声涡旋水声高速通信技术研究

Research on high-speed communication technology of acoustic vortex underwater sound

针对水声信道的复杂性,同时为了提升水声通信速率,进行声涡旋水声高速通信技术研究。研究基于相控阵列的水声高速声涡旋波基本原理,提出相控阵列设计方案,对水声高速声涡旋信号进行计算机仿真,验证不同模态的水声高速声涡旋波的正交特性。并在空气中和水中进行试验,测试同时发射2种模态时的水声高速声涡旋信号的通信性能,试验结果显示通信性能不变时,实现了通信速率提高1倍。

This report mainly studies the high-speed communication technology of underwater acoustic vortex wave.Firstly,the basic principle of underwater high speed acoustic vortex wave based on phased array is studied.Then,the computer simulation of underwater high speed acoustic vortex signal is carried out.The orthogonal characteristics of underwater high speed acoustic vortex wave with different modes are verified.The communication performance of underwater high speed acoustic vortex signals with two modes simultaneously is tested.The minimum detectable signal-to-noise ratio is the same as that of a signal mode,so the communication rate is increased by one time.Finally,tests of underwater high speed acoustic vortex wave under different modes are carried out in air and bucket respectively.Experiments in air and bucket show that there is no error code in underwater high speed acoustic vortex wave communication under different modes.