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The effect of temperature distribution on reflectors in satellite optical terminals 会议论文  OAI收割
Nanjing, PEOPLES R CHINA, 2017-10-24
作者:  
Wang Chenjie;  Shangguan Aihong;  Chai Wenyi;  Hu Yongming;  Tao, Wenquan
  |  收藏  |  浏览/下载:38/0  |  提交时间:2018/07/05
Thermal Effect on Optical Properties of Spatial Heterodyne Spectroscopy 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 卷号: 34
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  |  收藏  |  浏览/下载:20/0  |  提交时间:2020/10/26
Research on the laboratory radiometric calibration of the thermal imager (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Wang J.;  Liu Y.;  Liu Y.;  Liu Y.;  Sun Q.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
The radiometric calibration of the thermal imager was investigated to build the relationship between the input radiance and the digital output to realize the temperature measurement. The radiometric calibration was implemented in the State Key Laboratory of Applied Optics. A standard black body source was served as radiation source. The response of the thermal imager to the input radiance was tested for different gains. The experimental results show that the average grey level of the output imaging is linear dependence of the input radiance. Because the radiance in the receiving wave range of the thermal imager is linear with the black body's temperature based on Planck's law of radiation  the average grey level of the output image is also linear with the black body's temperature after fitting a curve to the experiment data points. Then the relationship of the response and the gain was studied when the black body's temperature kept constant. The preliminary analysis of calibration data shows that the response of the thermal imager is linear and the average grey value of the image is directly proportion to the gain. According to the experimental results  the reference gains and the dynamic range of temperature measurement were obtained. Finally  the uncertainty influencing the calibration results was analyzed  the analysis shows the maximal uncertainty is 5.2%  which can meet the calibration requirement less than 10%. 2010 Copyright SPIE - The International Society for Optical Engineering.