不同类型植被双向反射与偏振特性
发布时间：2019-01-26 20:55
【摘要】：针对当前植被反射与偏振特性研究不充分、植被电磁辐射传输过程解释不详细的问题,使用东北师范大学实验室多角度测试平台对不同类型植被(菜豆树与南洋杉)的高光谱信息、偏振信息及其多角度分布3个方面进行测量,并结合植被双向反射机制与偏振产生机制对测量结果进行分析。研究表明,不同植被的反射与偏振信息都与波长有关,并表现出明显的各向异性,其中反射比与偏振度呈现出相对变化特征。植被类型对偏振与反射信息具有一定的影响,表现为平展光滑型阔叶植被产生的偏振信息远大于针叶产生的偏振信息。该研究有助于深入了解植被与电磁波辐射过程,同时也说明双向反射信息与偏振信息相结合可为植被遥感提供额外有效的辅助信息。
[Abstract]:In view of the insufficient research on the characteristics of vegetation reflection and polarization and the lack of detailed explanation of the electromagnetic radiation transfer process of vegetation at present, The hyperspectral information, polarization information and multi-angle distribution of different types of vegetation (Phaseolus vulgaris and Cunninghamia chinensis) were measured by using a multi-angle test platform in the laboratory of Northeast normal University. The measurement results are analyzed by combining the bidirectional reflection mechanism and polarization generation mechanism of vegetation. The results show that the reflection and polarization information of different vegetation are related to wavelength and show obvious anisotropy. The reflectance ratio and the degree of polarization show relative variation characteristics. The type of vegetation has a certain influence on polarization and reflection information, which shows that the polarization information generated by smooth broad-leaved vegetation is much larger than that produced by needles. This study is helpful to understand the process of vegetation and electromagnetic wave radiation, and it also shows that the combination of bidirectional reflection information and polarization information can provide additional and effective supplementary information for vegetation remote sensing.
【作者单位】： 东北师范大学地理科学学院;
【基金】：国家自然科学基金(41401379)
【分类号】：Q948;TP79
，
本文编号：2415902
[Abstract]:In view of the insufficient research on the characteristics of vegetation reflection and polarization and the lack of detailed explanation of the electromagnetic radiation transfer process of vegetation at present, The hyperspectral information, polarization information and multi-angle distribution of different types of vegetation (Phaseolus vulgaris and Cunninghamia chinensis) were measured by using a multi-angle test platform in the laboratory of Northeast normal University. The measurement results are analyzed by combining the bidirectional reflection mechanism and polarization generation mechanism of vegetation. The results show that the reflection and polarization information of different vegetation are related to wavelength and show obvious anisotropy. The reflectance ratio and the degree of polarization show relative variation characteristics. The type of vegetation has a certain influence on polarization and reflection information, which shows that the polarization information generated by smooth broad-leaved vegetation is much larger than that produced by needles. This study is helpful to understand the process of vegetation and electromagnetic wave radiation, and it also shows that the combination of bidirectional reflection information and polarization information can provide additional and effective supplementary information for vegetation remote sensing.
【作者单位】： 东北师范大学地理科学学院;
【基金】：国家自然科学基金(41401379)
【分类号】：Q948;TP79
，
本文编号：2415902
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