• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 22 Issue 1
Feb.  2009
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Article Contents
GAN Lu, WEI Ping, XIAO Yangcan. Single Frequency Estimator Based on Prefilter[J]. Journal of Southwest Jiaotong University, 2009, 22(1): 55-59.
Citation: GAN Lu, WEI Ping, XIAO Yangcan. Single Frequency Estimator Based on Prefilter[J]. Journal of Southwest Jiaotong University, 2009, 22(1): 55-59.

Single Frequency Estimator Based on Prefilter

  • Received Date: 04 Nov 2008
  • Publish Date: 18 Feb 2009
  • A new method for estimating the frequency of a complex sinusoid in complex white Gaussian noise was proposed to acquire a uniform performance within whole frequency estimation range.With this method,the signal-to-noise ratio(SNR) of input signal can be improved by utilizing a non-rectangle prefilter.Furthermore,compared with some conventional autocorrelation-based and phase-based methods,the new method can attain the Cramér-Rao bound(CRB) even at a low SNR value by using the iterative method.A theoretic analysis and numerical simulation show that the performance of the proposed method is uniform and good within the frequency estimation range.

     

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