| 低信噪比下相位编码信号脉内特征提取新方法 |
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| 引用本文： | 陈昌孝,何明浩,秦江敏,韩俊. 低信噪比下相位编码信号脉内特征提取新方法[J]. 航天电子对抗, 2007, 23(2): 55-58 |
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| 作者姓名： | 陈昌孝 何明浩 秦江敏 韩俊 |
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| 作者单位： | 空军雷达学院研究生管理大队,湖北,武汉,430019;空军雷达学院训练部,湖北,武汉,430019;空军雷达学院科研部,湖北,武汉,430019 |
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| 摘 要： | 针对低信噪比条件下相位编码信号的相位估计容易受噪声影响的问题,提出了将自适应阈值消噪技术与小波变换结合起来的新方法.首先利用连续小波变换计算信号的小波谱,再对小波谱进行自适应阈值消噪处理,进而提取小波谱脊线,得到相位编码信号的脉内调制信息.计算机仿真验证了该方法的可行性.
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| 关 键 词： | 自适应阈值 相位编码 脉内特征 小波变换 |
| 修稿时间： | 2006-10-08 |
A new method of extracting in-pulse characteristics from PSK signal in low SNR |
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| Chen Changxiao,He Minghao,Qin Jiangmin,Han Jun. A new method of extracting in-pulse characteristics from PSK signal in low SNR[J]. Aerospace Electronic Warfare, 2007, 23(2): 55-58 |
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| Authors: | Chen Changxiao He Minghao Qin Jiangmin Han Jun |
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| Abstract: | Aiming at the problem of estimate the phase of PSK in low SNR,a new method combined the Wavelet transform with the technology of adaptive threshold is proposed.The Wavelet spectrum of signals are calculated by continuum Morlet continuum Wavelet transform at first;then noise is restrained by adaptive threshold;the in-pulse characteristics of PSK is gained by extracting the ridge of the spectrum at last.Simulations approve the feasibility of the method. |
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| Keywords: | adaptive threshold PSK in-pulse characteristics Wavelet transform |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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