典型地面目标热辐射偏振特性研究

项目名称： 典型地面目标热辐射偏振特性研究

项目编号： No.41271350

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 赵云升

作者单位： 东北师范大学

项目金额： 75万元

中文摘要： 来自非朗伯体的发射辐射，不但具有三维空间分布特征，还具有偏振性。传统的热红外遥感主要获取地物自身发射的二维空间分布特征，未涉及目标地物发射辐射的偏振性。本项研究旨在通过对地物的热红外偏振机理探讨，测量植被、水体、岩矿、土壤以及冰雪五大类典型地面目标的热红外偏振特性，并通过正交试验设计，以分形、小波理论、光谱分析技术定量分析探测天顶角、方位角、波段、地物类型以及交互作用对其热辐射偏振特性的影响，以便从中得出某些带有共性的规律。本课题的研究是前四个国家自然科学基金研究的延伸与拓展。其研究思路、方法、成果与经验对新课题研究有非常重要的借鉴作用；以前研究的均是典型地面目标的反射偏振特性，而新课题研究的是典型地面目标的自身发射偏振特性；波长从0.4-2.5μm，拓展至8-14μm。本研究为热红外偏振遥感信息的开发和应用，地物的识别、分类、传感器的研制提供了依据，具有重要的理论意义和广阔的应用前景。

中文关键词： 热红外遥感；多角度遥感；偏振遥感；发射辐射；信息提取

英文摘要： The non-Lambertian emission of radiation not only has the three-dimensional spatial distribution features but also is of polarization. Traditional thermal infrared remote sensing mainly gains the two-dimensional spatial distribution features from the surface objects and the polarization of the emitted radiation of the target surface objects is not involved. This study, through investigating the thermal infrared polarization mechanism of the surface objects, is aimed to measure the thermal infrared polarization features of five main typical categories of surface objects: vegetation, water, rock and mineral, soil and snow, and to quantitatively analyze and probe the influence of zenith angle, azimuth, band, type of surface objects and their interaction on the thermal radiation polarization features of these five categories by orthogonal experimental design, fractal, wavelet theory and spectroscopy so as to draw some common regular patterns. This research is the extension and expansion of the previous four National Natural Science Foundations. The research ideas, methods, results and experience of the previous researches are of significant reference; the previous researches concern the reflection polarization characteristics of the typical surface objects, while this new one focuses on the emission polarization cha

英文关键词： hermal infrared remote sensing；multi-angle remote sensing；polarization remote sensing；emitted radiation；information extraction