Signal Enhancement of Nonsynchronized Measurements for Frequency Domain System Identification

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The possibilities of an a posteriori synchronization of nonsynchronized data records are investigated for the purpose of signal enhancement of a periodic signal. The theoretical background for an effective frequency domain method is given, and the errors of the averaged complex amplitudes are calculated. The time delay between records is identified via maximum likelihood estimation, which is slightly modified in order to improve computational effectiveness. The results are supported by simulations.

Original languageEnglish
Pages (from-to)156-159
Number of pages4
JournalIEEE Transactions on Instrumentation and Measurement
Issue number1
Publication statusPublished - Feb 1992



  • Signal processing
  • ensemble averaging
  • noise suppression
  • signal enhancement
  • synchronization
  • system identification
  • time delay estimation

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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