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The concept of effective emissivity of nonisothermal mixed pixel and its test
Chen, LF; Zhuang, JL; Xu, XR; Niu, Z; Zhang, RH; Xiang, YQ
2000-05-01
Source PublicationCHINESE SCIENCE BULLETIN
Volume45Issue:9Pages:788-795
AbstractBased on two preconditions, the local thermal equilibrium is satisfied and emissivities do not change with temperature, the concept of component effective emissivity of nonisothermal mixed pixel has been put forward and then the radiant directionality model of nonisothermal mixed pixel constructed from it. Our study shows that the component effective emissivity is associated with geometric structure, optical properties of target, and viewing angle, but does not depend on the component temepratures. The component temperatures can only change the ratio of component radiance to the total radiance of the mixed-pixel. The total effective emissivity of this pixel is the complement of its directional-hemisphere reflectance. After the simulation of component effective emissivity of the discrete cones and continuous vegetation canopy (winter wheat) by the Monte Carlo method, our model of radiant directionality of nonisothermal mixed pixel have been proved by lab and field measurements.
SubtypeArticle
KeywordNonisothermal Mixed Pixel Component Effective Emissivity Multiple Scattering
WOS HeadingsScience & Technology
WOS Subject ExtendedScience & Technology - Other Topics
WOS KeywordTEMPERATURE
Indexed BySCI
Language英语
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000087504300004
PublisherSCIENCE PRESS
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68276
Collection中国科学院地理科学与资源研究所
Corresponding AuthorChen, LF
Affiliation1.Peking Univ, Inst RS & GIS, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Inst Remote Sensing, Beijing 100101, Peoples R China
3.Chinese Acad Sci, Inst Geog, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Chen, LF,Zhuang, JL,Xu, XR,et al. The concept of effective emissivity of nonisothermal mixed pixel and its test[J]. CHINESE SCIENCE BULLETIN,2000,45(9):788-795.
APA Chen, LF,Zhuang, JL,Xu, XR,Niu, Z,Zhang, RH,&Xiang, YQ.(2000).The concept of effective emissivity of nonisothermal mixed pixel and its test.CHINESE SCIENCE BULLETIN,45(9),788-795.
MLA Chen, LF,et al."The concept of effective emissivity of nonisothermal mixed pixel and its test".CHINESE SCIENCE BULLETIN 45.9(2000):788-795.
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