摘要
水声信道是一种多途、时变和频散的信道,声波在其中的传输行为十分复杂,在水声通信中,扩频通信具有可靠性高、隐蔽性好、抗多径能力强等特点,适合于远程或低信噪比情况下的通信。文中设计了DS-DPSK水声通信系统的方案,并给出系统性能仿真结果。
The hydroacoustic channel is a multi-path,time-varying and frequency dispersion channel,it is extremely complex that acoustic wave transports in this channel.In the hydroacoustic communication,the spread spectrum communication is reliable,hidden and strong ability of resisting multi-path,so it is suitable for the long-range or low SNR.This thesis designs the scheme of DS-DPSK communication system,and give a result of performance simulation.
出处
《舰船科学技术》
2009年第10期120-122,共3页
Ship Science and Technology
关键词
水声通信
扩频
信噪比
hydroacoustic communication
spread spectrum
signal-to-noise ratio
