| 一种基于Padé逼近对短时序列频率和品质因数的估计方法 |
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| 引用本文： | 曲延锋,国伟华,王守觉. 一种基于Padé逼近对短时序列频率和品质因数的估计方法[J]. 电子与信息学报, 2002, 24(8): 1054-1059 |
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| 作者姓名： | 曲延锋 国伟华 王守觉 |
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| 作者单位： | 1. 中国科学院半导体研究所神经网络实验室,北京,100083
2. 集成光电国家重点实验室,北京,100083 |
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| 摘 要： | 该文提出了一种基于Pade逼近的谱估计方法。由于Pade逼近能够利用有限项很好地逼近对无限项的求和,文中算法适用于短时序列情况。经过实验仿真并与FFT方法和小波变换谱估计方法进行比较表明,该文算法具有较高的频率分辨率和估计精度,并具有较好的品质因数。
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| 关 键 词： | Pad逼近 FFT 小波变换 频率分辨率 品质因数 |
| 收稿时间： | 2000-12-06 |
| 修稿时间： | 2000-12-06 |
Short data signal frequency and quality factor estimation algorithm based on pade approximants |
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| Qu Yanfeng,Guo Weihua,Wang Shoujue. Short data signal frequency and quality factor estimation algorithm based on pade approximants[J]. Journal of Electronics & Information Technology, 2002, 24(8): 1054-1059 |
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| Authors: | Qu Yanfeng Guo Weihua Wang Shoujue |
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| Affiliation: | NN Lab.,Inst. of Semiconductors hinese Academy of Sciences Beijing 100083 China;State Key Laboratory on Integrated Optoelectronics China |
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| Abstract: | In this paper a new algorithm for estimating frequency and quality factor based on Fade aproximants is given. Because Fade approximants can accelerate the convergence of sum in the discrete Fourier transform, this algorithm is also used in the frequency and quality factor estimation of short data series. The simulation results show that this algorithm can obtain higher frequency resolution, higher accuracy and better quality factor than FFT and spectrum estimation based on wavelet transformation. |
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| Keywords: | Fade approximants FFT Wavelet transform Frequency resolution Quality factor |
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