Volume 30 Number 3
  • E-ISSN: 1365-2478



An unwrapped phase curve from the principal values of the phase can be computed in a simple way. The validity of the unwrapping procedure is tested by exploiting the phase information in the signal's first moment. The significance of the unwrapped answer around notches in the amplitude spectrum is seriously degraded by noise.

The proposed method and the validity test are illustrated with examples.


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  1. Berkhout, A. J.1974, Related properties of minimum‐phase and zero‐phase time functions, Geophysical Prospecting, 22, 683–709.
    [Google Scholar]
  2. Oppenheim, A. V. and Schaefer, R. W.1975, Digital Signal Processing, Prentice Hall, Inglewood Cliffs, N.J .
    [Google Scholar]
  3. Tribolet, J. M.1977, A new phase unwrapping algorithm, IEEE Transactions on Acoustics Speech and Signal Processing, Volume ASSP‐25, no. 2.
    [Google Scholar]
  • Article Type: Research Article
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