基于圆弧拟合算法的海水激光通信信道研究

针对海水激光通信信道复杂多变的问题,利用蒙特卡洛法模拟了蓝绿激光在海水信道中的传输过程,得到了不同传输距离下接收功率的统计图。分别利用高斯函数和圆弧拟合算法对此统计结果进行了拟合,并计算出了激光在不同传输距离的高斯拟合误差和圆弧拟合误差,得出圆弧拟合算法拟合误差小于高斯函数拟合。在圆弧拟合算法的基础上建立了水下无线光通信信道模型,根据该传输模型可快速得到在一定海水水质参数下,海水中激光传输距离、任意接收位置和接收光功率之间的关系,为水下无线光通信系统的设计提供了参考价值。

Channel research on seawater laser communication based on arc fitting algorithm

Aiming at the complicated and changeable channel of seawater laser communication channel,Monte Carlo simulation is used to simulate the transmission process of blue green laser in seawater channel,and the simultaneous interpreting of the received power under different transmission distances is obtained.The Gauss function and arc fitting algorithm are used to fit the statistical results respectively.The Gauss fitting error and the arc fitting error of the laser in different distances are calculated.The fitting error of the arc algorithm is less than that of Gauss function fitting.Based on the arc fitting algorithm,the underwater wireless optical communication channel model is established.According to the transmission model,the relationship among laser transmission distance,arbitrary receiving position and receiving power can be quickly obtained under certain sea water quality parameters,which provides reference value for the design of underwater wireless optical communication system.