The Contrastive Study between Direct FFT and Phase Difference in Parameter Estimation of Sinusoidal Signal

Li Hui; Wang Yan-fei

doi:10.3724/SP.J.1146.2008.01006

Volume 32 Issue 3

Aug. 2010

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Article Navigation > Journal of Electronics & Information Technology > 2010 > 32(3): 544-547

Li Hui, Wang Yan-fei. The Contrastive Study between Direct FFT and Phase Difference in Parameter Estimation of Sinusoidal Signal[J]. Journal of Electronics & Information Technology, 2010, 32(3): 544-547. doi: 10.3724/SP.J.1146.2008.01006

Citation:

Li Hui, Wang Yan-fei. The Contrastive Study between Direct FFT and Phase Difference in Parameter Estimation of Sinusoidal Signal[J]. Journal of Electronics & Information Technology, 2010, 32(3): 544-547. doi: 10.3724/SP.J.1146.2008.01006

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The Contrastive Study between Direct FFT and Phase Difference in Parameter Estimation of Sinusoidal Signal

doi: 10.3724/SP.J.1146.2008.01006

Li Hui,
Wang Yan-fei^①

Received Date: 2008-08-14
Rev Recd Date: 2009-12-30
Publish Date: 2010-03-19

Abstract

Abstract

This paper firstly studies parameter estimation issue directly based on FFT. Thereby, the relationship between the frequency and phase estimation is exposed. Subsequently, the estimation error formula of phase difference arithmetic are deduced and validated by computer simulation. The compare of two methods shows that phase difference arithmetic possesses lesser calculation quantity. Simultaneously, it can gain highly accurate, mutually independent parameter estimation under low SNR. So phase difference arithmetic is easy to realize in engineering field much more.

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References(1)

References

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