LAI Retrieval Using PROSAIL Model and Optimal Angle Combination of Multi-Angular Data in Wheat

doi:10.1109/JSTARS.2013.2261474

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 会议论文

	LAI Retrieval Using PROSAIL Model and Optimal Angle Combination of Multi-Angular Data in Wheat
	Wang, Lijuan 1; Dong, Taifeng 1; Zhang, Guimin 2; Niu, Zheng 1
	2013
会议日期	JUL 22-27, 2012
会议地点	Munich, GERMANY
关键词	Leaf area index (LAI) lookup table (LUT) multi-angular data PROSAIL model
卷号	6
期号	3
DOI	10.1109/JSTARS.2013.2261474
页码	1730-1736
英文摘要	Leaf area index (LAI) is a crucial parameter of vegetation structure in ecosystem, climate, and crop yield models. The radiative transfer model (RTM) inversion method is useful for estimating LAI, due to its well-founded physical basis and independence of vegetation types. Multi-angular observations can provide more structure information of vegetation, and therefore the RTM inversion incorporating with multi-angular data may have the potential to estimate LAI much more accurately. In this paper, the performances of LAI retrieval with several angle combinations were explored using the PROSAIL model and multi-angular data based on a lookup table (LUT) method. A high accuracy (R-2 = 0.9371 and RMSE = 0.08914) was obtained with the optimal angle combination (-20 degrees, -10 degrees, 0 degrees, 10 degrees). Results demonstrated that the near-nadir angle and the back-scattering angles in the NIR band had the better capabilities on LAI estimation, so it was necessary to determine the optimal angle combination when dealing with the multi-angular data. It provided the opportunity to improve the retrieval accuracy of LAI and some help to the angle set of the new multi-angle remote sensing sensors.
会议录	IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
会议录出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
会议录出版地	PISCATAWAY
语种	英语
WOS研究方向	Engineering ; Physical Geography ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000320871800070
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4787]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	1.Chinese Acad Sci, State Key Lab Remote Sensing Sci, Inst Remote Sensing & Digital Earth; 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech
推荐引用方式 GB/T 7714	Wang, Lijuan,Dong, Taifeng,Zhang, Guimin,et al. LAI Retrieval Using PROSAIL Model and Optimal Angle Combination of Multi-Angular Data in Wheat[C]. 见:. Munich, GERMANY. JUL 22-27, 2012.