基于实测数据的月壤辐射和散射特性影响因素研究

发布时间：2018-07-09 17:56

本文选题：时空归一化亮温差值 + 微波发射率　；参考：《华中科技大学》2015年硕士论文

【摘要】：月壤层含有丰富氦-3元素,对月壤的研究有利于更清楚的了解月壤中氦-3等资源的含量,对以后月球资源的开发和利用具有重要意义。要对月壤特性进行深入研究,首先必须了解影响月壤辐射与散射特性的因素,对各种影响因素的研究有助于精确建立模型。本文使用“嫦娥一号”采集的亮温数据、美国月球勘测轨道飞行器(LRO)采集的数据对月壤的辐射和散射特性进行研究。首先介绍了“嫦娥一号”、“嫦娥二号”微波辐射计和LRO相关仪器的探测原理、数据内容和处理数据的基本方法;其次重点阐述了月壤辐射和散射特性的提取方法,介绍了各个影响因素的提取方法,推导了散射系数与4个Stokes参数之间的关系;最后选取了不同的地形区域对时空归一化亮温差值和微波发射率与各个影响因素进行相关性分析,得出影响辐射特性的主要因素,将时空归一化亮温差值与微波发射率进行了相关性分析,解释了微波发射率与时空归一化亮温差值不同的可能原因,选取了不同地形的区域的圆极化率、同向极化参数、反向极化参数和极化度与各因素进行相关性分析,得出影响散射特性的主要因素,对微波发射率与散射系数的关系进行了预测,得出可能存在的关系。
[Abstract]:The lunar soil layer contains rich helium -3 elements. The study of lunar soil is helpful for a clearer understanding of the content of helium and -3 in the lunar soil. It is of great significance for the development and utilization of the lunar resources. This paper helps to establish the model accurately. This paper uses the brightness temperature data collected by "Chang'e 1" and the data collected by the American Lunar Reconnaissance Orbiter (LRO) to study the radiation and scattering characteristics of lunar soil. First, the detection principle of "Chang'e I", "Chang'e two" microwave radiometer and LRO related instruments, data content and location are introduced. The basic method of the data is discussed. Secondly, the extraction method of the radiant and scattering characteristics of lunar soil is expounded, the extraction method of each influence factor is introduced, the relation between the scattering coefficient and the 4 Stokes parameters is deduced. Finally, the light temperature difference value of the spatio-temporal normalization, the microwave emission rate and the influence factors of the different terrain regions are selected. The correlation analysis shows the main factors affecting the radiation characteristics. The correlation analysis of the brightness temperature difference between the space-time normalization and the microwave emission rate is carried out. The possible reasons for the difference between the microwave emissivity and the space-time normalization of the brightness temperature difference are explained, and the circular polarizability, the same direction polarization parameters, the reverse polarization parameters and the polarization of the regions of different terrain are selected. The correlation analysis between the degree and the factors is carried out, and the main factors affecting the scattering characteristics are obtained. The relationship between the microwave emission rate and the scattering coefficient is predicted, and the possible relationship is obtained.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P184.5

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