基于声学-光学体制的水-空跨介质通信算法

Algorithm of Water-Air Trans-Medium Communication Based on Acousto-Optic System

为实现水-空跨介质上行无线通信,文中在激光干涉检测水下声信号的基础上,通过仿真计算获得了不同水深下到水平面的声信号衰减曲线,以及不同水声功率频率信号引起的水面微振动曲线;建立了水下声源特征与水表面扰动之间的定量关系;设计了跨介质通信的码元,并对多种解调方式进行了比较,分析了各个参数变化对传输过程误码率的影响,实现了声学-激光通信的调制与解调仿真。

To achieve underwater-aerial trans-medium uplink wireless communication,based on the laser interference detection of underwater acoustic signals,attenuation curves of acoustic signals at various water depths to the water surface and micro-vibration curves on the water surface caused by different underwater acoustic power frequency signals were obtained through simulation calculations.A quantitative relationship between underwater sound source characteristics and disturbances on the water surface was established.Code elements for trans-medium communication were designed,and various demodulation methods were compared.The impact of parameter variations on the transmission error rate was analyzed,and modulation and demodulation simulations of acoustic-laser communication were achieved.