利用Radon-Wigner变换提高LFM信号的时频DOA估计性能

被引：6
|
作者：
胡航
机构：
[1] 哈尔滨工业大学电子与信息技术研究院
来源：
哈尔滨工业大学学报 | 2009年 / 41卷 / 07期
关键词：
Radon-Wigner变换; DOA估计; 时频分析; 交叉项抑制;
D O I：
暂无
中图分类号：
TN911.7 [信号处理];
学科分类号：
0711 ; 080401 ; 080402 ;
摘要：
本文采用Radon-Wigner变换作为时频工具,在多目标环境下有效地抑制交叉干扰项和噪声,具有很好的时频汇聚性.模拟结果表明,在多LFM信号情况下,与基于PWVD和SPWVD的方法相比,基于Ra-don-Wigner变换的方法的DOA估计精度有显著提高;且其方向估计性能基本不随SNR的下降而恶化,这对于在低SNR环境下进行DOA估计十分有利.
引用
收藏
页码：26 / 29
页数：4
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