Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2000-11-13
Class.Quant.Grav. 18 (2001) 1727-1752
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
28 pages, 21 figures, uses iopart.cls accepted for pubblication on Classical and Quantum Gravity
Scientific paper
10.1088/0264-9381/18/9/309
In this paper we address both to the problem of identifying the noise Power Spectral Density of interferometric detectors by parametric techniques and to the problem of the whitening procedure of the sequence of data. We will concentrate the study on a Power Spectral Density like the one of the Italian-French detector VIRGO and we show that with a reasonable finite number of parameters we succeed in modeling a spectrum like the theoretical one of VIRGO, reproducing all its features. We propose also the use of adaptive techniques to identify and to whiten on line the data of interferometric detectors. We analyze the behavior of the adaptive techniques in the field of stochastic gradient and in the Least Squares ones.
Calamai Giovanni
Cuoco Elena
Fabbroni Leonardo
Losurdo Giovanni
Mazzoni Massimo
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