一个水声扩频通信系统设计与实现  

Design and realization of an underwater acoustic spread-spectrum communication system

作　　者：黄晓萍[1] 桑恩方[1] 

机构地区：[1]哈尔滨工程大学水声工程学院,黑龙江哈尔滨150001

出　　处：《海洋工程》2007年第1期127-132,共6页The Ocean Engineering

基　　金：国家自然科学基金重点资助项目(K1501060508)

摘　　要：严重的多途衰落、多普勒频偏是水声通信中引起误码的主要原因。低功耗、远距离、高隐蔽性、低信噪比检测、高可靠性的数据传输是水声通信的一个发展方向。设计并实现了一个水声扩频通信系统,有效地解决了以上问题,并采用快速相关算法,代替传统的矢量与矩阵相乘运算,极大地减少了程序的运行量,从而实时地处理接收信号。通过湖试和海试,验证了此通信系统的优良性能。The main reasons of bit-errer-mte in underwater acoustic communication are serious multipath fading and Doppler shift. The direction of underwater acoustic communication＇ s development is the data transmission with low power, long distance, low signal noise ratio （SNR） detection and low bit-errer-rate. An underwater acoustic spread-spectrum communication system is designed and realized, which can solve the problems said above effectively. A fast arithmetic of correlation operation is also adopted instead of conventional multiplicative operations of vector and matrix. By this fast arithmetic the operation amount of program is reduced greatly and the received signal can be processed in real time. The perfect performances of this communication system are validated by lake trial and sea trial.

关 键 词：扩频 M序列 多途 水声通信 

分 类 号：TB56[交通运输工程—水声工程]