apr. 7, 2021

The Author Email: Han Bing (bhan@xidian.edu.cn), Li Guojun (1556176733@qq.com), Hu Zejun (huzejun@pric.org.cn), Zhang Yisheng (zhangyisheng118@sina.com)

DOI:10.3788/AOS202141.0512004

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Diurnal variation of zenith angle of stars in December 22, 2003

Table 1. Diurnal variation of zenith angle of stars in December 22, 2003

Table 2. Number of star spots detected in 2003 and 2005

Table 2. Number of star spots detected in 2003 and 2005

Table 3. Average radiation intensity of each star in 2003 and average detector output signal value in 2005

Table 3. Average radiation intensity of each star in 2003 and average detector output signal value in 2005

Table 4. Differences of stellar radiation intensity in 2003 and 2005

Table 4. Differences of stellar radiation intensity in 2003 and 2005