Drift removal procedures for psd calculation

U. Bertocci, F. Huet, R. Nogueira, P. Rousseau

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations


Removing DC trends before calculating power spectral densities is a necessary operation, but the choice of the method is probably one of the most difficult problems in electrochemical noise measurements. The procedure must be simple and straightforward, must effectively attenuate the low frequency components without eliminating useful information or create artifacts. Several procedures will be presented, including moving average removal, linear detrending, polynomial fitting, analog or digital high-pass filtering, and their effect on electronic and electrochemical signals discussed. The results show that the best technique appears to be polynomial detrending On the contrary, the recently proposed moving average removal method was found to have considerable drawbacks and its use should not be recommended.

Original languageBritish English
JournalNACE - International Corrosion Conference Series
StatePublished - 2001
EventCorrosion 2001 - Houston, United States
Duration: 11 Mar 200116 Mar 2001


  • Corrosion Monitoring
  • Current drift
  • Electrochemical noise
  • High-pass filtering
  • Moving average removal
  • Noise resistance
  • Power spectral density
  • Voltage drift


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