为了提高水下激光光幕的探测性能，根据水下光束传播规律，构建了水下激光光幕探测模型，基于蒙特卡罗模拟方法对水下激光光幕探测性能进行研究。基于水下激光光幕探测模型，利用MATLAB软件进行仿真，分析海水衰减系数、初始功率及传输距离对水下激光光幕传输的影响。仿真结果表明：海水的衰减系数越小，水下激光光幕传输率受到的影响越小。海水参数和传输距离一定时，随着初始功率的增加，只会影响到达探测端的最终功率，但对传输率影响不大。当海水衰减系数一定，传输距离为1 m时，其传输率约为15%且变化稳定；当传输距离增加到30 m时，传输率在5%以下。

In order to improve the detection performance of underwater laser screen, the underwater laser light screen detection model was established according to the underwater beam propagation law. The detection performance of underwater laser light screen was analyzed based on Monte Carlo simulation method. The simulations were carried out based on the above underwater laser light screen detection model using MATLAB software to analyze the influence of attenuation coefficient of seawater,initial power and transmission distance on the underwater laser light screen transmission. The simulation results show that the smaller the attenuation coefficient of seawater, the smaller the impact of the transmission rate of the underwater laser light screen. When the seawater parameters and transmission distance are fixed, the initial power can only affect the final power reaching the detection end, but it has little effect on the transmission rate of the underwater laser light screen. When the seawater parameter is fixed and the transmission distance is 1m, the transmission rate is about 15% and is stable. When the transmission distance is increased to 30 m, the transmission rate is below 5%.