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| 一种新的Morlet小波及其在雷达信号特征提取中的应用研究 | |
| 引用本文： | 余志斌,陈春霞,金炜东.一种新的Morlet小波及其在雷达信号特征提取中的应用研究[J].电路与系统学报,2010,15(1). |
| 作者姓名： | 余志斌 陈春霞 金炜东 |
| 作者单位： | 1. 西南交通大学,信息科学与技术学院,四川,成都,610031 2. 成都电子机械高等专科学校,机械工程系,四川,成都,610031 3. 西南交通大学,电气工程学院,四川,成都,610031 |
| 基金项目： | 国家自然科学基金(60572143;60702026) |
| 摘 要： | 为准确估计雷达信号的瞬时频率,文中提出了一种基于新Morlet小波原子提取信号小波脊线的方法。通过分析小波脊线原理,使用新Morlet小波原子提取雷达辐射源信号的小波脊线特征。同时,针对不同调制类型的雷达信号,根据小波分解时—频约束关系,分析了正确提取信号脊线特征的条件。仿真实验表明,与普通Morlet小波原子相比,基于改进的Morlet小波提取信号脊线特征具有较强的检测概率和抗噪性能,其方法的有效性为实验结果所证实。 |
| 关 键 词： | 小波脊线 瞬时频率 雷达信号 小波原子 |
A new Morlet wavelet and its application in radar signal feature extraction |
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| YU Zhi-bin,CHEN Chun-xia,JIN Wei-dong.A new Morlet wavelet and its application in radar signal feature extraction[J].Journal of Circuits and Systems,2010,15(1). | |
| Authors: | YU Zhi-bin CHEN Chun-xia JIN Wei-dong |
| Affiliation: | 1. School of Information Science & Technology;Southwest Jiaotong University;Chengdu 610031;China;2. Mechanical Engineering Department;Chengdu Electromechanical College;3. School of Electrical Engineering;China |
| Abstract: | In order to improve the precision of estimating the instantaneous frequency in radar signal processing, a new approach concerning the signal wavelet ridge feature(WRF) extraction, is proposed based on a new Morlet wavelet atom. In this method, the wavelet ridge principium is analyzed, and the proposed Morlet wavelet atom is used to extract the WRF of radar emitter signals. In addition, based on the time-frequency constraint characteristics in signal wavelet decomposition, the constraint-conditions of signal... |
| Keywords: | wavelet ridge instantaneous frequency radar signal wavelet atom |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |