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多角度偏振成像仪系统级偏振定标方法研究

System-Level Polarized Calibration Methods in Laboratory of Directional Polarization Camera

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摘要

系统级偏振定标是多角度偏振成像仪(Directional polarization camera, DPC)研制过程 中的关键环节,对于提高大气气溶胶和云相态等定量化探测应用具有重要意义。 结合矩阵光学和辐射度学理论,建立了多角度偏振成像仪偏振响应定标模型,对关键影响参量进行定标。采用大口径积分球参考 光源和分视场测量方法,消除了光楔平板对DPC三检偏通道视场非一致性的影响,实现了高频和低频相对透过率的高精度测量。 采用傅里叶级数的分析方法,建立全视场起偏度的测量模型,消除参考光源偏振方位角绝对位置引入的测量误差,实现光学系统 偏振特性的准确测量。采用可调偏振度光源和大口径积分球辐射源,开展了偏振定标精度的比对验证实验和精度分析。测试 结果表明,全视场偏振定标精度优于0.5%,自然光状态下的偏振定标精度优于0.05%,验证了宽视场偏振遥感器 偏振辐射响应定标模型的合理性,说明该系统级偏振定标方法可满足宽视场光学偏振遥感器的高精度偏振观测科学应用要求。

Abstract

System-level polarized calibration is an important link in the development of directional polarization camera(DPC), which is of great significance for improving quantitative detection applications such as atmospheric aerosols and cloud phases. The polarization response calibration model is established combining with matrix optics and radiation theories, and key impact parameters are calibrated. An integrating sphere reference light source with large aperture and sectional viewing field measurement is used to eliminate the influence of the optical wedge plate on the non-consistency of the field view of DPC three partial channel, and high precision measurements of the high and low frequency relative transmittances are achieved. By using the Fourier series analysis method, the measurement model of the polarization degree of full view is established, and the measurement error introduced by the polarization azimuth absolute position of the reference light source is eliminated, which guarantees the precise measurement of polarization degree. The variable polarization light source and integrating sphere radiation source with large aperture are used for the comparison and precision analysis, the DPC full view polarization calibration uncertainty is better than 0.5%, and the DPC measured polarization degree uncertainty under natural light is better than 0.05%, which confirms the precision and reasonability of polarization remote sensor with wide field of view polarization radiation response calibration model. This system-level polarized calibration method can meet the requirements of high-precision polarization observation scientific application of wide field optical polarization remote sensor.

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中图分类号:O436;TP79

DOI:10.3969/j.issn.1673-6141.2019.01.004

所属栏目:“高分五号卫星载荷研制”专辑

基金项目:Supported by National Natural Science Foundation of China(国家自然科学基金, 41605021), Natural Science Foundation of Anhui Province of China(安徽省自然科学基金,1708085QF131)

收稿日期:2018-10-08

修改稿日期:2018-12-16

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康晴:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室 安徽 合肥 230031
袁银麟:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室 安徽 合肥 230031
翁建文:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室 安徽 合肥 230031中国科学技术大学, 安徽 合肥 230026
丁蕾:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室 安徽 合肥 230031
李健军:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室 安徽 合肥 230031
吴浩宇:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室 安徽 合肥 230031
洪津:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室 安徽 合肥 230031
郑小兵:中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室 安徽 合肥 230031

联系人作者:康晴(qkang@aiofm.ac.cn)

备注:康晴(1988-),女,汉族,安徽蒙城人,博士,助理研究员, 主要从事光学遥感器偏振定标方法方面的研究。E-mail: qkang@aiofm.ac.cn

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引用该论文

KANG Qing,YUAN Yinlin,WENG Jianwen,DING Lei,LI Jianjun,WU Haoyu,HONG Jin,ZHENG Xiaobing. System-Level Polarized Calibration Methods in Laboratory of Directional Polarization Camera[J]. Journal of Atmospheric and Environmental Optics, 2019, 14(1): 36-48

康晴,袁银麟,翁建文,丁蕾,李健军,吴浩宇,洪津,郑小兵. 多角度偏振成像仪系统级偏振定标方法研究[J]. 大气与环境光学学报, 2019, 14(1): 36-48

被引情况

【1】翁建文,袁银麟,郑小兵,康晴,涂碧海,李健军,洪津. 星载偏振相机帧转移模糊效应校正方法研究. 光学学报, 2019, 39(12): 1228005--1

【2】李佳欣,赵鹏,方薇,宋尚香. 基于深度学习的多角度遥感影像云检测方法. 大气与环境光学学报, 2020, 15(5): 380-392

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