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 language | English |
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Pages (from-to) | 831-844 |
Number of pages | 14 |
Journal | Journal of Sound and Vibration |
Volume | 304 |
Issue number | 3-5 |
DOIs | |
Publication status | Published - 24 Jul 2007 |
ASJC Scopus subject areas
- Condensed Matter Physics
- Acoustics and Ultrasonics
- Mechanics of Materials
- Mechanical Engineering