Droplet distribution models for visibility calculation

In order to address the reduction of visibility due to fog, investigations are undertaken by reproducing the effect of fog by numerical simulation, namely, with a model of light scattering connected to Mie theory. This model needs to integrate droplet distributions or models of particle size in the software. The assumptions for models of particles made so far are based on the work [1] . All the data we have today thanks to experiments in natural fog, allows us to test the application of these models on new data and suggest improvements in case of divergence. This study uses simulations with Gamma and Log-normal laws. The combination of these new simulations with light scattering theory, are able to update models considered in determining road visibility.