第34卷，第7期 2014年7算
光谱学与光谱分析 Spectroscopy and Spectral Analysis
Vol. 34,No. 7 -pp1736-1741
July，2014
AStudyoftheCouplingRelationshipBetweenConcreteSurface
Temperatureand ConcreteSurfaceEmissivity
in Natural Conditions
TANGLin-ling,CHENXiao-ling,WANGJia-ning
ZHAO Hong-meil*,HUANG Qi-ting
1 . Key Laboratory of Wetland and Watershed Research , Ministry of Education , Jiangxi Normal University , Nanchang330022, China
2 . State Key Laboratory of Information Engineering in Surveying , Mapping and Remote Sensing , Wuhan University , Wuhan430079, China
3. Yamaguchi University , 16-1 Tokiwadai 2-chome, Ube-shi, 755-8611, Japan
4. Institute of Remote Sensing and Digital Earth , Chinese Aeademy of Sciences , Beijing 100101 , China
Abstract Land surface emissivity (LSE ) has already been recognized as a crucial parameter for the determina tion of land surface temperature (LST ). There is an ill-posed problem for the retrieval of LST and LSE . And laboratory-based emissivity is measured in natural constant conditions , which is limited in the application in thermal remote sensing . To solve the above problems , the coupling of LST and LSE is explored to eliminate temperature effects and improve the accuracy of LES . And then , the estimation accuracy of LST from passive remote sensing images will be improved . For different land surface materials , the coupling of land surface em issivity and land surface temperature is various . This paper focuses on studying concrete surface that is one of the typical man-made materials in urban . First the experiments of measuring concrete surface emissivity and concrete surface temperature in natural conditions are arranged reasonably and the suitable data are selected un -der ideal atmosphere conductions . Then to improve the determination accuracy of concrete surface emissivity , the algorithm worked on the computer of Fourier Transform Infrared Spectroradiometer (FTIR ) has been im-proved by the most adapted temperature and emissivity separation algorithm . Finally the coupling of concrete surface temperature and concrete surface emissivity is analyzed and the coupling model of concrete surface tem -perature and concrete surface emissivity is established . The results show that there is a highest correlation co -efficient between the second derivative of emissivity spectra and concrete surface temperature , and the correla-tion coefficient is 0. 925 1. The best coupling model is the stepwise regression model , whose determination coefficient (R ) is 0. 886. The determination coefficient （R ) is 0. 905 and the root mean squares error(RMSE) is O. 292 1 in the validation of the model . The coupling model of concrete surface temperature and concrete surface emissivity under natural conditions provides a new approach for improving the estimation accu -racy of LST from passive remote sensing images .
KeywordsTemperature; Emissivity ; Coupling ; In natural conditions
中图分类号：TP79
文献标识码：A
Received : 2013-09-21 ; accepted : 2014-01-19
D0I;10.3964/j.issn.1000-0593(2014)07-1736-06
Foundation item: Natural Science Foundation of China (41101341) and innovation fundation of Jiangxi Normal University (YJS2013019)
Biography : TANG Lin-ling , (1989—), studying in Key Laboratory of Wetland and Watershed Research , Ministry of Education , Jiangxi Nor
mal University
e-mail : tanglinlingnjl@ 163 .com
× Corresponding author
e-mail ; zhm8012@tom.com