Influence of Laser Intensity Fluctuations on the Noise Immunity of a Binary Data Transmission System

The authors analyze the influence of intensity fluctuations of laser signals transmitted through a turbulent atmosphere on the noise immunity of a system containing a detector of the “photoelectron counter” type with a decision-making function based on the Neumann–Pearson criterion. The photoelectron distribution function is computed by means of finite sums including gamma functions and probability integrals. The results of computer calculations of the system characteristics are given.