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本文在深入研究水声通信信道特性及多载波关键技术的基础上,设计并研制了基于M FSK的高速自适应多载波水声通信系统,并进行了湖上实验。理论分析、仿真及湖上试验结果表明:基于M FSK的多载波水声通信系统,多径抑制有效,对同步的精确度要求不高,性能稳健,更适合于恶劣水声通信环境下、中距离(10~30km)较高数据率多载波通信系统,易于工程实现,具有良好的应用前景。
Based on the deep research on the characteristics of underwater acoustic communication and the key technologies of multi-carrier, this paper designs and develops a high-speed adaptive multi-carrier underwater acoustic communication system based on M FSK. Theoretical analysis, simulation and experimental results on the lake show that multi-carrier underwater acoustic communication system based on M FSK is effective for multipath suppression and has low requirements on the accuracy of synchronization and robust performance. It is more suitable for underwater acoustic communication with poor range, (10 ~ 30km) higher data rate multi-carrier communication system, easy to implement, with good application prospects.