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Remote Sensing Technology and Application  2011, Vol. 26 Issue (5): 682-688    DOI: 10.11873/j.issn.1004-0323.2011.5.682
    
Radiometric Calibration and Validation of CCD Cameras on HJ-1 Satellite
Gong Hui1,Tian Guoliang2,3,Yu Tao2,3,Gu Xingfa2,3,Gao Hailiang2,3,Wang Zuo2,3,4,Li Xiaoying2,3,Li Jiaguo2,3
(1.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;2.Institute of Remote Sensing Applicatiom,Chinese Academy of Sciences,Beijing 100101,China;3.The Center for National Spaceborne Demonstration,Beijing 100101,China;4.School of Geographical Sciences,Fujian Normal University,Fuzhou 350007,China)
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Abstract  

To meet demand of quantitative application for HJ-1 satellite data,a vicarious calibration experiment for CCD cameras onboard HJ-1A and HJ-1B satellites was proposed in the middle of October 2008.The reflectance-based method was used.The radiometric response change of each CCD camera was ascertained and error analysis of the calibration coefficients was developed.Meantime,regarding apparent radiances obtained from CCD data of the synchro measurements at Dunhuang test site and Gongger test site as the standard values,which were not at the same day as the calibration experiment,validation research of the calibration coefficients was performed.It showed that the apparent radiances obtained by calibration coefficients were fairly consistent with the standard values and the errors were all less than 3%.It was proved that the calibration result has high accuracy.And then an average value of calibration coefficients from both synchro data was determined as the last result.The result laid the good foundation for quantitative application of CCD cameras.
 

Key words:  CCD camera onboard HJ-1      Radiometric calibration      Validation      Calibration coefficient     
Received:  25 January 2011      Published:  01 November 2011
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Gong Hui,Tian Guoliang,Yu Tao,Gu Xingfa,Gao Hailiang,Wang Zuo,Li Xiaoying,Li Jia. Radiometric Calibration and Validation of CCD Cameras on HJ-1 Satellite. Remote Sensing Technology and Application, 2011, 26(5): 682-688.

URL: 

http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2011.5.682     OR     http://www.rsta.ac.cn/EN/Y2011/V26/I5/682

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