Detecting weak sinusoidal signals embedded in a non-stationary random broadband noise-A simulation study

Wai Ling Lee, Shiu Keung Tang, C. M. Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

In the present study, a simple numerical function is proposed for use together with the time-frequency analysis in the detection of very weak sinusoidal signals embedded in a non-stationary random broadband background noise. Its performance is studied through the use of two numerical examples. It is found that the present method enables good recovery of the sinusoidal signals and the instants of their initiations even when the signal-to-noise ratio is down to -17 dB.
Original languageEnglish
Pages (from-to)831-844
Number of pages14
JournalJournal of Sound and Vibration
Volume304
Issue number3-5
DOIs
Publication statusPublished - 24 Jul 2007

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Mechanics of Materials
  • Mechanical Engineering

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