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遥感技术与应用  2012, Vol. 27 Issue (5): 728-734    DOI: 10.11873/j.issn.1004-0323.2012.5.728
模型与反演     
一种ASTER数据地表温度反演的劈窗算法
孙 静1,赵 萍2,叶 琦1
(1.安徽师范大学国土资源与旅游学院,安徽 芜湖 241000;2.合肥工业大学资源与环境工程学院,安徽 合肥 230009)
A Split-window Algorithm for Retrieving Land Surface Temperature from ASTER Data
Sun Jing1,Zhao Ping2,Ye Qi1
(1.College of Territorial Resources and Tourism,Anhui Normal University,Wuhu 241000,China;2.School of Resources and Enviromental Engineering,Hefei University of Technology,Hefei 230009,China)
 全文: PDF(1719 KB)  
摘要:

利用Planck函数分别计算ASTER13、14 两个波段温度在253~333 K范围内的辐射强度,建立两者之间的散点图,回归分析得到它们的指数关系式,应用于ASTER数据地表温度反演的劈窗算法推导。在大气参数的估计上采用三次多项式拟合大气透过率与大气水汽含量的关系以提高拟合精度。最后采用模拟数据法进行算法验证并对参数的敏感性进行分析,结果表明:该算法精度较高,对各种不同的地面温度和大气水汽含量情况进行反演的误差均在1 K以内,且对大气水汽含量和大气透过率的微小变化都不敏感。

关键词: ASTER劈窗算法地表温度反演Planck函数    
Abstract:

In this paper,firstly planck function is used to calculate the radiation intensity about the two bands(ASTER13、14) from the range of 253~333 K.Secondly the scatter plot between the two is set up.Thirdly,get a index formula based on regression analysis,which is applied to deduce split algorithm on land surface temperature inversion by ASTER data.On the estimates of atmospheric parameters,we use cubic polynomial to fit the relationship between atmospheric transmittance and atmospheric water vapor content in order to improve fit accuracy.Finally,the simulation data method is used to validate accuracy of the algorithm.The results indicate that if the error is under 1 K no matter what ground temperature and atmospheric water vapor content,the higher accuracy the algorithm have,the smaller the inversion error is.And then the sensitivity of parameters for the algorithm is analyzed,which demonstrates the parameters (atmospheric transmittance and atmospheric water vapor content) are not sensitive to the authors algorithm.

Key words: ASTER    Split window algorithms    Surface temperature inversion    Planck function
收稿日期: 2011-09-01 出版日期: 2012-10-17
:  P 404  
基金资助:

安徽省自然科学基金(1208086ME73),中国科学院对地观测与数字地球科学中心数字地球重点实验室开放基金(2010LDE05)资助。

作者简介: 孙 静(1985-),男,江苏南京人,硕士研究生,主要从事热红外遥感研究。Email:619347019@qq.com。
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引用本文:

孙 静,赵 萍,叶 琦. 一种ASTER数据地表温度反演的劈窗算法[J]. 遥感技术与应用, 2012, 27(5): 728-734.

Sun Jing,Zhao Ping,Ye Qi. A Split-window Algorithm for Retrieving Land Surface Temperature from ASTER Data. Remote Sensing Technology and Application, 2012, 27(5): 728-734.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2012.5.728        http://www.rsta.ac.cn/CN/Y2012/V27/I5/728

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