Preliminary Study on the Characteristics of Laser Underwater Proximity Transmission

Abstract

Abstract Due to the special circumstances of underwater channel environment, laser underwater communication technology is facing challenges. The characteristics of underwater channel have been simulated and tested in this paper. Firstly, the scattering model and Monte-Carlo simulation method based on Mie scattering are established. Secondly, the simulation test on the influence of laser transmission under different parameter conditions is carried out. Finally, the design of the laser signal receiving system and the laser underwater transmission experiment are designed. The method of reducing the signal to noise ratio is analyzed and put forward. The experimental research is also carried out to verify the correctness of the simulation results. The experimental results show that with the increase of transmission distance, the diameter and density of scattering particles, the time domain broadening, space broadening and energy absorption of the laser will reduce the received light energy transfer signal, the sine wave will be distorted and the transmission will be affected effectiveness.