Study on Multi-Angular Polarized Spectrum Characteristics of Leaf Based on Some Indoor Experimental Data
MENG Xia, XIE Dong-hui*, WANG Yan, JIA Ying-fang, YAN Guang-jian
State Key Laboratory of Remote Sensing Science, Research Center for Remote Sensing and GIS, and School of Geography, Beijing Normal University, Beijing 100875, China
Abstract：In the present study, we acquired multi-angular polarized spectrum of three kinds of leaves with different surface structures, and calculated the multi-angular spectral degree of polarization DOP based on Stokes parameters to explore its variation tendency with wavelength and the relationship between the leaf polarized reflectance and its physiological parameters and the relative observational geometric condition. The results show that although the spectral degree of polarization of the 3 kinds of leaves has obvious differences in value because of the leaf surface structures, the general trend of the DOP curve keeps consistent, and this trend could be explained by analyzing the properties of both specular and diffuse components of the leaf reflectance. The peak value of the DOP appears in the specular direction of the principal plane, and grows with the increase in the incident zenith angle. The analysis of the data demonstrates that compared to the other two experimental bands, the near infrared band shows a better discrimination in showing the relationship between DOP and the observational geometric configuration for all the three kinds of leaves, but the value of the DOP is smaller. Considering the effect of variation in chlorophyll content, DOP of the red band has more stable value than the near infrared band, whereas the water content has barely influence in both of the bands.
Key words：Plant leaf;Degree of polarization;Stokes parameters;Multi-angle;Physiological parameters
孟 夏，谢东辉*，汪 艳，贾颖芳，阎广建 . 叶片多角度偏振光谱特性影响因素的实验研究 [J]. 光谱学与光谱分析, 2014, 34(03): 619-624.
MENG Xia, XIE Dong-hui*, WANG Yan, JIA Ying-fang, YAN Guang-jian . Study on Multi-Angular Polarized Spectrum Characteristics of Leaf Based on Some Indoor Experimental Data . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(03): 619-624.
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