Multi-Irradiance: A Method for Simultaneous Measurement of the Temperature and Spectral Emissivity of High-Temperature Targets in SWIR

Sun, Yehan; Pan, Jun; Jiang, Lijun; Hao, Libo; Cao, Yu; Wang, Helin

doi:10.3390/s22218469

Open AccessArticle

Multi-Irradiance: A Method for Simultaneous Measurement of the Temperature and Spectral Emissivity of High-Temperature Targets in SWIR

by

Yehan Sun

,

Jun Pan

^*,

Lijun Jiang

,

Libo Hao

,

Yu Cao

and

Helin Wang

College of Geo-Exploration Science & Technology, Jilin University, Changchun 130012, China

^*

Author to whom correspondence should be addressed.

Sensors 2022, 22(21), 8469; https://doi.org/10.3390/s22218469

Submission received: 6 October 2022 / Revised: 31 October 2022 / Accepted: 1 November 2022 / Published: 3 November 2022

(This article belongs to the Special Issue Towards Optoelectronic Technology: From Basic Research to Applications)

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Abstract

The currently used energy methods in spectral emissivity measurement are susceptible to the difference in temperature between the target and the reference blackbody. It is also limited by the state of the observation target and observation. This paper introduces the irradiance condition, while using the correlation between the information of emission energy and reflected energy of the high-temperature target. Based on the principle of radiative transmission and energy conservation, the relationship between the emissivity and bidirectional reflectance factor (BRF) was used to perform the retrieval of emissivity and temperature. An experimental device was designed, and graphite and rock were considered to verify the feasibility of the experimental scheme. The error of emissivity and temperature of both targets were, respectively, less than 5% and 0.5%, due to the Lambertian assumption, and the systematic errors had negligible impact on the retrieval. This verifies that the experimental observation method and scheme is reasonable.

Keywords: high-temperature target; spectral emission; SWIR; multi-irradiance; emissivity–temperature separation

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MDPI and ACS Style

Sun, Y.; Pan, J.; Jiang, L.; Hao, L.; Cao, Y.; Wang, H. Multi-Irradiance: A Method for Simultaneous Measurement of the Temperature and Spectral Emissivity of High-Temperature Targets in SWIR. Sensors 2022, 22, 8469. https://doi.org/10.3390/s22218469

AMA Style

Sun Y, Pan J, Jiang L, Hao L, Cao Y, Wang H. Multi-Irradiance: A Method for Simultaneous Measurement of the Temperature and Spectral Emissivity of High-Temperature Targets in SWIR. Sensors. 2022; 22(21):8469. https://doi.org/10.3390/s22218469

Chicago/Turabian Style

Sun, Yehan, Jun Pan, Lijun Jiang, Libo Hao, Yu Cao, and Helin Wang. 2022. "Multi-Irradiance: A Method for Simultaneous Measurement of the Temperature and Spectral Emissivity of High-Temperature Targets in SWIR" Sensors 22, no. 21: 8469. https://doi.org/10.3390/s22218469

APA Style

Sun, Y., Pan, J., Jiang, L., Hao, L., Cao, Y., & Wang, H. (2022). Multi-Irradiance: A Method for Simultaneous Measurement of the Temperature and Spectral Emissivity of High-Temperature Targets in SWIR. Sensors, 22(21), 8469. https://doi.org/10.3390/s22218469

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Multi-Irradiance: A Method for Simultaneous Measurement of the Temperature and Spectral Emissivity of High-Temperature Targets in SWIR

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