粒子湍流介质对太阳光退相干性质影响研究

项目名称： 粒子湍流介质对太阳光退相干性质影响研究

项目编号： No.11504383

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 陈斐楠

作者单位： 中国科学院合肥物质科学研究院

项目金额： 20万元

中文摘要： 将太阳光能量和其独有的光学特征与性质用于能源获取、导航定位、目标检测等方面是国际上极为关注的前沿研究。目前在这些研究中所遇到的困难主要集中在对阳光的相干度及偏振性质的利用受到大气条件的很大限制。造成这些实际问题的主要原因是描述太阳光相干性质的理论模型没有与大气条件相关联，而粒子湍流介质导致的球面光源退相干物理机制以及太阳光光学参量精细结构的描述是完善该模型的关键环节。针对这一情况，本项目深入探究：（1）从阳光辐射相干度分布入手，深入探讨太阳光高阶统计性质，进一步从多参量调制角度明确湍流强度和悬浮粒子散射及太阳光性质间的关联机制，最终构建包含环境干扰因素的阳光相干度变化理论模型，并以此为基础深入研究偏振度分布等精细结构的物理表征；（2）通过与大气参数测量的同步实验获得阳光相干度、大气偏振模式分布与大气条件变化之间的定量关系，利用实验数据分析不断完善理论模型并为相关应用技术提供参考。

中文关键词： 光散射；相干偏振性质；大气湍流；大气悬浮物

英文摘要： The use of solar energy and the optical characteristics in new energy development, polarization navigation, target detection and identification is of great concern to the international community. At present, difficulties encountered in these studies focused on the use of sunlight of coherence and polarization properties subject to weather conditions great limited. The main cause of these problems is there is no relationship between coherence properties of sunlight and atmospheric parameters. The mechanism of influence of turbulence media containing particles to the degeneration of coherence of spherical source is the key point of the problem. In response to this situation, the deep exploration of the project include: (1) From the degree of coherence of sunlight, make deep discussions about its high order properties, at last, the theoretical model of sunlight coherent variation factors include environmental interference will be constructed as a basis for further study of the physical characterization of the structure of degree of polarization and other parameters. (2) The relationship between the coherence of the sunlight and atmospheric polarization model and weather conditions will be revealed by synchronizing experiments. The data analysis from the experiments will be helpful for the improvement of theoretical model and related technology.

英文关键词： Optical scattering;coherence polarization property;atmosphere turbulence;aerosol