Unified Statistical Channel Model of Ship (or Shore)-to-Ship FSO Communications with Pointing Errors

In this paper, we assume free space optical link between ships or between ship and shore and modeled the pointing error that occurs according to three typical movements of the ship. Then, we combined the pointing error models with weak atmospheric turbulence and derived the composite probability density functions (PDF) for each case of pointing errormodels. Also, using the similarity of the composite PDFs, we obtain a unified expression for the composite PDF. The numerical results confirm that the derived composite PDFs give precise prediction by comparing it with Monte-Carlo simulations.