| 一种新的多线性调频信号时频表示 |
| |
| 引用本文： | 李英祥,肖先赐.一种新的多线性调频信号时频表示[J].电子学报,2002,30(12):1879-1881. |
| |
| 作者姓名： | 李英祥 肖先赐 |
| |
| 作者单位： | 电子科技大学电子工程学院,四川成都 610054 |
| |
| 基金项目： | 国家973重点基础研究发展规划项目(No.973-1-2-1) |
| |
| 摘 要： | 本文提出了一种用于多线性调频信号时频表示的方法.首先由Radon-Ambiguity变换设计出线状核函数,以去除噪声和多线性调频信号之间的交叉项在模糊域中的影响,再通过二维傅立叶变换得到一种新的时频表示.仿真实验证明了此方法可以有效的去除噪声和多信号之间交叉项的影响,在低信噪比下也十分有效.
|
| 关 键 词： | 线性调频信号 Radon-Ambiguity变换 核函数 模糊函数 |
| 文章编号： | 0372-2112(2002)12-1879-03 |
A New Kind of Time-Frequency Representation for Multi-LFM Signals |
| |
| LI Ying-xiang,XlAO Xian-ci.A New Kind of Time-Frequency Representation for Multi-LFM Signals[J].Acta Electronica Sinica,2002,30(12):1879-1881. |
| |
| Authors: | LI Ying-xiang XlAO Xian-ci |
| |
| Affiliation: | College of Electronic Engineering,UESTC,Chengdu,Sichuan 610054,China |
| |
| Abstract: | A method for multi-LFM signals time-frequency representation is proposed. Firstly, we use the Radon-Ambiguity transform to get the linear kernel function, which can remove the cross terms of multi-LFM signals and some part of noise in the ambiguity domain.Then we use the two-dimensional Fourier transform to get the new time frequency representation. The validity of removing noise and cross terms of this method has been shown by computer simulation even in low signal to noise ratio condition. |
| |
| Keywords: | LFM Radon-ambiguity transform kernel function ambiguity function |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子学报》浏览原始摘要信息 |
|
点击此处可从《电子学报》下载全文 |
