A broad-band power spectrum analyzer based on twin-channel delayed sampling

Mirri, Domenico ; Iuculano, Gaetano ; Pasini, Gaetano ; Filicori, Fabio ; Peretto, Lorenzo (1998) A broad-band power spectrum analyzer based on twin-channel delayed sampling. IEEE Transactions on Instrumentation and Measurement, 47 (5). pp. 1346-1354. ISSN 0018-9456
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Abstract

This paper describes a power spectrum analyzer whose bandwidth is not limited by the mean sampling time. The procedure is based on the estimation of the spectral components of the autocorrelation function of the input signal through the simultaneous random sampling of the given input signal and its randomly “delayed copy”. The samples are therefore randomly taken in a double-dimension space, time, and delay. By using a random process in the time domain with a recursive mean previously introduced by the authors in order to avoid any bandwidth limitation due to the sampling strategy, it is shown both theoretically and through simulation that the estimate of the power spectral components is asymptotically unbiased on the unique hypothesis of a synchronized random sampling in the delay domain, i.e., the sampling delays are uniformly distributed in an interval equal to the period of the input signal. The simulation results confirm the theoretical findings

Abstract
Tipologia del documento
Articolo
Autori
AutoreAffiliazioneORCID
Mirri, Domenico
Iuculano, Gaetano
Pasini, Gaetano
Filicori, Fabio
Peretto, Lorenzo
Parole chiave
correlation methods, delays, power measurement, random processes, signal sampling, spectral analysers
Settori scientifico-disciplinari
ISSN
0018-9456
DOI
Data di deposito
28 Mar 2006
Ultima modifica
31 Ott 2012 11:41
URI

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