Knowledge Resource Center for Ecological Environment in Arid Area
Multi-angle data from CHRIS/Proba for determination of canopy structure in desert rangelands | |
Chopping, M; Laliberte, A; Rango, A | |
通讯作者 | Chopping, M |
会议名称 | IEEE International Geoscience and Remote Sensing Symposium |
会议日期 | SEP 20-24, 2004 |
会议地点 | Anchorage, AK |
英文摘要 | Multi-angle spectral radiance images from the Compact High Resolution Imaging Spectrometer (CHRIS) on the European Space Agency's Proba satellite were acquired over desert grasslands in the USDA, ARS Jornada Experimental Range near Las Cruces, New Mexico, USA. The data were used to obtain multi-an-le ratio images and to effect spatial bidirectional reflectance distribution function (BRDF) model inversions. The results show that there is canopy 3-D structure information observable in ratio images but physical interpretation is difficult. Inversion of a simple non-linear model for three canopy parameters resulted in low root-mean-square error values. The difficulty of decomposing the effects of brightness and reflectance anisotropy (BRDF shape) in complex desert shrub landscapes with varying soil-understory characteristics was overcome by allowing linear sealing of the parameters of the soil-understory sub-model as It function of near-nadir 631 nm reflectance. The retrieved parameter maps show a high spatial correlation between width and height but a different distribution for density. Examination of high resolution panchromatic and multi-spectral imagery shows that there are strong relationships between the retrieved parameters and canopy characteristics although further validation is required. |
英文关键词 | canopy structure multi-angle BRDF model inversion |
来源出版物 | IGARSS 2004: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM PROCEEDINGS, VOLS 1-7 |
出版年 | 2004 |
页码 | 4742-4745 |
ISBN | 0-7803-8742-2 |
出版者 | IEEE |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | USA |
收录类别 | CPCI-S |
WOS记录号 | WOS:000227006901255 |
WOS类目 | Geosciences, Multidisciplinary ; Instruments & Instrumentation ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS研究方向 | Geology ; Instruments & Instrumentation ; Remote Sensing ; Imaging Science & Photographic Technology |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/294922 |
作者单位 | (1)Montclair State Univ, Montclair, NJ 07043 USA |
推荐引用方式 GB/T 7714 | Chopping, M,Laliberte, A,Rango, A. Multi-angle data from CHRIS/Proba for determination of canopy structure in desert rangelands[C]:IEEE,2004:4742-4745. |
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