Electrical and electromagnetic methods often require the determination of the amplitude of a periodic signal, produced by controlled sources and masked by natural and artificial noise. Since noise is usually random and uncorrelated, several techniques based on a stacking procedure and spectral decomposition are applied. In this paper we revise some of these procedures based on Fourier analysis. We propose a technique which uses "super-averaged" functions obtained from the average of the results of the Fourier analysis from the whole data set.
Determination of electrical signal masked by random noise using "super-averaged" functions / L. Alfano, M. Giudici. - In: ANNALI DI GEOFISICA. - ISSN 1590-1815. - 43:2(2000), pp. 249-258.
Titolo: | Determination of electrical signal masked by random noise using "super-averaged" functions |
Autori: | GIUDICI, MAURO (Ultimo) |
Parole Chiave: | electrical methods; electromagnetic methods; data acquisition; data processing; signal-to-noise ratio |
Settore Scientifico Disciplinare: | Settore GEO/11 - Geofisica Applicata |
Data di pubblicazione: | 2000 |
Rivista: | |
URL: | http://www.annalsofgeophysics.eu/index.php/annals/article/view/3637 |
Tipologia: | Article (author) |
Digital Object Identifier (DOI): | http://dx.doi.org/10.4401/ag-3637 |
Appare nelle tipologie: | 01 - Articolo su periodico |