分时偏振光谱测量系统的起偏效应校正

发布时间：2018-04-28 16:37

本文选题：偏振遥感 + 偏振光谱　；参考：《光学精密工程》2017年02期

【摘要】：针对实验室偏振光谱测量系统短波红外起偏效应大、测量偏差大的问题,建立了系统目标斯托克斯校正模型,提出了该模型中相关系数的测量方法,从而实现了系统偏振效应的精密校正。首先分析了实验室常用的低成本分时偏振光谱测量系统存在的主要问题及起偏效应的来源。然后根据偏振传输理论,将系统中起偏效应较大的波谱仪等效为检偏系统,建立了目标偏振信息的校正模型,并通过与理想模型的对比验证了模型的正确性。最后针对本测量设备,为提高校正系数的测量精度,在解析法的基础上提出了一种更精确的拟合法。实验结果表明,本方法的校正精度高于0.5%,满足实验室中对目标偏振信息处理的精度要求,对偏振光谱测量系统的研制和标定具有指导意义。
[Abstract]:Aiming at the problem of large short-wave infrared polarization effect and large measurement deviation in the polarizing spectrum measurement system in laboratory, a Stokes correction model of the system target is established, and the measurement method of correlation coefficient in the model is presented. Thus the precision correction of the polarization effect of the system is realized. In this paper, the main problems and the source of the polarization effect in the low cost time-sharing polarizing spectrum measurement system are analyzed. Then, according to the polarization transmission theory, the wave spectrometer with large polarization effect in the system is equivalent to the polarization detection system, and the correction model of the polarization information of the target is established, and the correctness of the model is verified by comparison with the ideal model. Finally, in order to improve the measuring accuracy of the correction coefficient, a more accurate fitting method is proposed based on the analytical method. The experimental results show that the correction accuracy of this method is higher than 0.5, which can meet the requirements of the precision of the target polarization information processing in the laboratory. It is of guiding significance for the development and calibration of the polarizing spectrum measurement system.
【作者单位】：中国科学院长春光学精密机械与物理研究所;中国科学院大学;
【基金】：国家863高技术研究发展计划资助项目(No.2011AA12A103) 国家自然科学基金青年基金资助项目(No.61505199)
【分类号】：O436.3

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