The concept of effective emissivity of nonisothermal mixed pixel and its test

	The concept of effective emissivity of nonisothermal mixed pixel and its test
	Chen, LF ; Zhuang, JL ; Xu, XR ; Niu, Z ; Zhang, RH ; Xiang, YQ
刊名	CHINESE SCIENCE BULLETIN
	2000-05-01
卷号	45 期号:9 页码:788-795
关键词	Nonisothermal Mixed Pixel Component Effective Emissivity Multiple Scattering
文献子类	Article
英文摘要	Based 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.
WOS关键词	TEMPERATURE
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000087504300004
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/68275]
专题	中国科学院地理科学与资源研究所
通讯作者	Chen, LF
作者单位	1.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
推荐引用方式 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.