研究了计算海面激光反射的几何光学方法。首先根据JONSWAP非稳态海谱模型数值模拟出二维随机粗糙海面,再采用几何光学方法对入射激光光束在海面上的反射光进行建模,最后计算出海面激光光斑反射光强的空间分布。编制了相关的计算机程序,分析了在不同入射角度和不同风速下的激光光束反射特性。计算结果表明该方法对研究二维随机粗糙海表面激光反射特性有一定参考价值。 The geometrical optics method of calculating sea laser reflection is studied. Firstly, a two-dimensional random rough sea surface is simulated by using JONSWAP unsteady sea-level model. The geometrical optics is used to model the reflected light of the incident laser beam on the sea surface. Finally, the spatial distribution of the reflected light intensity of the laser spot on the sea surface is calculated. A computer program was developed to analyze the laser beam reflection characteristics at different incident angles and wind speeds. The results show that the proposed method is of certain reference value for the study of laser reflection characteristics of two-dimensional random rough sea surface.