System for measuring the spatial reflectance distribution of material surfaces

Berni, L. A.; Ribeiro, Martha S.; Paes, Tiago Franca; Beloto, A.F.

doi:10.1088/1742-6596/605/1/012003

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…High-temperature graphite and high-temperature rocks, that were slightly directional and slightly Lambertian, were considered as observation targets for experimental observation and verification [ 27 ]. The graphite plate used was a high-purity graphite produced by Sanjing Carbon Co., Ltd.…”

Section: Experimental Implementation and Data Collectionmentioning

confidence: 99%

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

Sun¹,

Jiang²,

Hao³

et al. 2022

Sensors

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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.

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Section: Experimental Implementation and Data Collectionmentioning

confidence: 99%