| 多分量信号快速时频分析方法 |
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| 引用本文： | 荣海娜,张葛祥,金炜东.多分量信号快速时频分析方法[J].电路与系统学报,2010,15(5). |
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| 作者姓名： | 荣海娜 张葛祥 金炜东 |
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| 作者单位： | 西南交通大学,电气工程学院,四川,成都,610031 |
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| 基金项目： | 国家自然科学基金资助项目，四川省杰出青年基金项目 |
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| 摘 要： | 针对目前多分量时频分析方法计算复杂度高,难以实现持续信号实时处理的问题,提出一种多分量信号快速时频分析方法。该方法通过信号流逐窗时频变换,实现信号的快速时频分析,其主要计算过程为短时傅立叶变换,时间和空间复杂度低,易于工程实现。性能分析结果表明:该方法时频分辨率高,避免了交叉项干扰,能有效分析低信噪比信号。
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| 关 键 词： | 时频分析 多分量信号 计算复杂度 |
A fast time-frequency analysis method for multi-component signals |
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| RONG Hai-na,ZHANG Ge-xiang,JIN Wei-dong.A fast time-frequency analysis method for multi-component signals[J].Journal of Circuits and Systems,2010,15(5). |
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| Authors: | RONG Hai-na ZHANG Ge-xiang JIN Wei-dong |
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| Affiliation: | RONG Hai-na,ZHANG Ge-xiang,JIN Wei-dong ( School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031,China ) |
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| Abstract: | The existing time-frequency analysis methods for multi-component signals have extremely high computational complexity and therefore have many difficulties in real-time signal processing. To solve this problem, a fast time-frequency analysis method for multi-component signals is proposed. Through using the time-frequency transform of signal stream window by window in time domain, the method fulfills speedily time-frequency analysis of signals. The main calculation of this method lies in Short Time Fourier Tr... |
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| Keywords: | S-method |
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