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

doi:10.3964/j.issn.1000-0593(2011)12-3423-06

CORC > 北京大学 > 地球与空间科学学院

	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; Influence of Surface Roughness on Degree of Polarization of Biotite Plagioclase Gneiss Varying with Viewing Angle
	相云 ; 晏磊 ; 赵云升 ; 勾志阳 ; 陈伟
刊名	光谱学与光谱分析
	2011
关键词	岩石表面粗糙度偏振度探测天顶角探测方位角 Rock Surface roughness Degree of polarization Viewing zenith Viewing azimuth
DOI	10.3964/j.issn.1000-0593(2011)12-3423-06
英文摘要	以黑云斜长片麻岩为例,探讨了表面粗糙度因子在350～2 500 nm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士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.; Polarized reflectance is influenced by such factors as its physical and chemical properties, the viewing geometry composed of light incident zenith, viewing zenith and viewing azimuth relative to light incidence, surface roughness and texture, surface density, detection wavelengths, polarization phase angle and so on. In the present paper, the influence of surface roughness on the degree of polarization (DOP) of biotite plagioclase gneiss varying with viewing angle was inquired and analyzed quantitatively. The polarized spectra were measured by ASD FS3 spectrometer on the goniometer located in Northeast Normal University. When the incident zenith angle was fixed at 50 degrees, it was showed that on the rock surfaces with different roughness, in the specular reflection direction, the DOP spectrum within 350 similar to 2 500 nm increased to the highest value first, and then began to decline varying with viewing zenith angle from 0 degrees to 80 degrees. The characterized band (520 +/- 10) nm was picked out for further analysis. The correlation analysis between the peak DOP value of zenith and surface roughness showed that they are in a power function relationship, with the regression equation: y=0.604x(-0.297), R(2)=0.985 4. The correlation model of the angle where the peak is in and the surface roughness is y=3.419 4x+51.584, y<90 degrees, R(2)=0.817 7. With the detecting azimuth farther away from 180 degrees azimuth where the maximum DOP exists, the DOP lowers gradually and tends to 0. In the detection azimuth 180 degrees, the correlation analysis between the peak values of DOP on the (520 +/- 10) nm band for five rocks and their surface roughness indicates a power function, with the regression equation being y=0.582 2x(-0.333), R(2)=0.984 3. F tests of the above regression models indicate that the peak value and its corresponding viewing angle correlate much with surface roughness. The study provides a theoretical base for polarization remote sensing, and impels the rock and city architecture discrimination and minerals mapping.; 国家自然科学基金; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000297899400057&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); EI; PubMed; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 0; 12; 3423-3428; 31
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/191676]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	相云,晏磊,赵云升,等. 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, Influence of Surface Roughness on Degree of Polarization of Biotite Plagioclase Gneiss Varying with Viewing Angle[J]. 光谱学与光谱分析,2011.
APA	相云,晏磊,赵云升,勾志阳,&陈伟.(2011).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.光谱学与光谱分析.
MLA	相云,et al."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".光谱学与光谱分析 (2011).