OPTICAL POLARIZED EFFECTS FOR QUANTITATIVE REMOTE SENSING
- 1Beijing Key Laboratory of Spatial Information Integration and 3S Application, School of Earth and Space Sciences, Peking University, Beijing 100871, China
- 2Rutherford Appleton Lab Space, Science and Technologies Facilities Council, Harwell Oxford, OX110QX, UK
- 3Finnish Geospatial Research Institute (FGI), Geodeentinrinne 2, FI-02430, Masala, Finland
Keywords: Remote Sensing, Polarization effects, Atmosphere, Skylight, Instruments
Abstract. Polarization is one of the four basic physical properties of solar radiation. After the solar radiation reaches the surface of these media, it reflects, scatters or refracts, and exhibits different degrees of polarization. We use Rayleigh scattering model to get the simulation results of the sky polarization field. We use polarized fisheye camera to collect the sky polarization image, and calculate the distribution pattern of DOLP (degree of linear polarization) and AOLP (azimuth of linear polarization) of the skylight. The stability and gradual change of the degree of polarization in the zenith direction are verified, and the distribution law and daily change law of the degree of polarization in the sky are obtained. With the increase of the solar altitude angle, the degree of polarization will decrease. We also observed the skylight polarization in different weather conditions.