Temporal and Spatial Characteristics of the Global Skylight Polarization Vector Field

There are two widely recognized global fields in nature: the gravity field and geomagnetic field. Universal gravitation Earth rotation important sources of Earth’s fields, which well known to us. After years long-term observation, research, analysis, it was discovered that we have neglected a direct incident energy universe on Earth. Solar radiation, leading exchange from atmosphere 100 km above land surface, is source Polarization one four basic physical properties solar radiation. radiation reaches surface these media, reflects, scatters or refracts, exhibits different degrees polarization. The polarized light forms Earth–sky polarization vector dispersion expected become new method for analysis human environment. detection best way accurately explore atmospheric effects. Local skylight distribution found sites world; however, sunlight has never been explored. In this paper, investigate Global Skylight Field. This study aimed at providing insight into laws over our We use Rayleigh scattering model obtain simulation results sky occurs when particle size much smaller than wavelength electromagnetic wave. also fisheye camera collect image calculate pattern DOLP (degree linear polarization) AOLP (azimuth skylight. stability gradual change degree zenith direction verified, law daily obtained. With increase altitude angle, will decrease. observed weather conditions. Our demonstrate basis, characteristics, usability They show an inevitable trend optical remote sensing sensing.