干旱区生态环境知识资源中心(Arid): Comparison of Two Semi-Empirical BRDF algorithms using SPOT/VGT

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DOI	10.7780/kjrs.2013.29.3.3
	Comparison of Two Semi-Empirical BRDF algorithms using SPOT/VGT
	Lee, Chang Suk; Han, Kyung-Soo
通讯作者	Han, KS
来源期刊	KOREAN JOURNAL OF REMOTE SENSING
ISSN	1225-6161
EISSN	2287-9307
出版年	2013
卷号	29 期号:3 页码:307-314
英文摘要	The Bidirectional Reflectance Distribution (BRD) effect is critical to interpret the surface information using remotely sensed data. This effect was caused by geometric relationship between sensor, target and solar that is inevitable effect for data of optical sensor. To remove the BRD effect, semi-empirical BRDF models are widely used. It is faster to calculate than physical models and demanded less observation than empirical models. In this study, Ross-Li kernel and Roujean kernel were used respectively in National Aeronautics and Space Administration (NASA) and European Organization for the Exploitation of Meteorological Satellites (EUMETSAT) that are used to compare each other. The semi-empirical model consists of three parts which are isotropic, geometric and volumetric scattering. Each part contained physical kernel and empirical coefficients that were calculated by statistical method. Red and NIR channel of SPOT/VEGETATION product were used to compute Nadir BRDF Adjusted Reflectance (NBAR) over East Asia area from January 2009 to December 2009. S1 product was provided by VITO that was conducted atmospheric correction using Simplified Method of Atmospheric Correction (SMAC). NBAR was calculated using corrected reflectance of red and NIR. Previous study has revealed that Roujean geometric kernel had unphysical values in large zenith angles. We extracted empirical coefficients in three parts and normalized reflectance to compare both BRDF models. Two points located forest in Korea peninsular and bare land in Gobi desert were selected for comparison. As results of time series analysis, both models showed similar reflectance change pattern and reasonable values. Whereas in case of empirical coefficients comparison, different changes pattern of values were showed in isotropic coefficients.
英文关键词	BRDF SPOT/VGT surface reflectance
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	ESCI
WOS记录号	WOS:000410219000003
WOS关键词	VEGETATION/SPOT ; NORMALIZATION ; VALIDATION ; SURFACE ; MODELS
WOS类目	Remote Sensing
WOS研究方向	Remote Sensing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/330484
作者单位	[Lee, Chang Suk; Han, Kyung-Soo] Pukyong Natl Univ, Dept Spatial Informat Engn, Busan, South Korea
推荐引用方式 GB/T 7714	Lee, Chang Suk,Han, Kyung-Soo. Comparison of Two Semi-Empirical BRDF algorithms using SPOT/VGT[J],2013,29(3):307-314.
APA	Lee, Chang Suk,&Han, Kyung-Soo.(2013).Comparison of Two Semi-Empirical BRDF algorithms using SPOT/VGT.KOREAN JOURNAL OF REMOTE SENSING,29(3),307-314.
MLA	Lee, Chang Suk,et al."Comparison of Two Semi-Empirical BRDF algorithms using SPOT/VGT".KOREAN JOURNAL OF REMOTE SENSING 29.3(2013):307-314.