前向散射对激光水下成像的影响

摘要

为研究前向散射对水下成像的影响,利用辐射传输理论建立了激光水下成像前向散射理论模型,提出了水下成像前向散射影响系数,用以表征前向散射对水下成像质量的影响程度,并给出了前向散射功率及前向散射影响系数的解析表达式.利用Matlab进行了数值模拟分析,得出了水下成像前向散射光功率和影响系数随探测水深及水衰减系数的变化规律,说明了非对称因子的取值对成像质量具有较大的影响.%To study the forward-scattering effect on underwater laser imaging, a forward-scattering model of underwater laser imaging system based on radiative transfer theory was established. The forward-scattering influence coefficient was proposed, and the analytical expression of the coefficient and the forward-scattering power was given. The variation of the forward-scattering power and influence coefficient with exploration depth and water attenuation coefficient was attained using Matlab, which proved that the effect of asymmetry factor on underwater imaging quality was large.