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Remote Sensing Technology and Application  2016, Vol. 31 Issue (5): 919-924    DOI: 10.11873/j.issn.1004-0323.2016.5.0919
    
Inter-calibration of AMSR-E and AMSR2 Brightness Temperature
Hu Tongxi1,2,Zhao Tianjie2,Shi Jiancheng2,Gu Jinzhi
(1.University of Chinese Academy of Sciences,Beijing 100049,China;
2.Institute of Remote Sensing and Digital Earth,State Key Laboratory of Remote
Sensing Science,Chinese Academy of Sciences,Beijing 100101,China;
3 Capital Normal University,Beijing 100048,China) 
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Abstract  

Long time series of earth observation data records play an important role in the research of earth environment changes and trends.Few of today’s satellite sensors can continually work for more than ten years.So it becomes much necessary to conduct inter\|calibration of sensors with similar physical configuration and over-lapped observation.However,the different system parameters and process of calibration make difference even during the concurrent observation in the same zone.AMSR-E and AMSR2 share the similar configuration and it is possible for us to select the overlapped observation during the period of 2013~2014 at 18.7 GHz and 36.5 GHz.After comparing the data,a least-square linear model was established to calibrate the two sensors.The results show that correlation between them up to 0.98 and the value difference ranges from 3 K to 6 K.This difference should not be ignored when constructing a long-term data record or during the retrieval of the land surface parameters.

Key words:  AMSR\      E;AMSR2;Inter\      calibration;Brightness temperature     
Received:  25 January 2016      Published:  25 November 2016
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Hu Tongxi
Zhao Tianjie
Shi Jiancheng
Gu Jinzhi

Cite this article: 

Hu Tongxi,Zhao Tianjie,Shi Jiancheng,Gu Jinzhi . Inter-calibration of AMSR-E and AMSR2 Brightness Temperature. Remote Sensing Technology and Application, 2016, 31(5): 919-924.

URL: 

http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2016.5.0919     OR     http://www.rsta.ac.cn/EN/Y2016/V31/I5/919

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