光学学报, 2018, 38 (3): 0301002, 网络出版: 2018-03-20   

复杂海况下激光气-海信道传输特性 下载: 972次

Laser Atmosphere-Seawater Channel Transmission Characteristics Under Complicated Sea Conditions
作者单位
1 江苏自动化研究所电子设备事业部, 江苏 连云港 222006
2 西安电子科技大学物理与光电工程学院, 陕西 西安 710071
摘要
在蓝绿激光对潜通信及对潜探测应用中, 激光分别通过大气、气-海界面以及海水信道传输。由于海面上方覆盖海雾、风速引起海面粗糙度变化以及覆盖泡沫、海水信道中存在悬浮粒子等多种因素的影响, 蓝绿激光传输信道呈现复杂特征。基于米散射理论、粗糙面散射理论及辐射传输理论, 针对上述复杂海况开展海雾大气、泡沫覆盖风驱粗糙海面及考虑浮游植物分布的海水信道的激光传输特性研究, 并详细讨论了风速、海雾能见度及浮游植物分布对激光功率的衰减作用。结果表明:海雾、粗糙海面泡沫和海水信道中浮游植物对传输激光功率共同起作用, 其中海水信道中浮游植物对激光功率的衰减最为显著, 风速改变带来的海面粗糙度变化以及覆盖泡沫主要对激光透射角域产生显著影响, 同时对激光功率的透射极值产生一定的影响。
Abstract
In the applications of blue-green laser submarine communication and submarine detection, laser transmits through the atmosphere, air-sea interface, and seawater channel. The blue-green laser transmission channel presents complicated characteristics due to the influences of the sea fog over the sea surface, the variation of sea surface roughness and foams caused by wind speed, and the suspended particles in the seawater channel. Based on the Mie scattering theory, the rough surface scattering theory, and the vector radiative transfer theory, we study the laser seawater channel transmission characteristics under the above three influences, and discuss the influence of wind speed, sea fog visibility, and phytoplankton distributions on laser power attenuation in detail. The results show that the sea fog, the rough sea surface with foams, and the phytoplankton distributions in seawater channel affect the transmission laser power together. Among them, the influence of phytoplankton distributions in seawater channel on the laser power attenuation is most significant. The variations of sea surface roughness and foams caused by wind speed have a significant influence on the laser transmission angle domain and meanwhile have a certain influence on transmission extremal value of laser power.

李祥震, 苗希彩, 亓晓, 韩香娥, 卢芳. 复杂海况下激光气-海信道传输特性[J]. 光学学报, 2018, 38(3): 0301002. Li Xiangzhen, Miao Xicai, Qi Xiao, Han Xiang′e, Lu Fang. Laser Atmosphere-Seawater Channel Transmission Characteristics Under Complicated Sea Conditions[J]. Acta Optica Sinica, 2018, 38(3): 0301002.

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