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提出了基于差分相干解调法的DS/BDPSK水声通信技术,在接收端采用差分相干解调的方法,解决了在水声通信中载波估计较难的问题,可克服传输过程中由于载波漂移产生的频率和相位误差.通过计算机仿真研究、湖试试验,验证了该系统在复杂的水声信道中具有较强的抗多径能力、抗多普勒能力,能实现低误码率通信,具有较好的有效性和鲁棒性.
The DS / BDPSK underwater acoustic communication technology based on the differential coherent demodulation method is proposed. The method of differential coherent demodulation at the receiving end solves the problem of difficult carrier estimation in underwater acoustic communication, and overcomes the problems of carrier drift The frequency and the phase error of the system are obtained.According to computer simulation and experiment of lake experiment, it is verified that the system has strong anti-multipath ability, anti-Doppler ability, low bit error rate communication in complex underwater acoustic channel, Has good effectiveness and robustness.