摘要
在分析局域波分解原理的基础上,研究了雷达辐射源信号经过局域波分解后的分解分量的物理意义和抗交叉干扰等时频特性,并提取了六种经典辐射源信号的瞬时频率特征和相位编码信号的逐步波动特征。仿真实验表明,与传统方法相比,使用基于局域波分解的时频分析方法更有效地消除了信号分量干扰、提高了频率分辨率,并能自适应地改变基函数并解决了信号时频局部化问题,为辐射源信号的脉内特征分析提供了一种新思路。
This paper researched the time-frequency characteristics of the radar emitter signal such as components＇ physics meaning and restraining mutual interferences of the multi-component, based on the local wave decomposition. Abstracted the instantaneous frequency features and wave features. Simulation experiments show that this method has better characteristics on the restraining mutual interferences of muhi-components, improving frequency resolution and localized time-frequency of signals than tradition methods. It is new method for the feature analysis of radar emitter signals.
出处
《计算机应用研究》
CSCD
北大核心
2008年第10期3142-3144,3152,共4页
Application Research of Computers
基金
国家自然科学基金资助项目(60572143
60702026)
关键词
局域波
雷达辐射源
瞬时频率
时频分析
local wave
radar emitter
instantaneous frequencies
time-frequency analysis
