A spectral directional reflectance model of row crops
A spectral directional reflectance model of row crops
复制标题
行间作物的光谱定向反射率模型
DOI:
10.1016/j.rse.2009.09.018
复制
发表时间:
2010-02
影响因子:
13.5
通讯作者:
Liangfu Chen
中科院分区:
文献类型:
--
作者:
Feng Zhao;Huijie Zhao;Xinfa Gu;Wout Verhoef;Qiao Wang;Tao Yu;Qiang Liu;Huaguo Huang;Wenhan Qin;Liangfu Chen
A computationally efficient reflectance model for row planted canopies is developed in this paper through separating the contributions of incident direct and diffuse radiation scattered by row canopies. The row model allows calculating the reflectance spectrum in any given direction for the optical spectral region. The performance of the model is evaluated through comparisons with field measurements of winter wheat as well as with an established 3D computer simulation model. Especially the systematic comparisons with the computer simulation model demonstrate that the model can adequately simulate the characteristic distribution of directional reflectance factors of row canopies, which is shown in the polar map of reflectance as a high or low value stripe approximately parallel to the row orientation, besides the hotspot effect. Physical mechanisms causing the dynamics were proposed and supported by comparison studies. The features of reflectance distributions of row canopies, which are distinctively different from those of homogeneous canopy, imply that it is problematic to use one-dimensional radiation transfer model to interpret radiation data and estimate the structural or spectral parameters of row canopies from reflectance measurements. Finally, further improvements needed for the current model are briefly discussed.
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DOI:
10.1109/36.263779
发表时间:
1993-09
期刊:
IEEE Trans. Geosci. Remote. Sens.
影响因子:
--
作者:
S. Liang;A. Strahler
通讯作者:
S. Liang;A. Strahler
DOI:
10.1109/igarss.2003.1294765
发表时间:
2003-07
期刊:
IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477)
影响因子:
--
作者:
Tao Yu;G. Tian;Yonghong Lv;M. Legrand;Xingfa Gu;J. Hanocq;R. Bosseno
通讯作者:
Tao Yu;G. Tian;Yonghong Lv;M. Legrand;Xingfa Gu;J. Hanocq;R. Bosseno
DOI:
10.1016/0034-4257(85)90072-0
发表时间:
1984-02
期刊:
--
影响因子:
--
作者:
W. Verhoef
通讯作者:
W. Verhoef
影响因子:
6.2
作者:
A. Ganis
通讯作者:
A. Ganis
影响因子:
6.2
作者:
A. Bégué;J. Roujean;N. Hanan;S. Prince;M. Thawley;A. Huete;D. Tanré
通讯作者:
A. Bégué;J. Roujean;N. Hanan;S. Prince;M. Thawley;A. Huete;D. Tanré