Research on Transmission Performance of Laser Communication System in Atmospheric Turbulent Channel

Abstract. In order to solve the problem of system interference caused by noise interference of laser communication system, according to the theory of finite aperture receiving intensity fluctuation, the signal-to-noise ratio model based on the influence of atmospheric fluctuation on atmospheric turbulence and no turbulence is established respectively, and the BER model of laser communication system under turbulent conditions is given. Through calculation and analysis, the intensity fluctuation and the receiver aperture at the receiving end are the main factors causing the fluctuation of the performance of the atmospheric turbulent optical communication system. The model can effectively evaluate the BER performance of laser communication systems under atmospheric turbulence conditions and provide reference for relevant theoretical research.