| 基于分数傅里叶变换的信号检测方法 |
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| 引用本文： | 臧顺全.基于分数傅里叶变换的信号检测方法[J].科学技术与工程,2010,10(3). |
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| 作者姓名： | 臧顺全 |
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| 作者单位： | 西安邮电学院,西安,710061 |
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| 基金项目： | 陕西省教育厅科学研究计划项目(09JK722);;陕西省教育厅科学研究计划项目(09JK723)资助 |
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| 摘 要： | 作为Fourier变换的一种广义形式,分数阶傅里叶变换(FRFT)同时融合了信号在时域和频域的信息,是一种新的时频分析方法。研究了FRFT计算分解方法,由于线性调频(LFM)信号在FRFT域呈现的冲激特性,以此实现LFM信号的检测。实验结果表明,该方法对LFM信号的检测是有效的。
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| 关 键 词： | 时频分析 分数阶傅里叶变换 离散分数阶傅里叶变换 LFM信号 |
| 收稿时间： | 2009/10/23 0:00:00 |
| 修稿时间： | 2009/10/23 0:00:00 |
Signal Detection Method Based on Fractional Fourier Transform |
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| zangshunquan.Signal Detection Method Based on Fractional Fourier Transform[J].Science Technology and Engineering,2010,10(3). |
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| Authors: | zangshunquan |
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| Institution: | Xi'an Institute of Post and Telecommunications/a>;Xi'an 710061/a>;P.R.China |
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| Abstract: | As a generalization of Fourier transform,the Fractional Fourier Transform(FRFT) contains simultaneity the time-frequency information of the signal,and is considered a new tool for time-frequency analysis.This paper discusses some steps of FRFT in signal detection based on the decomposition of FRFT.With the help of the property that a LFM signal can produce a strong impulse in the FRFT domain,the signal can be detected conveniently.Experimental analysis shows that the proposed method is effective in detectin... |
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