Simulation and Measurement of Skylight Polarization Distributionin in Yellow Sea

Yan Cui; Jinyong Zhao; Le Guan; Jinkui Chu; Xiguang Zhang; hui Liu

doi:10.3788/AOS201737.1001004

Acta Optica Sinica, Volume. 37, Issue 10, 1001004(2017)

Simulation and Measurement of Skylight Polarization Distributionin in Yellow Sea

Yan Cui¹, Jinyong Zhao¹, Le Guan^2、*, Jinkui Chu¹, Xiguang Zhang¹, and hui Liu³

¹ Key Laboratory for Precision and Non-Traditional Machining, Ministry of Education, Dalian University of Technology, Dalian, Liaoning 116024, China

² Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, Dalian, Liaoning 116024, China

³ College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian, Liaoning 116026, China

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Figures & Tables(9)

Fig. 1. Schematic of horizontal coordinate system

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Fig. 2. Simulated polarization distribution patterns of sunlight. (a) Polarization azimuth angle; (b) polarization degree

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Fig. 3. Simulated polarization distribution patterns of moonlight. (a) Polarization azimuth angle; (b) polarization degree

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Fig. 4. Schematic of image measurement system with full-sky polarization pattern

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Fig. 5. Tested polarization distribution patterns of sunlight. (a) Original images; (b) polarization azimuth angle; (c) polarization degree

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Fig. 6. Tested polarization distribution patterns of moonlight. (a) Original images; (b) polarization azimuth angle; (c) polarization degree

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Table 1. Measuring geographical coordinate and position of sun

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Table 1. Measuring geographical coordinate and position of sun

Time	Latitude	Longitude	Altitude angle /(°)	Azimuth angle /(°)
13:00	36°06'N	124°57'E	65.66	59.22
14:00	34°21'N	124°50'E	54.99	74.59
15:00	34°36'N	124°43'E	41.66	86.18
16:00	34°52'N	124°43'E	30.18	94.00
17:00	35°08'N	124°28'E	18.27	101.64

Table 2. Measuring geographical coordinate and position of moon

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Table 2. Measuring geographical coordinate and position of moon

Time	Latitude	Longitude	Altitude angle /(°)	Azimuth angle /(°)
19:00	35°39'N	124°13'E	25.12	-42.54
19:30	35°48'N	124°12'E	28.66	-35.64
20:00	35°54'N	124°07'E	31.63	-28.17
20:30	36°01'N	124°05'E	33.91	-20.17
21:00	36°08'N	124°01'E	35.43	-11.72
21:30	36°15'N	123°56'E	36.11	-2.99

Table 3. Specifications of fisheye lens and linear polarizer

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Table 3. Specifications of fisheye lens and linear polarizer

Component	Technical parameter	Nominal value
Fisheye lens	Maximum aperture /mm	3.75
	Minimum aperture /mm	0.47
	Focal length /mm	10.5
	Picture angle /(°)	180
Linear polarizer	Thickness /mm	0.75
	Extinction ratio	9000∶1
	Transmission /%	42
	Wavelength range /nm	400-700
	Polarization efficiency /%	99

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Yan Cui, Jinyong Zhao, Le Guan, Jinkui Chu, Xiguang Zhang, hui Liu. Simulation and Measurement of Skylight Polarization Distributionin in Yellow Sea[J]. Acta Optica Sinica, 2017, 37(10): 1001004

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Paper Information

Category: Atmospheric Optics and Oceanic Optics

Received: Apr. 17, 2017

Accepted: --

Published Online: Sep. 7, 2018

The Author Email: Le Guan (haishengtian@mail.dlu)

DOI:10.3788/AOS201737.1001004

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology