| 基于室内光谱测量的玉米单叶偏振与二向性反射关系研究 |
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| 引用本文： | 宋开山,张柏,赵云升,王宗明,杜佳.基于室内光谱测量的玉米单叶偏振与二向性反射关系研究[J].遥感学报,2007,11(5):632-640. |
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| 作者姓名： | 宋开山 张柏 赵云升 王宗明 杜佳 |
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| 作者单位： | 1. 中国科学院,东北地理与农业生态研究所,长春,130012
2. 东北师范大学,长春,130024 |
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| 基金项目： | The authors would like to thank the Fund of the Changchun Jingyuetan Remote Sensing Test Station, CAS. This work could not have been done without the financial support. The author would like to give thanks to Dr. Zhang Yuanzhi from Helsinki University of Technology for several constructive discussions and helpful comments. |
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| 摘 要： | 本研究利用多角度光度计实测了玉米单叶的偏振反射比与二向反射比数据。该光度计能够在不同的观测天顶角、入射天顶角和方位角下测量目标物的偏振反射和二向反射,获得地物目标在2π空间的多角度观测数据。通过分析实测的偏振反射和二向反射数据,得出了玉米单叶的偏振反射与二向反射之间关系密切,最大与最小偏振反射比之和的平均数约等于同等观测条件下玉米叶片的二向反射比。该研究成果为植被遥感监测做出了一种新的尝试,并且对偏振光遥感、多角度遥感的深入研究与应用提供了依据。
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| 关 键 词： | 偏振光 偏振反射比 二向反射比 玉米单叶 |
| 文章编号： | 1007-4619（2007）05-0632-09 |
| 修稿时间： | 2006-08-10 |
Study of Polarized Reflectance of Corn Leaf and Its Relationship to Laboratory Measurements of Bi-directionaI Reflectance |
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| SONG Kai-shan,ZHANG Bai,ZHAO Yun-shcng,WANG Zong-ming and DU Jia.Study of Polarized Reflectance of Corn Leaf and Its Relationship to Laboratory Measurements of Bi-directionaI Reflectance[J].Journal of Remote Sensing,2007,11(5):632-640. |
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| Authors: | SONG Kai-shan ZHANG Bai ZHAO Yun-shcng WANG Zong-ming and DU Jia |
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| Institution: | 1. Northeast Institute of Geography and Agricultural Ecology, Weishan Road 3195, Changchun 130012, China; 2. Department of Geography, Northeast Normal University, Renmin Street 316, Changchun 130024, China |
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| Abstract: | Polarized and bi-directional reflectance of corn leaves from northeast China were collected with multi-angle reflectance detection instrument in the laboratory.This instrument has the ability to measure polarized reflectance and bi-directional reflectance of targets at various viewing zenith angles,light incidence zenith angles and azimuth angles.We analyzed the relationship between polarized and bi-directional reflectance according to the geometric characters listed above,and found that bi-directional reflectance is approximate half the sum of maximum and minimum polarized reflectance.The relationship between bi-directional and polarized reflectance has a direct relation to the sensor's viewing geometry.This study describes a new method for vegetation remote sensing detection and monitoring,and also provides a theoretical basis for further research on the relationship between polarized reflectance and bi-directional reflectance for remote sensing technology. |
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| Keywords: | polarized light polarized reflectance bi-directional reflectance corn leaf |
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