基于多次散射模型,设计了基于蒙特卡罗仿真模型的LED传输系统，研究了不同水体环境下接收信号到达角度和接收机视场角对接收信号功率和接收信噪比的影响。在纯水和纯净大洋水环境下，接收信号功率集中分布在0°～3°，较小的接收机视场角(1°)可以获得最大信噪比。在港口水和沿海水环境下，信号功率的分布显著扩展，特别是港口水环境下扩展到0°～90°。在沿海水环境下，当接收机视场角为8°，可以获得最大信噪比；在港口水环境下，接收视场角增大到30°，可以获得最大信噪比。

Based on multi-scattering model，we design an LED transmission system based Monte-Carol simulation model, and study the influence of arriving angle of the received signal and field of view (FOV) of the receiver on the received signal power and the received signal-to-noise ratio (SNR) under different water environments. Under pure water and clear ocean water environments, the received power is mainly distributed at the arriving angle range of 0°-3°, and when the receiver with small FOV (1°), the maximum received SNR can be achieved. While under harbor and coastal water environments, the received power distribution obviously spread, especially for harbor water, the distribution expands from 0° to 90°. Under coastal water environment, when the receiver FOV is set at 8°, the maximum SNR is achieved. Under harbor water environment, when the receiver FOV increases to 30°, the maximum SNR is achieved.