基于瑞利散射理论, 对天空光偏振分布模式进行了仿真。利用图像式全天空偏振模式测试系统对东海海域的天空光偏振分布模式进行了测试。提出了一种利用偏振方位角信息判断子午线的方法。研究结果表明, 当太阳高度角大于85°或低于25°时, 可利用偏振方位角定位子午线方向。该子午线方向与理论仿真结果一致。

Based on the Rayleigh scattering theory, the distribution pattern of the sky light polarization is simulated. The distribution pattern of the sky light polarization in the East China Sea is tested by the photographic full-sky polarization pattern testing system. A method for determining the meridian by the polarization azimuthal angle information is proposed. The research results show that, when the solar altitude angle is larger than 85° or less than 25°, the meridian direction can be positioned by means of the polarization azimuthal angle. The meridian direction is consistent with the theoretical simulation result.