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| Development of Blackbody Radiation Sources at Fixed Point on Satellite of Infrared Hyperspectral Atmospheric Detector |
| HU Chao-yun1,2,HAO Xiao-peng2,SONG Jian2,3,4,WEN Ping2,CHANG Jia-qiang1,2,GU Ming-jian3,4,DING Lei3,4 |
1. College of Applied Nuclear Technology and Automation Engineering, Chengdu University of Technology,Chengdu,Sichuan 610059, China
2. National Institute of Metrology, Beijing 100029, China
3. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
4. Key Laboratory of Infrared System Detection and Imaging Technology, Chinese Academy of Sciences, Shanghai 20083, China |
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Abstract The miniature gallium fixed point onboard blackbody radiation source developed by National Institute of Metrology for the infrared hyperspectral atmospheric detector of Fengyun No.3 05 satellite is introduced. The black body radiation source cavity is designed, and the effective emissivity of the black body radiation source is better than 0.997. The structure design and performance test of blackbody radiation source with fixed point on satellite are studied. Blackbody radiation source uses double heating, one PID control output, one constant power output. Thermal simulation of spaceborne fixed point blackbody radiation source at 17 ℃, the temperature uniformity result is better than 0.01 ℃. The results of uniformity and stability of blackbody radiation source in vacuum are better than 0.02 ℃ and better than 0.002 ℃ (within 90 min), respectively. The reproducibility of the gallium fixed point is better than that of 0.03 ℃ by satisfying the mechanical impact test of aerospace application. There is a good linear relationship between the heating power and the inflection point value in the micro-fixed point phase transition temperature plateau reappearance experiment.
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Received: 08 November 2018
Published: 07 March 2019
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Corresponding Authors:
Xiaopeng Hao
E-mail: haoxp@nim.ac.cn
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2019, Vol. 40 
