| 基于小波Radon变换检测线性调频信号 |
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| 引用本文： | 郭汉伟,王岩,杨风风,梁甸农.基于小波Radon变换检测线性调频信号[J].国防科技大学学报,2003,25(1):91-94. |
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| 作者姓名： | 郭汉伟 王岩 杨风风 梁甸农 |
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| 作者单位： | 国防科技大学电子科学与工程学院,湖南,长沙,410073 |
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| 基金项目： | 国防重点实验室基金项目(51431020101KG01) |
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| 摘 要： | 对信号小波分析的结果进行Radon变换,简称小波Radon变换。通常情况下,线性调频信号小波变换的结果在时间尺度图上呈现曲线的形式,而在时频图上呈现直线的形式。通过Radon变换检测时频平面上的直线,可以精确地得到调频信号的参数。仿真结果表明,小波Radon变换是一种较好的线性调频信号检测方法。
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| 关 键 词： | 小波RADON变换 线性调频信号 时间尺度图 时频分布 |
| 文章编号： | 1001-2486(2003)01-0091-04 |
| 收稿时间： | 2002/8/28 0:00:00 |
| 修稿时间： | 2002年8月28日 |
Linear Chirp Signals Detection by Wavelet-Radon Transform |
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| GUO Hanwei,WANG Yan,YANG Fengfeng and LIANG Diannong.Linear Chirp Signals Detection by Wavelet-Radon Transform[J].Journal of National University of Defense Technology,2003,25(1):91-94. |
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| Authors: | GUO Hanwei WANG Yan YANG Fengfeng and LIANG Diannong |
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| Institution: | College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | Wavelet-Radon transform is defined that results of wavelet analysis are Radon-transformed. Results of wavelet analysis of linear chirp signals are curves on time scale scheme in general. However, Results of wavelet analysis of linear chirp signals are beelines on time frequency scheme. Radon-transform can detect beeline perfectly and the parameters of linear chirp signals are obtained exactly. The simulation experiment results prove that Wavelet-Radon transform is a good method of linear chirp signals detection. |
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| Keywords: | Wavelet-Radon transform linear chirp signals time-scale scheme time-frequency scheme |
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