垂直观测时水平粗糙地表偏振反射作用研究

doi:10.3321/j.issn:1001-9014.2009.02.017

CORC > 北京大学 > 地球与空间科学学院

	垂直观测时水平粗糙地表偏振反射作用研究; POLARIZATION REFLECTION EFFECT OF PLANE ROUGH SURFACE UNDER VERTICAL OBSERVATION
	吴太夏 ; 晏磊 ; 相云 ; 施健 ; 赵云升
刊名	红外与毫米波学报
	2009
关键词	遥感偏振成像光谱定量遥感 remote sensing polarization imaging spectra quantitative remote sensing
DOI	10.3321/j.issn:1001-9014.2009.02.017
英文摘要	在利用偏振遥感对地表目标或大气进行研究时,由于大气散射光相对地表反射具有更强的偏振特性,故常认为经地气系统反射回空间的太阳辐射偏振信息主要来源于大气,而在遥感反演时常忽略地表的偏振反射作用.这个结论是基于地面目标为漫反射体的假定,但事实上,在绝大多数情况下,地表并非朗伯体,在某些时候这种非朗伯体的地表偏振作用甚至超过大气的影响.本文从推导地表的偏振反射作用机理及偏振光谱解译模型出发,首次利用偏振成像光谱实验,证明了地表的偏振度在某些情况下甚至达到50%以上,说明地表的偏振作用对传感器的信号有时会有很大影响.该作用是进行定量遥感研究时不容忽视的一个重要因素.; When utilizing polarization remote sensing for earth observation, or atmosphere scattering, the polarization effect of atmosphere is always higher than the land surfaced. It is usually believed that the polarization effect of the atmosphere is the main information resource of the remote sensing sensor. Thus the land surfaced polarization is often ignored in remote sensing retrieval. This conclusion is based on the assumption that tire reflection of land objects is diffuse reflection. However, in most cases, land objects are not standard Lambertian. Sometimes tire polarization effect of those objects is stronger than the atmosphere. In this study, the reflection mechanism of tire land surface and the interpretation model of polarization spectrum were deduced. Our results show that the imaging spectrum experiment has the land Surface polarization effect which can even reach to 50% or more in some cases. The polarization signal of sensor will be greatly affected by the land surface. So the polarization effect of land surface is an important factor which call not be ignored during the study of quantitative remote sensing.; SCI(E); EI; 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; 02; 151-155; 28
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/178772]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	吴太夏,晏磊,相云,等. 垂直观测时水平粗糙地表偏振反射作用研究, POLARIZATION REFLECTION EFFECT OF PLANE ROUGH SURFACE UNDER VERTICAL OBSERVATION[J]. 红外与毫米波学报,2009.
APA	吴太夏,晏磊,相云,施健,&赵云升.(2009).垂直观测时水平粗糙地表偏振反射作用研究.红外与毫米波学报.
MLA	吴太夏,et al."垂直观测时水平粗糙地表偏振反射作用研究".红外与毫米波学报 (2009).