激光水下通信信号特性分析和优化研究  

Analysis and optimization of underwater laser communication signal characteristics

作　　者：唐文翰[1] 韦树贡[1] 郑鑫[1] TANG Wenhan;WEI Shugong;ZHENG Xing(College of Physics and Electronic Engineering,Guangxi Normal University for Nationalities,Chongzuo Ghuangxi 532200,China)

机构地区：[1]广西民族师范学院物理与电子信息工程学院

出　　处：《激光杂志》2019年第12期163-166,共4页Laser Journal

基　　金：广西高校中青年教师基础能力提升项目(No.2018KY0640);广西高校中青年教师基础能力提升项目(No.2017KY0841)

摘　　要：激光水下通信的环境异常复杂,当前激光水下通信信号特性分析难以进行高精度优化,使各信号中存在大量的噪声,为了提高激光水下通信信号质量,减少了噪声的干扰,设计了小波包和奇异值分解的激光水下通信信号分析和优化方法。首先对当前激光水下通信信号分析和优化方法的现状,分析噪声的因素,然后采用小波包变换原始激光水下通信信号进行多尺度分解,产生不同频率的激光水下通信子信号,最后采用奇异值算法对激光水下通信子信号进行去噪,得到优化后的激光水下通信信号,并进行了激光水下通信信号特性分析和优化的测试实验,实验结果表明,所提方法可以提高激光水下通信信号信噪比,对通信环境更加鲁棒,获得了更高质量的激光水下通信信号。The environment of laser underwater communication is very complex,and it is difficult to optimize the characteristics of laser underwater communication signal with high precision.There is a lot of noise in each signal.In order to improve the quality of laser underwater communication signal and reduce the interference of noise,the analysis and optimization method of laser underwater communication signal based on wavelet packet and singular value decomposition is designed.Firstly,the current status of analysis and optimization method of laser underwater communication signal are introduced,and the factors of noise are analyzed.Then,the original laser underwater communication signal is decomposed into multi-scale by wavelet packet transform to generate different frequency laser underwater communication sub-signal.Finally,the singular value algorithm is used to denoise the laser underwater communication sub-signal,and the optimized laser underwater communication signal is obtained.The experimental results show that,this method can improve the signal-to-noise ratio of laser underwater communication signal,be more robust to the communication environment,and can obtain higher quality laser underwater communication signal.

关 键 词：激光技术 水下通信 噪声干扰 波包变换 

分 类 号：TN279[电子电信—物理电子学]