Analyzing Polarization Transmission Characteristics in Foggy Environments Based on the Indices of Polarimetric Purity

In this paper, we investigated depolarization performance of polarized light in fog scattering system using the indices of polarimetric purity (IPPs) based on the Monte Carlo (MC) algorithm. We compared and analyzed the performances of degree of polarization (DoP) and IPPs in mono-disperse and poly-disperse scattering systems. The depolarization performance of mono-disperse scattering system is dependent on incident infrared wavelength. For the poly-disperse scattering system, the depolarization performance is significantly dependent on the particle-size distributions and the proportion of small particles. These results demonstrate that the IPPs can describe the depolarization performances of disperse systems effectively. It is of great practical significance because it can transmit information in high fidelity better than the DoP.