摘要
随着当今时代对海洋资源的大力开发,人们对水声通信质量的要求变得越来越高,在进行水声通信时,抗多径效应的研究尤为突出.为了得到更好的抗多径效果,首先研究了几种常用抗多径技术的性能及特点.然后通过将扩频通信技术和单载波频域均衡技术有机结合的方式来实现更有效的抗多径效应,并将这种改进的抗多径技术(基于扩频系统的单载波频域均衡技术)运用到水声通信系统中,进行舟山浅海海域水下通信实验.对比改进前后的通信效果发现,改进后的抗多径效果更佳.结果表明:运用这种基于扩频的单载波频域均衡法能改进水声通信系统的通信质量,为进一步研究抗多径技术提供了一定的参考.
Nowadays,people pay more attention to developing the Marine resources,and searching for more high quality of underwater acoustic communications,in which the anti-multipath technology is particularly important.In order to achieve better anti-multipath effect,in this paper we study the properties and characteristics of several common anti-multipath technology.Then,we use the method of organic combination spread spectrum communication technology and the single carrier frequency domain equalization technology to implement more effective anti-multipath.Also used is the improvement of anti-multipath technique(the single carrier frequency domain equalization technology based on spread spectrum system),which is utilized in Zhoushan shallow sea underwater communication experiments.Based on the contrast of before-and-after improvement of anti-multipath technology,we find that the presented method provides better resistance to multipath effect.We come to the conclusion that the method of single carrier frequency domain equalization technology based on spread spectrum can improve the quality of underwater acoustic communication,and can provide a certain reference for further research on anti-multipath techniques.
作者
蔡晓冬
宗振
刘玉良
CAI Xiao-dong;ZONG Zhen;LIU Yu-liang(School of Naval Architecture and Ocean Engineering,Zhejiang Ocean University,Zhoushan316022,China;Key Laboratory of Offshore Engineering and Technology of Zhejiang Province,Zhoushan316022,China)
出处
《宁波大学学报（理工版）》
CAS
2018年第1期46-51,共6页
Journal of Ningbo University：Natural Science and Engineering Edition
基金
浙江省自然科学基金(LY13E090004)
关键词
水声通信
多径效应
扩频
单载波频域均衡
underwater acoustic communication
multipath effect
spread spectrum
single carrier frequency
