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一種基于Pad逼近對短時序列頻率和品質(zhì)因數(shù)的估計方法

曲延鋒,  國偉華,  王守覺

曲延鋒, 國偉華, 王守覺. 一種基于Pad逼近對短時序列頻率和品質(zhì)因數(shù)的估計方法[J]. 電子與信息學報, 2002, 24(8): 1054-1059.
引用本文: 曲延鋒, 國偉華, 王守覺. 一種基于Pad逼近對短時序列頻率和品質(zhì)因數(shù)的估計方法[J]. 電子與信息學報, 2002, 24(8): 1054-1059.
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.
Citation: 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.

一種基于Pad逼近對短時序列頻率和品質(zhì)因數(shù)的估計方法

Short data signal frequency and quality factor estimation algorithm based on pade approximants

  • 摘要: 該文提出了一種基于Pad逼近的譜估計方法.由于Pad通近能夠利用有限項很好地逼近對無限項的求和,文中算法適用于短時序列情況.經(jīng)過實驗仿真并與FFT方法和小波變換譜估計方法進行比較表明,該文算法具有較高的頻率分辨率和估計精度,并具有較好的品質(zhì)因數(shù).
    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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  • 丁宏,等,采用小波變換對短數(shù)據(jù)信號的譜方法,電子學報,1997,25(1),11-14.[2]P.R. Graves-Morris, Pad Approximants, Lectures delivered at a summer school held at University of Kent, The Institute of Physics, London and Bristol, July 1972:1-11.[3]W.H.Guo, Y. Z. Huang, Q. M. Wang. Resonant frequencies and quality factor for optical equilateral triangle resonators calculated by FDTD technique and Pad Approximation, IEEE Photon.Technol. Lett., 2000, 12(7), 813-815.[4]吳兆熊,等,數(shù)字信號處理(下冊),北京,國防工業(yè)出版社,1988,第四章.[5]J.A. Pereda, et al., Computation of resonant frequencies and quality factors of open dielectric resonators by a combination of finite-difference time-domain (FDTD) and Pronys methods, IEEE Microwave Guided Wave Lett., 1992, 28(11), 431-433.[6]S. Dey, R. Mittra, Efficient computation of resonant frequencies and quality factors of cavities via combination of finite-difference time-domain technique and the Pad approximation, IEEE Microwave Guided Wave Lett., 1998, 8(12), 415-417.[7]潘明海,等,利用小波變換的高性能功率譜估計算法,電子科學學刊,2000,22(4),555-559.[8]陳桂明,等,應用Matlab語言處理數(shù)字信號與數(shù)字圖像,北京,科學出版社,2000,第七章.[9]張賢達,現(xiàn)代信號處理,北京,清華出版社,1998,第四、五、十二章.
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出版歷程
  • 收稿日期:  2000-12-06
  • 修回日期:  2001-05-08
  • 刊出日期:  2002-08-19

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