气海动态跨介质海面蓝绿激光下行传输链路上的散射特性(特邀)  

Scattering characteristics over a dynamic trans-media sea surface bluegreen laser downlink in the air-sea(Invited)

作　　者：张佳琳 王明军[1] 刘永志 王宇航 王主玉 成群 Zhang Jialin;Wang Mingjun;Liu Yongzhi;Wang Yuhang;Wang Zhuyu;Cheng Qun(School of Automation and Information Engineering,Xi’an University of Technology,Xi'an 710048,China;Military Representative Office,Rocket Army Equipment Department in Tianjin Area,Tianjin 300308,China)

机构地区：[1]西安理工大学自动化与信息工程学院,陕西西安710048 [2]火箭军装备部驻天津地区军事代表室,天津300308

出　　处：《红外与激光工程》2022年第6期15-21,共7页Infrared and Laser Engineering

基　　金：国家自然科学基金重大研究计划培育项目(92052106);国家自然科学基金(61771385);陕西省杰出青年科学基金(2020 JC-42)。

摘　　要：实现空天地海立体化光信息传输的技术瓶颈就是需要解决气海-海气跨介质动态海面条件下激光上下行传输问题。文中主要利用海水环境下蓝绿激光作为载波,提出了蓝绿激光通过气海动态跨介质海面的下行传输数值研究方法。详细讨论了近海面大气海雾、海面风速和海水中的粒子分布对蓝绿激光下行传输散射特性的影响。数值计算了不同风速下蓝绿激光透过率随透射角的变化以及不同近海面大气海雾能见度、不同叶绿素浓度、不同气泡浓度等条件下蓝绿激光下行传输的透过率。结果表明:蓝绿激光在海水中传输时,气泡对激光衰减的影响随着风速的增加而增加,随着传输深度的增加而减小;随着近海面大气中海雾能见度的增大,蓝绿激光通过大气海面和海水的透过率逐渐增大,随着传输距离的增加,叶绿素的影响逐渐增大,蓝绿激光的透过率减小。文中工作对气海-海气蓝绿激光跨介质上下行无线光传输和通信提供理论和技术支撑。The technical bottleneck of realizing the three-dimensional optical information transmission of spaceair-ground-sea is to solve the problem of laser uplink and downlink transmission under the dynamic sea surface conditions of air-sea sea-air cross-media. This paper mainly used the blue-green laser in the seawater environment as the carrier and proposed a numerical research method for the downlink transmission of the blue-green laser through the air-sea dynamic across the medium sea surface. The effects of atmospheric sea mist, sea surface wind speed, and particle distribution in seawater on the down-transmission scattering properties of blue-green lasers were discussed in detail. The variation of blue-green laser transmittance with transmission angle under different wind speeds, and the transmittance of blue-green laser downlink transmission under different atmospheric sea mist visibility, different chlorophyll concentrations, and different bubble concentrations were numerically calculated. The results showed that when the blue-green laser is transmitted in seawater, the effect of bubbles on laser attenuation increases with the increase of wind speed and decreases with the increase of transmission depth;the transmission rate of the blue-green laser through the atmospheric sea surface and seawater gradually increases with the increase of visibility of sea mist in the atmosphere at the offshore surface. With the increase of transmission distance, the influence of chlorophyll increases gradually, and the transmittance of blue-green laser decreases. The work in this paper provides theoretical and technical support for the cross-media wireless optical transmission and communication of blue-green lasers uplink and downlink across the air-sea and sea-air.

关 键 词：蓝绿激光 跨介质传输 动态海面 气泡 散射 激光透过率 

分 类 号：O439[机械工程—光学工程]