Correction of sky glint above water surface based on polarized principle

The specular reflected light above water surface, including sun-glint and sky-glint, is one of the key factors that affect remote sensing of water color. This paper aims to correct the sun-glint and sky-glint effects in measurements of upward radiance from water surface based on the polarized principle and the multi-angle polarized remote sensing. A polarization filter was placed in front of the sensor of ASD field spectrometer to obtain the polarized characteristics of water surface spectrum in various conditions. By contrast with the spectral obtained under different incident geometry and polarized conditions, the experimental results show that the reflected light can be corrected completely with an incident zenith angle of 53 degree (Brewster's angle) and zero polarized angle. And most of the reflected light can be corrected with a random incident angle and zero polarized angle. In conclusion, the reflected light can be reduced obviously or even removed completely based on the polarized principle, which provide important value to improve the accuracy of water color remote sensing.