CAJ | 학술논문

海雾是一种具有吸收和散射特性的介质，对激光有较强的衰减作用。结合海雾环境的物理特征，根据电介质极化理论推导出了海雾介质等效介电常数的一般计算模型，并进一步得到激光雾中传输衰减率计算模型。以平流雾的经验雾滴谱和两次海雾个例雾滴谱为例对介电常数衰减模型进行了计算和仿真，并分析和评估了海雾环境物理特征对激光传输效应的影响。结果表明，基于等效介电常数的激光雾中衰减计算模型体现了海雾物理特性的影响，特别是能见度、雾滴谱分布等对其作用明显。
해무시일충구유흡수화산사특성적개질，대격광유교강적쇠감작용。결합해무배경적물리특정，근거전개질겁화이론추도출료해무개질등효개전상수적일반계산모형，병진일보득도격광무중전수쇠감솔계산모형。이평류무적경험무적보화량차해무개례무적보위례대개전상수쇠감모형진행료계산화방진，병분석화평고료해무배경물리특정대격광전수효응적영향。결과표명，기우등효개전상수적격광무중쇠감계산모형체현료해무물리특성적영향，특별시능견도、무적보분포등대기작용명현。
As the medium with absorption and scattering properties,sea fog has strong attenuation effect on the laser. Combined with the physical characteristics of sea fog,the general calculating model of sea fog equivalent permittivity is derived according to the theory of dielectric polarization.Furthermore,the calculating model of attenuation rate is also obtained when laser is propagated through fog.As an example of experiential droplet spectrum of advection fog and droplet distribution of two sea fog cases,the attenuation model of equivalent permittivity is calculated and simulated, and the impact of sea fog physical characteristics on laser transmission effect is analyzed and evaluated.The results show that the impact of sea fog physical characteristics is incarnated in the model based on equivalent permittivity, which is obviously effected by sea fog characteristics such as visibility and droplet distribution.