A neural network-based approach to noise identification of interferometric GW antennas: the case of the 40 m Caltech laser interferometer

Details A neural network-based approach to noise identification of interferometric GW antennas: the case of the 40 m Caltech laser interferometer A neural network-based approach to noise identification of interferometric GW antennas: the case of the 40 m Caltech laser interferometer

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cqgra..19.3293a&link_type=abstract

Classical and Quantum Gravity, Volume 19, Issue 12, pp. 3293-3307 (2002).

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In this paper, a neural network-based approach is presented for the real time noise identification of a GW laser interferometric antenna. The 40 m Caltech laser interferometer output data provide a realistic test bed for noise identification algorithms because of the presence of many relevant effects: violin resonances in the suspensions, main power harmonics, ring-down noise from servo control systems, electronic noises, glitches and so on. These effects can be assumed to be present in all the first interferometric long baseline GW antennas such as VIRGO, LIGO, GEO and TAMA. For noise identification, we used the Caltech-40 m laser interferometer data. The results we obtained are pretty good notwithstanding the high initial computational cost. The algorithm we propose is general and robust, taking into account that it does not require a priori information on the data, nor a precise model, and it constitutes a powerful tool for time series data analysis.

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