| 基于小波重排的多项式调频信号分析 |
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| 引用本文： | 程柏林,李海鸿,刘志.基于小波重排的多项式调频信号分析[J].电子信息对抗技术,2009,24(5):1-5. |
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| 作者姓名： | 程柏林 李海鸿 刘志 |
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| 作者单位： | 1. 空军雷达学院,武汉,430019
2. 95666部队,成都,610041 |
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| 基金项目： | 国防预研基金资助项目 |
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| 摘 要： | 针对常规时频方法用于多项式调频信号分析的不足,提出基于小波重排的方法,解决多项式调频信号交叉项干扰和时频聚集性之间的矛盾。该方法具有较好的抗噪声性能。在对小波重排原理进行综述的基础上,将其用于对多项式调频信号进行时频分析,并与其它方法进行了比较。仿真实验表明,小波重排方法具有综合优势。
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| 关 键 词： | 多项式调频信号 小波变换 时频重排 |
Polynomial Frequency Modulation Signal Based on Wavelet-Reassignment Method |
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| Authors: | CHENG Bo-lin LI Hai-hong LIU Zhi |
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| Affiliation: | CHENG Bo-lin1,LI Hai-hong1,LIU Zhi2(1.Airforce Radar Academy,Wuhan 430019,China,2.Unit 95666 of PLA,Chengdu 610041,China) |
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| Abstract: | The method based on wavelet transform and time-frequency reassignment is proposed instead of conventional time-frequency measure which has the shortcomings of low precision and cross-term in polynomial frequency modulation signal analysis.It not only overcomes the contradiction between the cross terms of polynomial frequency modulation signal and the approximate time-frequency centering,but also is good at suppressing noise.The principle and application of wavelet-reassignment are summarized,and the polynom... |
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| Keywords: | polynomial frequency modulation signal wavelet transform time-frequency reassignment |
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