高精度空间振幅调制光谱偏振探测技术研究

项目名称： 高精度空间振幅调制光谱偏振探测技术研究

项目编号： No.U1331111

项目类型： 联合基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 李双

作者单位： 中国科学院合肥物质科学研究院

项目金额： 54万元

中文摘要： 空间振幅调制光谱偏振探测技术利用光劈延迟器将偏振信息调制在与光谱色散方向相垂直的空间方向上，“空间维”用于偏振测量，“光谱维”用于光谱测量。这使得偏振信息获取与光谱信息获取相互独立，避免了光谱强度调制方法中偏振信息获取对光谱分辨率的依赖，实现光谱测量和偏振测量同时优化。此技术单次测量即可获取全部光谱偏振信息，瞬态目标或仪器与目标存在相对运动的情形都能实现高精度偏振测量。通过工程化设计可实现结构紧凑，体积小巧，测量精度高的光谱偏振探测设备，将为我国行星空间探测提供一种新的测量手段。 在课题研究过程中采用理论分析与实验相结合的方法，首先进行高精度空间振幅调制光谱偏振探测技术的机理研究，利用计算机模拟分析来确定关键参数并评估误差来源；在机理研究的基础上搭建实验测量装置开展原理性实验研究，为高精度空间调制光谱偏振探测技术的空间实际应用奠定基础。

中文关键词： 空间振幅调制；偏振测量；光谱测量；遥感；

英文摘要： The approach explored in this paper is to encode the polarization information at each wavelength along the spatial dimension of a two-dimensional data array using static, robust optical wedge retarder components, a “spectral” dimension for the spectroscopy and a “spatial” dimension for the polarimetry. The amplitude modulation of the encoding of the polarization information is independent of the choice of spectral resolution. The two aspects of the measurement, the spectroscopy and the polarimetry, may be optimized independently. By acquiring full polarimetric information in a single observation, we simplify polarimetry of transient sources and in situations where the instrument and target are in relative motion. The robustness and simplicity of the approach, coupled with its potential for high sensitivity, and applicability over a wide wavelength range, is likely to prove useful for applications in planetary exploration in space. The researches carry through the combination of theory analysis and experiment. Firstly, the research focus on the principle of Spatial Amplitude Modulation Spectropolarimetry, the key parameter is being obtained through the computer simulation and optimization. And then the experimental hardware of it is constructed based on the principle analysis, whose characters, such as the Muell

英文关键词： spatial amplitude modulate；polarimetry；spectroscopy；remote sensing；