| 空间调制偏振光谱测量定标方法 |
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| 引用本文： | 李双,袁齐,龚平.空间调制偏振光谱测量定标方法[J].红外与激光工程,2016,45(11):1113002-1113002(5). |
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| 作者姓名： | 李双 袁齐 龚平 |
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| 作者单位： | 1.中国科学院安徽光学精密机械研究所 光学遥感中心,安徽 合肥 230031; |
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| 基金项目： | 国家自然科学基金委员会-中国科学院天文联合基金（U1331111） |
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| 摘 要： | 研究了基于四分之一波片-复合双折射光楔-偏振片空间调制结构的定标方法，并给出了相应的光谱、辐射定标方程。基于结构的偏振调制原理，提出了线性最小二乘偏振定标方法。仿真分析表明，该定标方法对于调制结构偏振调制系数的定标精度要比传统的四点法更高，最小二乘定标法得到的调制系数与真实调制系数间的偏差波动在整个调制周期内约为210-4，且呈随机分布。
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| 关 键 词： | 空间调制 偏振光谱仪 偏振定标 最小二乘法 |
| 收稿时间： | 2016-03-05 |
Calibration method of spatial modulation spectropolarimetry |
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| Affiliation: | 1.Center of Optical Remote Sensing,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China;2.Key Laboratory of Optical Calibration and Characterization,Chinese Academy of Sciences,Hefei 230031,China;3.University of Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | Calibration method and process for spatial modulating optical structure composed of quarter wave plate, composite birefringent wedge and polarizer was studied, and the calibrating equations of spectrum and radiation were presented. Based on the polarization principle of spatial modulation, linear least square method for calibration of polarization was provided. By simulation analysis, it is indicated that calibrating accuracy of linear least square method is higher than that of standard fou-point method, the modulating coefficient deviation of linear least square method has the maximum of about 210-4, and moreover, distributes stochastically in the modulating period. |
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