| 一个水声扩频通信系统设计与实现 |
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| 引用本文： | 黄晓萍,桑恩方.一个水声扩频通信系统设计与实现[J].海洋工程,2007,25(1):127-132. |
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| 作者姓名： | 黄晓萍 桑恩方 |
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| 作者单位： | 哈尔滨工程大学,水声工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金重点资助项目(K1501060508) |
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| 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。
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| 关 键 词： | 扩频 m序列 多途 水声通信 |
| 文章编号： | 1005-9865（2007）01-0127-06 |
| 修稿时间： | 2006-04-30 |
Design and realization of an underwater acoustic spread-spectrum communication system |
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| HUANG Xiao-ping,SANG En-fang.Design and realization of an underwater acoustic spread-spectrum communication system[J].Ocean Engineering,2007,25(1):127-132. |
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| Authors: | HUANG Xiao-ping SANG En-fang |
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| Institution: | College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China |
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| Abstract: | The main reasons of bit-error-rate 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-error-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. |
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| Keywords: | spread spectrum m sequence multi-path underwater acoustic communication |
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