激光引信的探测性能容易受到烟雾的干扰，引起虚警和漏警。为研究脉冲激光引信在烟雾环境中的传输特性，基于Mie散射理论和Monte Carlo方法，建立脉冲激光引信烟雾后向散射模型，仿真905 nm脉冲激光在不同烟雾环境下的回波特性，进行相关试验，对比仿真归一化峰值强度与实测峰值电压，进行相关性分析，验证模型的准确性。分析不同烟雾质量浓度、烟筒长度与距离下脉冲激光引信在烟雾环境中的后向散射特性，得到不同条件对回波的影响规律，研究结果可为脉冲激光引信抗烟雾干扰提供支撑。

The detection ability of laser fuze is easily disturbed by smoke, which causes false alarm. In order to study on the backscattering characteristics of pulsed laser fuze in smoke, the relevant model based on Mie scattering theory and Monte Carlo method was established, and the backscattering signal in smoke was simulated using 905 nm pulsed laser. To verify the accuracy of the model, the actual peak voltage was compared with the simulated normalized intensity and correlation analysis was conducted. Then, the backscattering characteristics of the pulsed laser fuze under different smoke concentrations, length of pipes and distances were analyzed. Finally, the influence of different smoke environment was obtained. The results can provide support for the anti-smoke interference of the pulsed laser fuze.