偏振在多角度遥感中的太阳耀光消除的应用

在进行水色遥感时,水面的镜面反射产生的太阳耀光,影响水体信息的提取和利用。以前的研究表明,当入射角为水体的布儒斯特角时,偏振可以消除太阳耀光,但是这种方法条件过于苛刻,现实中很难实现。针对这种情况,推导了自然光入射到水面后其反射光的偏振状态以及光线入射角与水体偏振度的关系。理论上证明了以非布儒斯特角入射时偏振消除太阳耀光的可能性,计算了从各个角度入射到纯净水体表面太阳耀光剥离的程度,实验验证了结论。

Applications of polarization in elimination of sun glitter in multi-angle remote sensing

The mirror reflectance of water surface produces the sun glitter in ocean color remote sensing.It is unable to draw water body information from the total radiation at all.The previous study showed that polarization can eliminate the sun glitter when the incidence angle is just Brewster angle of water body.But this method suffers from difficulty in rigorous conditions and being realized.The polarization state of reflected light of water and the relationship of incidence angle and degree of water polarization were deduced.The feasibility of sun glitter's elimination by polarized with non Brewster angle was set forth.The level of sun glitter's peeling-off of water at some incidence angles were calculated.The results are proved by the experiments.