水体偏振特性的室内实验研究

RESEARCH OF WATER LEAVING RADIANCE POLARIZATION WITH LABORATORY MEASURED DATA

在偏振特性理论分析和经验总结的基础上,对水面上偏振测量试验的设计和测量方法提出了新的思路,并对已知质量浓度铜绿微囊藻溶液和泥沙悬浊液进行测量,以获得水中叶绿素、沉淀物质量浓度和观测方位变化对偏振离水辐射信息的影响机制.发现叶绿素质量浓度变化对偏振特性的影响并不是非常显著,而当沉淀物质量浓度不断上升时,偏振离水辐射信号不断增强且变化幅度愈大;离水辐射信号对观测方位具有较强的敏感性.

Using a new ASD imaging polarimetry, the polarized water leaving radiance of given concentration algae and sediment （mainly soil） is measured to know whether the change of concentration and viewing azimuth angle has any influence on the parallel polarized water leaving radiance and how it influences.Furthermore, it is attempted to find the potential usage of polarization in water quality remote sensing. The result shows that radiance from the algae water body is insensitive with the concentration, radiance from sediment water body has a positive correlation with the concentration, and polarized water leaving radiance is sensitive to the viewing azimuth angle.