时频分析在水雷信息处理中的应用

水雷声换能器接收到的舰船辐射噪声是一个非平稳过程，以傅立叶变换为基础的传统谱分析方法已经难以发挥作用。时频分析因其在时-频域都具有表征信号局部特征的能力而成为非平稳信号分析的有力工具。利用ZAM（Zhao-Atlas—Marks）变换对数据进行时频分析处理，通过试验表明：时频分析弥补了经典傅立叶分析在非平稳信号处理中的不足，直观的说明了频率和时间的关系，有利于水雷获取信号的分析及目标的识别分类。

Research on the Application of Time frequency Distribution in Mine Information Processing

ship's noise is a non-stationary random process.The traditional approaches based on Fourier transform are usually hard to accomplish.But time-frequency analysis is a useful tool since it can provide an insight into the character of transient signals through time-frequency maps.The result of time-frequency analysis by using ZAM transform shows that it can cover the shortage of Fourier transform in non-stationary signal processing,the relationship between frequency and time are explained.It is useful for sign...