利用随机面元模型，详细分析了刚性随机粗糙圆柱表面的激光散射特点，建立了实用化的随机粗糙圆柱激光散射理论模型，并给出了正入射时几种情况下的激光散射图像，分析了圆柱目标的激光散射能量计算方法，并仿真了光束在平面目标、圆柱目标表面做正弦摆动时，光斑在不同位置的反射能量，利用激光信号的强度变化就可以得到物体的边缘信息。

In this paper, the random facet model is employed to establish the rough cylinder scattering theory, which is used to calculate the intensity distributions of the scattered laser from random rough cylinder surfaces, and this provides useful model for the most engineering design. It measures the profile of target by detecting the change of return laser energy. By this way, the edge message of target can be got.