几种常用水声信号的特性研究
Research on Properties of Several Common Underwater Acoustic Signals
代伟 1刘漩1
作者信息
摘要
水声信号是水下导航定位通信的主要信息载体,对其特性进行研究尤为重要.水声常用信号主要有连续波信号、线性调频信号和双曲线调频信号,研究了这三种常用信号的时域、频域以及功率谱波形,对它们的模糊函数、模糊度、模糊函数ξ=0和τ=0截面进行了计算,研究了这三种信号的自相关函数及小波时频分析,研究结果表明实验结果与理论值符合较好.
Abstract
Underwater acoustic signal is the major information carrier of the underwater navigation and location and communi-cation.It is important to research the properties of underwater acoustic signal.The continuous wave signal and linear frequency mod-ulation signal and hyperbolic frequency modulation signal are the common signals used in the underwater.The time domain and fre-quency domain and the power spectral density of the three signals are investigated.The ambiguity function,ambiguity scale,ξ=0 and τ=0 sections of the ambiguity function are computed by simulation.The autocorrection function and the wavelet time-frequen-cy analysis of these three signals are researched.The research results show that the experiences match well with the theory value.
关键词
频域/功率谱/模糊函数/自相关函数/小波时频分析Key words
frequency domain/power spectral density/ambiguity function/autocorrection function/wavelet time-frequen-cy analysis引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据