| 光谱学与光谱分析 |
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| Analysis of Influencing Factors of Snow Hyperspectral Polarized Reflections |
| SUN Zhong-qiu, ZHAO Yun-sheng*, YAN Guo-qian, NING Yan-ling, ZHONG Gui-xin |
| College of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024, China |
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Abstract Due to the need of snow monitoring and the impact of the global change on the snow, on the basis of the traditional research on snow, starting from the perspective of multi-angle polarized reflectance, we analyzed the influencing factors of snow from the incidence zenith angles, the detection zenith angles, the detection azimuth angles, polarized angles, the density of snow, the degree of pollution, and the background of the undersurface. It was found that these factors affected the spectral reflectance values of the snow, and the effect of some factors on the polarization hyperspectral reflectance observation is more evident than in the vertical observation. Among these influencing factors, the pollution of snow leads to an obvious change in the snow reflectance spectrum curve, while other factors have little effect on the shape of the snow reflectance spectrum curve and mainly impact the reflection ratio of the snow. Snow reflectance polarization information has not only important theoretical significance, but also wide application prospect, and provides new ideas and methods for the quantitative research on snow using the remote sensing technology.
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Received: 2009-02-20
Accepted: 2009-05-22
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Corresponding Authors:
ZHAO Yun-sheng
E-mail: zhaoys975@nenu.edu.cn
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