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|
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|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.4401/ag-3637|
|Appare nelle tipologie:||01 - Articolo su periodico|