| 基于分数阶Fourier变换的多分量LFM信号检测 |
| |
| 引用本文： | 刘明玲,刘高辉. 基于分数阶Fourier变换的多分量LFM信号检测[J]. 电子科技, 2014, 27(10): 133-135 |
| |
| 作者姓名： | 刘明玲 刘高辉 |
| |
| 作者单位： | (西安理工大学 自动化与信息工程学院,陕西 西安 710048) |
| |
| 摘 要： | 分数阶Fourier变换作为最新提出的一种分析工具,其变换域同时具有信号的时域信息和频域信息,其实质是Fourier变换的一种广义形式,较适合处理非平稳信号。文中提出一种基于分数阶Fourier变换的多分量LFM信号参数估计与分离方法。通过在分数阶Fourier域搜索峰值点来对多分量LFM信号进行检测和参数估计,同时结合逐次消去思想来分离多个未知参数的LFM信号,抑制了强信号分量对弱信号分量的遮蔽干扰。
|
| 关 键 词： | 分数阶Fourier变换 LFM信号 参数估计 |
Detection of Multicomponent LFM Signal Based on Fractional Fourier Transform |
| |
| LIU Mingling,LIU Gaohui. Detection of Multicomponent LFM Signal Based on Fractional Fourier Transform[J]. Electronic Science and Technology, 2014, 27(10): 133-135 |
| |
| Authors: | LIU Mingling LIU Gaohui |
| |
| Affiliation: | (School of Automation and Information Engineering,Xi'an University of Technology,Xi'an 710048,China) |
| |
| Abstract: | As a tool of analysis,Fractional Fourier transform is put forward lately. Its transform domain both has the time domain and frequency domain information of the signal. Essentially it is a generalized form of Fourier transform suitable for processing unstable LFM signal. By searching for the peaks in the fractional Fourier domain,the multi-component LFM signal detection and parameter estimation is done. And the successive elimination thought is adopted to separate LFM signals with multiple unknown parameters. The interference of strong signal components with the weak signal components are restrained. |
| |
| Keywords: | fractional Fourier transform linear frequency modulation signal parameter estimation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子科技》浏览原始摘要信息 |
|
点击此处可从《电子科技》下载全文 |
