激光通信是水下无线通信的新热点, 准确评估海水中激光的传输衰减是信道研究的关键。综合现有的QAA-RGR ( Quasi-Analytical Algorithm Red-Green-bands-Ratio) 遥感反演算法和国家卫星海洋应用服务(NSOAS)模型, 提出了一种新的遥感反演算法, 可直接通过中分辨率成像光谱仪(MODIS)遥感数据反演得到海水衰减系数光谱。结合MODIS模型提供的L2级数据, 对比反演所得的吸收系数光谱和散射系数光谱, 验证了反演算法的可行性。该反演算法对动态分析和把握我国沿海地区的海水光学特性具有重要意义。

Laser communication is a new hot spot in underwater wireless communication. It′s the key in channel research to evaluate the laser transmission attenuation under seawater environment accurately. A new remote sensing inversion algorithm is proposed by synthesizing the existed QAA-RGR (Quasi-Analytical Algorithm Red-Green-Bands-Ratio) remote sensing inversion algorithm and the national satellite ocean application service (NSOAS) model, which can evaluate the attenuation coefficient spectra based on moderate-resolution imaging spectroradiometer (MODIS) land bands data directly. Compared the absorption coefficient spectrum and scattering coefficient spectrum, which is estimated by inversion algorithm with MODIS L2 level data, the feasibility of the inversion algorithm is verified. It is important to analysis and understand the optical properties of seawater at coastal areas dynamically.