中文摘要：

由于光在水下传输时的衰减和散射效应，为了对水下可见光探测及CCD水下图像采集与测量系统进行更加全面的研究，针对影响水下光场建模的光折射率与吸收衰减时变性问题，提出一种基于熵权思想的多参数拟合水下光场建模方法。根据熵权思想构建水下光场能量衰减熵权矩阵，采用不同条件下折射率海试实测数据，建立一个含有多参数拟合的折射因子模型．结合基于Stokes理论的二三维仿真方法，对整个光场进行matlab仿真。结果显示：折射率的大小与海水的盐度成正比．与海水温度和光的波长成反比。光线经过折射后会形成干涉高亮区，能量逐渐衰减直至消失。研究结论验证了模型的有效性和稳定性．为水下可见光探测和CCD水下图像采集与测量的系统优化提供了参考。

英文摘要：

Due to the attenuation and scattering effect of light in underwater transmission, in order to make a more comprehensive research on the underwater visible light detection and CCD underwater image acquisition and measure- ment system, in view of the time-varying problem that affects optical refractive index and the absorption and attenua- tion of underwater light fields, a underwater light fields method is put forward based on entropy weight and multi-pa- rameter fitting. According to the entropy weight theory, the underwater light fields energy attenuation entropy weight matrix is built, the measured data of different sea water characteristics are used to build an refraction factor model in- cluding multi-parameter, combined the two or three dimensional simulation method based on Stokes method, the whole fields are simulated. The results show that the refractive index is proportional to the salinity of sea water and is inversely proportional to the sea water temperature and the wavelength of the light ; after refraction, the light will form an interference region, the energy will gradually decay and disappear. Simulation results verify its effectiveness and stability, which provides a reference for the optimization of underwater visible light detection and CCD image acquisi- tion and measurement system.