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| 表面粗糙度对黑云斜长片麻岩不同探测角偏振度波谱影响研究 | |
| 作者姓名： | Xiang Y Yan L Zhao YS Gou ZY Chen W |
| 作者单位： | 1. 北京大学地球与空间科学学院空间信息集成与3S工程应用北京市重点实验室,北京100871;河北省气象科学研究所,河北省气象与生态环境重点实验室,河北石家庄050021 2. 北京大学地球与空间科学学院空间信息集成与3S工程应用北京市重点实验室,北京,100871 3. 东北师范大学城市与环境科学学院,吉林长春,130024 |
| 基金项目： | 国家自然科学基金项目(40572167,60808035和60971086)资助 |
| 摘 要： | 以黑云斜长片麻岩为例,探讨了表面粗糙度因子在350～2 500nm波段对岩石不同天顶角及方位角偏振度探测的影响,并在特征波段进行了定量分析。表明不同粗糙度的岩石表面,入射天顶角一定时,在镜面反射方位,偏振度随探测天顶角先是上升,到达最高值后又开始下降。(520±10)nm波段的偏振度在探测天顶角方向达到的最大峰值与表面粗糙度进行相关分析,发现他们呈幂函数关系。回归方程为:y=0.604x-0.297,可决系数R2为0.985 4。峰值所在天顶角度与表面粗糙度相关模型为,y=3.419 4x+51.584,y<90°,模型可决系数R2为0.817 7。偏振度随探测方位角变化的规律为以180°方位时偏振度最大,向两侧随探测方位离180°越远逐渐越低,并趋于0。(520±10)nm波段的偏振度在探测方位角180°方向达到的最大峰值与表面粗糙度进行相关分析,发现他们呈幂函数关系。回归方程为:y=0.582 2x-0.333,可决系数R2为0.984 3。对以上回归模型进行F检验,发现偏振度峰值及所对应角度与粗糙度之间存在显著的相关关系。 |
| 关 键 词： | 岩石 表面粗糙度 偏振度 探测天顶角 探测方位角 |
Influence of surface roughness on degree of polarization of biotite plagioclase gneiss varying with viewing angle |
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| Xiang Y,Yan L,Zhao YS,Gou ZY,Chen W.Influence of surface roughness on degree of polarization of biotite plagioclase gneiss varying with viewing angle[J].Spectroscopy and Spectral Analysis,2011,31(12):3423-3428. | |
| Authors: | Xiang Yun Yan Lei Zhao Yun-sheng Gou Zhi-yang Chen Wei |
| Institution: | XIANG Yun1,2,YAN Lei1,ZHAO Yun-sheng3,GOU Zhi-ya ng1,CHEN Wei1 1.Beijing Key Lab of Spatial Information Integration & Its Applications,Peking University,Beijing 100871,China 2.Hebei Meteorological Institute & Hebei Key Lab of Meteorology and Eco-enviro nment,Shijiazhuang 050021,China 3.College of Urban and Environmental Science,Northeast Normal University,Chan gchun 130024,China |
| Abstract: | Polarized reflectance is influenced by such factors as its physical and chemical properties,the viewing geometry com-posed of light incident zenith,viewing zenith and viewing azimuth relative to light incidence,surface roughness and texture,sur-face density,detection wavelengths,polarization phase angle and so on.In the present paper,the influence of surface roughnesson the degree of polarization(DOP)of biotite plagioclase gneiss varying with viewing angle was inquired and analyzed quantita-tively.The polar... |
| Keywords: | Rock Surface roughness Degree of polarization Viewing zenith Viewing azimuth |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ | |