| WVD的快速计算 |
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| 引用本文： | 曹家麟,陈光化.WVD的快速计算[J].上海大学学报(英文版),2003,7(3):265-269. |
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| 作者姓名： | 曹家麟 陈光化 |
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| 作者单位： | School of Mechanical and Electronic Engineering and Automation，Shanghai University，Shanghai 200072，China，School of Mechanical and Electronic Engineering and Automation，Shanghai University，Shanghai 200072，China |
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| 摘 要： | The paper proposes a new method for computation of the Wigner-Ville distribution (WVD) taking account of the conjugate symmetry of the WVD kernel function and the periodicity and symmetry of the trigonometric function. The method transfers the computation of WVD into real field from complex field to remove the redundancies in the fast Fourier transform(FFT) computation. The realization of fast cosine operation and fast sine operation considerably reduces the computation cost. Theoretical analysis shows that
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| 关 键 词： | Wigner-Ville分布 WVD 快速计算 快速傅立叶变换 快速正弦运算 快速余弦运算 |
| 收稿时间： | 15 October 2002 |
Fast computation of wigner-ville distribution |
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| Cao?Jia-Lin,Chen?Guang-Hua.Fast computation of wigner-ville distribution[J].Journal of Shanghai University(English Edition),2003,7(3):265-269. |
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| Authors: | Cao Jia-Lin Chen Guang-Hua |
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| Institution: | School of Mechanical and Electronic Engineering and Automation, Shanghai University, Shanghai 200072, China |
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| Abstract: | The paper proposes a new method for computation of the Wigner-Ville distribution (WVD) taking account of the conjugate symmetry of the WVD kernel function and the periodicity and symmetry of the trigonometric function. The method transfers the computation of WVD into real field from complex field to remove the redundancies in the fast Fourier transform(FFT) computation. The realization of fast cosine operation and fast sine operation considerably reduces the computation cost. Theoretical analysis shows that the algorithm provided in the paper is much more advantageous than the existed ones. |
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| Keywords: | WVD fast cosine operation fast sine operation |
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