针对激光脉冲在水下传输时导致脉冲的时域展宽, 严重地影响了水下激光通信的性能。以蒙特卡罗模拟为手段, 在一定的水质条件下, 对激光脉冲经过不同传输距离后的脉冲宽度进行了计算机模拟, 模拟结果与实验测量数据相符, 精确度高于其他方法, 该方法尤其适用于激光脉冲远距离传输的情况, 证明了该方法可准确地计算激光脉冲展宽后的脉宽值, 能有效地提高水下激光通信的性能。

The time-domain broadening phenomenon of the laser pulse in the underwater transmission brings the bad aspect during the laser communication. With the Monte Carlo method presented, the widths of the laser pulse are simulated under certain water quality conditions. The simulated results are in agreement with the practical measurement data, and their precision is higher than that of other methods. This method is especially suitable for long-distance transmission of the laser pulse. It proves this method can accurately calculate the width value of the laser pulse, and it also improves the function of the underwater laser communication.