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An infrared DoLP computational model considering surrounding irradiance
Liu HZ(刘海峥)1,2,3; Shi ZL(史泽林)1,2,3; Feng B(冯斌)3,4
Department光电信息技术研究室
Source PublicationInfrared Physics and Technology
ISSN1350-4495
2020
Volume106Pages:1-9
Indexed BySCI ; EI
EI Accession number20201508383250
WOS IDWOS:000526111900001
Contribution Rank1
Funding OrganizationChina Equipment Pre-research Foundation (2017-61404150203) ; China Postdoctoral Science Foundation (2017 M621174).
KeywordInfrared emission Polarization DoLP pBRDF Depolarization
Abstract

The infrared polarization degree of an object is affected by its own characteristics along with surroundings. This paper proposes an infrared polarization computational model to analyze the depolarization effect of surroundings. We prove that the sum of emissivity and reflectivity is equal to one in the s-polarized or p-polarized direction based on a coherent matrix of polarization, and this proof lays a theoretical basis for the specular emission polarization. Additionally we propose an emission Stokes vector for rough surface based on the blackbody emissivity vector, which is derived from polarization bi-directional reflectance distribution function (pBRDF). Finally, we combine the reflection and the emission together to present a complete computational model of degree of linear polarization (DoLP). The presented model implies the depolarization impact of temperature difference. An infrared polarization measurement environment is constructed to validate the model. Experimental results show the depolarization effect is in agreement with the prediction of the model. In addition to the known factors, such as observation angle, roughness, and material, the radiation from surroundings would alter the ratio of emission to incidence and affects the measured DoLP of infrared polarization. When the emitted radiation is close to incident radiation, the polarization degrades and even disappears.

Language英语
WOS SubjectInstruments & Instrumentation ; Optics ; Physics, Applied
WOS KeywordEMISSION POLARIZATION ; SURFACE ; LIGHT
WOS Research AreaInstruments & Instrumentation ; Optics ; Physics
Funding ProjectChina Equipment Pre-research Foundation[2017-61404150203] ; China Postdoctoral Science Foundation[2017 M621174]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/26657
Collection光电信息技术研究室
Corresponding AuthorLiu HZ(刘海峥)
Affiliation1.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang
2.Liaoning 110016, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences
5.Shenyang, Liaoning 110016, China
6.Northwestern Polytechnical University, Xi'an 710072, China
Recommended Citation
GB/T 7714
Liu HZ,Shi ZL,Feng B. An infrared DoLP computational model considering surrounding irradiance[J]. Infrared Physics and Technology,2020,106:1-9.
APA Liu HZ,Shi ZL,&Feng B.(2020).An infrared DoLP computational model considering surrounding irradiance.Infrared Physics and Technology,106,1-9.
MLA Liu HZ,et al."An infrared DoLP computational model considering surrounding irradiance".Infrared Physics and Technology 106(2020):1-9.
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