| 基于相位重构的相位编码信号脉内特征分析 |
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| 引用本文： | 李平,唐宏,李哲.基于相位重构的相位编码信号脉内特征分析[J].航天电子对抗,2010,26(3):30-33. |
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| 作者姓名： | 李平 唐宏 李哲 |
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| 作者单位： | 空军工程大学导弹学院,陕西,三原,713800 |
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| 摘 要： | 基于希尔伯特变换，提出了一种相位编码信号相位无模糊重构的脉内特征分析方法。该方法一方面利用魏格纳-威利变换对信号进行降噪处理，改善了在低信噪比下相位编码信号脉内特征识别和提取能力；另一方面对重构相位进行多阶差分处理来提高识别精度。仿真结果验证了该方法的正确性和有效性。
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| 关 键 词： | 魏格纳-威利变换 希尔伯特变换 相位重构 脉内特征 |
Analysis of the intrapulse characteristic of phase-coded signal based on phase restoral |
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| Li Ping,Tang Hong,Li Zhe.Analysis of the intrapulse characteristic of phase-coded signal based on phase restoral[J].Aerospace Electronic Warfare,2010,26(3):30-33. |
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| Authors: | Li Ping Tang Hong Li Zhe |
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| Institution: | (The Missile Institute, Air Force Engineering University, Sanyuan 713800, Shanxi, China) |
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| Abstract: | A novel intrapulse characteristic of phase-coded signal analysis method is proposed, which based on Hilbert demodulation. On the one hand, the additive noise embedded in the signal can be reduced by using the Wigner-Ville distribution, which can improve the intrapulse characteristic of PSK signal recognition and extraction ability;on the other hand,multistage difference to restoral phase is used to increase the recognition precision. The simulation results confirm that this method is accurate and effective. |
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| Keywords: | WVD Hilbert demodulation phase restoral intrapulse characteristic |
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