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Spaceborne radiance temperature standard blackbody for Chinese high-precision infrared spectrometer
Metrologia ( IF 2.1 ) Pub Date : 2020-10-29 , DOI: 10.1088/1681-7575/abbcc0 Xiaopeng Hao 1 , Jian Song 1 , Lei Ding 2 , Ping Wen 1 , Jianping Sun 1 , Yang Liu 1 , Zundong Yuan 1 , Yuning Duan 1 , Yong Zhang 3
Metrologia ( IF 2.1 ) Pub Date : 2020-10-29 , DOI: 10.1088/1681-7575/abbcc0 Xiaopeng Hao 1 , Jian Song 1 , Lei Ding 2 , Ping Wen 1 , Jianping Sun 1 , Yang Liu 1 , Zundong Yuan 1 , Yuning Duan 1 , Yong Zhang 3
Affiliation
As a radiance temperature standard source for the Chinese high-resolution spectrum infrared spectrometer, the National Institute of Metrology, China, developed a spaceborne radiance temperature standard blackbody (SRTSB) combined with a series of miniature phase change fixed points (MPCFPs) for temperature calibration and emissivity verification using a thermal radiation loop (TRL). The MPCFPs of the SRTSB contain H 2 O, Ga, Ga–Sn alloy, and phenyl salicylate. The TRL is used to measure the emissivity of the spaceborne blackbody on the basis of controlling environmental radiation. Experimental results show that the blackbody emissivity is higher than 0.998 and the temperature control stability is better than 5 mK. Temperature control uniformity at the cavity bottom and axial are better than or equal to 11 mK and 38 mK, respectively, in the working temperature range of 268.15 K to 331.15 K.. The repeatability of the MPCFPs is less than 5 mK, and the results of the contin...
更新日期：2020-10-30
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