摘要
舰船的辐射噪声是舰船在航行或运转过程中的一种自身属性。提取舰船辐射噪声的特征是对舰船自身属性的总结和归纳,有利于更深一步地了解舰船。同时,其特征可作为监测舰船性能的技术指标,对舰船的维护和保养有重要意义。倒谱是一种信号处理的分析方法,本文从倒谱的定义出发分析倒谱的应用范围,结合舰船辐射噪声的特点,在理论上论述了倒谱在舰船辐射噪声特征提取中的可行性及应用条件。然后,用仿真信号和实例信号对理论进行证明。
Warship radiated noise is a kind of self property when the warship is navigating or working. Extract the characteristic of warship radiated noise is sum up of warship self property, and in favor of know the warship deeper. At the same time the characteristic can be used for the technical indexes in monitoring the warship performance and has an important significance in warship maintenance. Cepstrum is a kind of analysis method in signal processing. In the paper it analyses cepstrum＇s application filed from its definiens, and discussed cepstrum＇s feasibility and application condition in warship radiated noise characteristic extraction in theory, according to warship radiated noise feature. And then, the theory is proved by analysis of emulation signal and practice signal.
出处
《舰船科学技术》
2009年第2期84-87,共4页
Ship Science and Technology
关键词
倒谱
舰船辐射噪声
特征提取
cepstrum
warship radiated noise
characteristic extraction
