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由于实际环境的复杂性,理论计算大尺寸复杂目标粗糙表面的激光散射回波能量影响一直十分困难。将随机介质离散粒子光散射理论和粗糙面光散射理论结合起来,利用计算机图形学精确建立复杂目标的几何模型,依据复杂目标粗糙表面特征,并考虑沙尘、雾等环境特性对激光传输的影响,计算了大尺寸复杂目标粗糙表面激光散射在复杂环境下回波能量随不同观测角度和能见度的变化情况。计算结果可用于目标特征提取、识别和分类,满足工程精度需求。
Due to the complexity of the actual environment, it has been very difficult to theoretically calculate the energy of the laser scattering echo of rough surfaces with large and complex targets. Combining the theory of discrete-medium scattering of random medium with the theory of rough surface light scattering, the geometrical model of complex target is established precisely by computer graphics. According to the rough surface features of complex targets, the influence of environmental characteristics such as sand dust and fog on laser transmission is considered , The variation of the echo energy with different observation angles and visibility under complex environment of laser scattering of large size and complex targets was calculated. The results can be used to extract, identify and classify the target features to meet the needs of engineering accuracy.