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This paper simulates real ocean turbulence based on underwater temperature and salinity data provided by Argo. The power spectrum inversion method is used to generate a layered turbulence phase screen in the ocean, and a slant range turbulence layered channel model that varies with ocean depth is established. The transmission characteristics and communication performance of off-axis vortex beams under ocean slant range links are studied. We simulated the intensity and phase of off-axis vortex beams transmitted in ocean turbulence and analyzed the effects of channel and light source parameters on scintillation index during the transmission of off-axis vortex beams. In addition, the expression for the detection probability of off-axis vortex beams at the receiving end in oblique layered ocean channels was derived, and the influence of different light source parameters on the detection probability, error rate, and channel capacity of off-axis vortex beams was analyzed. This study provides important reference value for the study of the transmission characteristics of off-axis vortex beams in ocean turbulence.
Chen et al. (Wed,) studied this question.