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| 基于时频重排和时频脊线的信号脉内特征提取 | |
| 引用本文： | 陈昌孝,何明浩,朱元清,王志斌. 基于时频重排和时频脊线的信号脉内特征提取[J]. 数据采集与处理, 2008, 23(1): 95-99 |
| 作者姓名： | 陈昌孝 何明浩 朱元清 王志斌 |
| 作者单位： | 空军雷达学院研究生管理大队,武汉,430019;空军雷达学院训练部,武汉,430019;空军雷达学院电子对抗系,武汉,430019 |
| 摘 要： | 针对小波脊线法在提取雷达信号脉内特征时信噪比性能较差的缺点,本文基于小波变换谱,将时频重排和时频脊线相结合,提出了一种新的时频联合分析方法.该方法借助于时频重排在改善谱图时频凝聚性方面的优势,使算法的信噪比性能得到有效改善.仿真表明,在低信噪比条件下,该方法仍可得到准确的估计值. |
| 关 键 词： | 脉内特征 时频重排 小波谱 脊线 |
| 文章编号： | 1004-9037（2008）01-0095-05 |
| 收稿时间： | 2006-09-11 |
| 修稿时间： | 2007-01-15 |
Extracting In-Pulse Characteristics Based on Time-Frequency Reassignment and Time-Frequency Ridge |
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| Chen Changxiao,He Minghao,Zhu Yuanqing,Wang Zhibin. Extracting In-Pulse Characteristics Based on Time-Frequency Reassignment and Time-Frequency Ridge[J]. Journal of Data Acquisition & Processing, 2008, 23(1): 95-99 | |
| Authors: | Chen Changxiao He Minghao Zhu Yuanqing Wang Zhibin |
| Abstract: | Aiming at the poor SNR performance of wavelet-ridge in extracting in-pulse features, an novel unite method for-frequency analysis is proposed. Based on the wavelet spectrum, the time-frequency reassignment is combined with the time-frequency ridge. With time- frequency reassignment for improving the time-frequency agglomeration of the spectrum, the SNR performance of wavelet-ridge is enhanced. Simulation results approve the feasibility of the method. |
| Keywords: | in-pulse features time-frequency reassignment wavelet spectrum ridge |
| 本文献已被 维普 万方数据 等数据库收录！ | |