针对现有计算蓝绿激光在水下的衰减时, 同类海水采用固定衰减系数估算, 而实际不同海域的衰减系数存在差异, 导致某些理论可行的区域无法正常通信的问题, 提出结合透明度遥感观测数据计算蓝绿激光在水下透过率的新方法。根据中分辨率成像光谱仪(MODIS)遥感数据反演黄海部分海域蓝绿激光衰减系数, 分析黄海衰减系数的时空分布特点, 并估算水下50 m的透过率, 评估蓝绿激光通信的可行性。分析结果表明: 透明度越高, 衰减系数越小, 传输距离一定时透过率越高；透明度大于5.295 m时, 激光在水下50 m的衰减小于40 dB, 可以进行蓝绿激光通信。

In view of the existing calculation of the attenuation of blue-green laser underwater, the same kind of sea water is estimated by fixed attenuation coefficient, but the actual attenuation coefficient of different sea areas is different, which leads to the problem that some theoretically feasible areas cannot communicate normally. A new method is proposed to calculate the transmission of blue-green laser underwater based on the transparency remote sensing observation data. According to the moderate-resolution imaging spectroradiometer(MODIS) remote sensing data is used to retrieve the attenuation coefficient of blue-green laser in some areas of the Yellow Sea, this paper analyzes the temporal and spatial distribution characteristics of the attenuation coefficient of the Yellow Sea, estimates the transmissivity of 50 m underwater, and evaluates the feasibility of blue-green laser communication. It is concluded that the higher the transparency is, the smaller the attenuation coefficient is, and the higher the transmittance is when the transmission distance is fixed; When the transparency is greater than 5.295 m, the attenuation of the laser at 50 m underwater is less than 40 dB, and the blue-green laser communication can be carried out.