摘要
船载通信信号在传输过程中受各种因素的影响存在被削弱的现象,使得原始信号变成了微弱信号,如果不进行增强处理,会延长数据传输时间以及造成信噪比过小,影响通信质量。针对上述问题,提出一种基于稠密度聚类的船载通信微弱信号自动增强方法。该方法主要分为3步:第一步进行小波去噪处理,降低噪声对原始信号的干扰;第二步利用稠密度聚类方法对微弱信号进行聚类检测,加快信号增强处理效率;第三步对检测出来的信号进行补偿,增强信号特征。结果表明:与传统船载通信微弱信号自动增强方法相比,本方法处理后,数据传输延时值缩短3.8 s,信噪比增大8.3 dB,解决了传统方法存在的问题。
Ship-borne communication signals are weakened by various factors in the transmission process,which makes the original signals become weak signals.If not enhanced,it will prolong the data transmission time and cause the signal-to-noise ratio to be too small,which will affect the communication quality.To solve the above problems,an automatic enhancement method of weak signals in ship-borne communication based on dense clustering is proposed.The method consists of three steps:the first step is wavelet denoising to reduce the interference of noise to the original signal;the second step is dense clustering method to detect weak signals to speed up the efficiency of signal enhancement processing;the third step is to compensate the detected signals and enhance the signal characteristics.The results show that compared with the traditional method of automatic enhancement of weak signals in ship-borne communication,the data transmission delay value is shortened by 3.8 s and the signal-to-noise ratio is increased by 8.3 dB after the method is processed,which solves the problems existing in the traditional method.
作者
于中华
YU Zhong-hua(Sichuan Post and Telecommunication,Chengdu 610067,China)
出处
《舰船科学技术》
北大核心
2019年第8期133-135,共3页
Ship Science and Technology
关键词
稠密度聚类
船载通信微弱信号
信号增强
dense clustering
weak signal in ship-borne communication
signal enhancement
作者简介
于中华(1981–),男,硕士,讲师/工程师,研究方向为电子与通信工程及计算机网络。
