Research on the Sampling Frequency’s Range to Improve the Precision of All-Phase FFT Phase Measurement

Hao Hua Qin

doi:10.4028/www.scientific.net/AMR.538-541.2147

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 538-541Research on the Sampling Frequency’s Range to...

Research on the Sampling Frequency’s Range to Improve the Precision of All-Phase FFT Phase Measurement

Abstract:

To improve the precision of all-phase FFT (apFFT for short) phase measurement, this paper takes full advantages of the basic properties of apFFT spectral analysis and deduce the distribution range of sampling frequency. And through simulation experiment, this deduced range is verified. Moreover this paper points that, in contrast to the case of FFT, apFFT can acquire the high precision of phase measurement in a relatively wide range, which means that the hardware cost can be reduced. Therefore the proposed research is of both high theoretic value and of high engineering significance.

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Periodical:

Advanced Materials Research (Volumes 538-541)

Pages:

2147-2152

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.538-541.2147

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Online since:

June 2012

Authors:

Hao Hua Qin

Keywords:

All-Phase FFT, Phase Measurement, Sampling Frequency, Spectral Analysis

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