| 不同时频分析方法综合检测信号 |
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| 引用本文： | 郭汉伟,梁甸农,董臻.不同时频分析方法综合检测信号[J].信号处理,2003,19(6):586-589. |
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| 作者姓名： | 郭汉伟 梁甸农 董臻 |
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| 作者单位： | 湖南长沙国防科技大学电子科学与工程学院,湖南,410073 |
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| 摘 要： | 本文讨论了不同时频分析方法的性能,线性时频分析方法稳健,但精度有限;非线性时频分析方法如:威格纳分布精度高,但是不稳健,对噪声敏感,多信号情况下存在交叉项的问题。本文将线性和非线性的时频分析方法结果按照与的规则进行综合,得到了稳健的高分辨的时频分布结果。
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| 关 键 词： | 时频分析 威格纳分布 短时傅立叶交换 小波变换 |
| 修稿时间： | 2002年10月24 |
Signal Detection By Different Time-Frequency Analysis Method Synthesis |
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| Guo Hanwei Liang Diannong Dong Zhen.Signal Detection By Different Time-Frequency Analysis Method Synthesis[J].Signal Processing,2003,19(6):586-589. |
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| Authors: | Guo Hanwei Liang Diannong Dong Zhen |
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| Abstract: | We discuss on the performance of several time-frequency analysis methods for signal detection here. Linear time-frequency analysis methods are robust, but its resolution is limited. Nonlinear time-frequency analysis methods with good resolution are not robust. On the other, Nonlinear methods suffer from cross-term for multi-signal. Nonlinear and linear time-frequency analysis method synthesis can obtain robust result with good resolution. |
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| Keywords: | time-frequency analysis wigner-vill distribution short time fourier transform wavelet transform |
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