水下激光通信系统接收机倾角及位置对接收光功率的影响研究

Analysis of the Influence of Receiver Tilt Angle and Position on the Received Optical Power of Underwater Laser Communication System

摘要:

由于水下通信信道的复杂性,水下激光通信面临着功率衰减和通信距离受限的问题。论文采用蒙特卡洛方法建立了水下高斯光束传输仿真模型,基于该模型重点研究了接收机倾角和接收机位置对接收光功率衰减的影响规律。仿真结果表明：在水下信道中,接收机阵面正对激光束时,接收光功率最大,随着接收机倾角的增加,接收光功率逐渐减小。当接收机沿着Y轴方向正向移动时,接收机在激光束的范围内时,接收率不变；接收机在激光束的范围外时,接收光功率随着接收机Y轴坐标的增加而减小,仿真结果可为水下激光通信工程实践提供参考依据。

Abstract:

Due to the complexity of underwater communication channels, underwater laser communication is faced with the problems of power attenuation and communication distance limitation. In this paper, a simulation model of underwater Gaussian beam transmission is established by Monte Carlo method. Based on this model, the influence of receiver tilt angle and receiver position on the attenuation of received optical power is studied. The simulation results show that in the underwater channel, the received optical power reaches the maximum when the receiver array is directly facing the laser beam, and the received optical power gradually decreases with the increase of the inclination of the receiver. When the receiver moves forward along the Y-axis direction, the receiving rate is unchanged when the receiver is within the range of the laser beam. When the receiver is outside the range of laser beam, the received optical power decreases with the increase of Y-axis coordinates of the receiver. The simulation results can provide a reference for the practice of underwater laser communication engineering.