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结合Fournier-Forand和Henyey-Greenstein体积散射函数,利用Monte Carlo法建立水中激光脉冲传输特性分析模型。采用该模型分析了散射体相对折射率和尺寸分布对水中光脉冲传输特性的影响。研究表明:光脉冲在水中传输时,随着散射体相对折射率的增大和小尺度散射体相对含量的增加,脉冲展宽增加,光波前向散射减弱且空间分布扩展加剧,到达角分布更离散。与传统水中光脉冲传输仿真模型相比,此模型更加有效。
According to the volume scattering function of Fournier-Forand and Henyey-Greenstein, the model of laser pulse transmission in water was established by Monte Carlo method. The model was used to analyze the influence of relative refractive index and size distribution of diffuser on the optical pulse transmission characteristics in water. The results show that with the increase of the relative refractive index of diffuser and the relative content of small scatterers, the pulse broadening increases, the forward scattering of light wave attenuates and the spatial distribution expands exacerbated, and the angle of arrival distribution is more discrete. Compared with the traditional underwater light pulse transmission simulation model, this model is more effective.