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CAS IR Grid
机构
长春光学精密机械与物... [3]
地球化学研究所 [1]
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OAI收割 [4]
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会议论文 [3]
期刊论文 [1]
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2016 [1]
2010 [2]
2006 [1]
学科主题
矿床地球化学 [1]
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Triple Oxygen Isotopes: Fundamental Relationships and Applications
期刊论文
OAI收割
Annual Review of Earth & Planetary Sciences, 2016, 卷号: 44, 期号: 1, 页码: 463-492
作者:
Justin A. Hayles
;
Huiming Bao
;
Xiaobin Cao
  |  
收藏
  |  
浏览/下载:19/0
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提交时间:2017/09/25
Oxygen-17
Laboratory Calibration
Air Oxygen
Seawater
Silicates
Nonequilibrium
Research on radiometric calibration of interline transfer CCD camera based on TDI working mode (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:
Liu J.-G.
;
Wu X.-X.
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2013/03/25
Interline transfer CCD camera can be designed to work in time delay and integration mode similar to TDI CCD to obtain higher responsivity and spatial resolution under poor illumination condition. However it was found that outputs of some pixels were much lower than others' as interline transfer CCD camera work in TDI mode in laboratory radiometric calibration experiments. As a result photo response non-uniformity(PRNU) and signal noise ratio(SNR) of the system turned for the worse. This phenomenon's mechanism was analyzed and improved PRNU and SNR algorithms of interline transfer CCD camera were advanced to solve this problem. In this way TDI stage was used as a variant in PRNU and SNR algorithms and system performance was improved observably with few influences on use. In validation experiments the improved algorithms was applied in radiometric calibration of a camera with KAI-0340s as detector. Results of validation experiments proved that the improved algorithms could effectively improve SNR and lower PRNU of the system. At the same time characteristic of the system could be reflected better. As working in 16 TDI stages
PRUN was reduced from 2.25% to 0.82% and SNR was improved about 2%. 2010 Copyright SPIE - The International Society for Optical Engineering.
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.
收藏
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浏览/下载:26/0
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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.
Research on the radiometric calibration of TDI CCD remote camera (EI CONFERENCE)
会议论文
OAI收割
ICO20: Illumination, Radiation, and Color Technologies, August 21, 2005 - August 26, 2005, Changchun, China
Liu Y.-X.
;
Hao Z.-H.
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浏览/下载:18/0
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提交时间:2013/03/25
The radiometric calibration of the Time delay and integration Charge-coupled Device (TDI CCD) imaging system is a necessary part in the manufacturing TDI CCD camera. The radiometric calibration of the TDI CCD remote sensing camera is done in the State Key Laboratory of Applied Optics. The integration sphere is used for simulating different radiance
which is decided by the different sun vertex angle and different reflectivity of the ground. The parameters of the gain and stage of the TDI CCD remote sensing camera are given through the analyzing of outcome of the experiment. The outcomes are used in the practice and the errors are discussed in the end of the experiments.