黄海海域天空光偏振分布仿真与测试

发布时间：2018-05-08 00:40

本文选题：大气光学 + 偏振分布模式　；参考：《光学学报》2017年10期

【摘要】：研究了黄海海域的天空光偏振分布模式,分析了海洋上空日光和月光的偏振特性分布规律以及云层对其产生的影响。基于瑞利散射理论对日光和月光的偏振分布模式进行仿真,利用图像式全天空偏振模式测试系统对黄海海域的天空偏振模式进行测试,分别将日光和月光的偏振测试结果与对应的理论仿真结果进行对比,并重点分析子午线方向和中性点的异同。结果表明:测试得到的日光和月光的子午线方向与对应的理论模式基本一致;测试得到日光的偏振模式中性点与理论仿真结果基本相同,但是测试得到月光的偏振模式中性点与理论仿真结果明显不同,在民用暮光阶段,天空光的偏振模式会受到月光和日光的双重影响。此外,云层会影响偏振方位角和偏振度的观测,致使测试仪器目前无法识别部分区域的偏振分布结果。
[Abstract]:In this paper, the polarization distribution pattern of sky light in Huang Hai sea area is studied, and the distribution law of the polarization characteristics of sunlight and moonlight over the ocean and the influence of clouds on it are analyzed. Based on Rayleigh scattering theory, the polarization distribution mode of sunlight and moonlight is simulated, and the sky polarization mode of Huang Hai sea area is tested by using the image all sky polarization mode test system. The polarization measurement results of sunlight and moonlight are compared with corresponding theoretical simulation results, and the similarities and differences of meridian direction and neutral point are analyzed. The results show that the measured meridional direction of sunlight and moonlight is basically consistent with the corresponding theoretical model, and the neutral point of polarization mode of sunlight is basically the same as that of theoretical simulation. However, the polarization mode neutral point of the measured moonlight is obviously different from the theoretical simulation results. In the civil twilight phase, the polarization mode of sky light will be affected by both moonlight and sunlight. In addition, the cloud will affect the measurement of polarization azimuth and degree of polarization, which makes the measurement instrument unable to identify the polarization distribution in some regions.
【作者单位】：大连理工大学精密与特种加工教育部重点实验室;大连理工大学辽宁省微纳技术与系统重点实验室;大连海事大学环境科学与工程学院;
【基金】：国家自然科学基金(51675076)
【分类号】：O436.3;P427

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