An evaluation algorithm of turbulent influence based on phase screen model

In this paper, a novel evaluation algorithm of turbulent influence is presented for influence investigation of Gaussian beam and Airy beams in atmospheric turbulence, in which a parameter to quantify the influence of turbulence is proposed and named by Intensity Variation Index. The algorithm is beneficial to analyze the distortion caused by the atmosphere. The effects of wavelength, channel condition, and the type of beams are simulated. The results show that the Intensity Variation Index of Gaussian is dually affected by atmospheric coherence length and wavelength, furthermore, the change trend is similar to the scintillation index, which shows the correctness of proposed algorithm. Meanwhile, Airy beams also affected by two factors. After performance comparison, the turbulence effect of Airy beams is greater than that of the Gaussian beam and the reason is the loss of Airy beams’ side lobes during transmission in turbulent flow. The proposed evaluation algorithm can evaluate the effects of turbulence and can accurately represent the affected trends of the beam under different conditions.