Noise parametric identification and whitening for LIGO 40-meter interferometer data

Details Noise parametric identification and whitening for LIGO 40-meter interferometer data Noise parametric identification and whitening for LIGO 40-meter interferometer data

2001-04-23

arxiv.org/abs/gr-qc/0104071v2

Phys.Rev. D64 (2001) 122002

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, 15 figures, accepted for publication by Physical Review D

Scientific paper

10.1103/PhysRevD.64.122002

We report the analysis we made on data taken by Caltech 40-meter prototype interferometer to identify the noise power spectral density and to whiten the sequence of noise. We concentrate our study on data taken in November 1994, in particular we analyzed two frames of data: the 18nov94.2.frame and the 19nov94.2.frame. We show that it is possible to whiten these data, to a good degree of whiteness, using a high order whitening filter. Moreover we can choose to whiten only restricted band of frequencies around the region we are interested in, obtaining a higher level of whiteness.

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