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Compensation of the laser parameters fluctuations in large ring laser gyros: a Kalman filter approach

Beghi, Alessandro and Belfi, Jacopo and Beverini, Nicolò and Bouhadef, B. and Cuccato, D. and Virgilio, Angela Di and Ortolan, Antonello (2012) Compensation of the laser parameters fluctuations in large ring laser gyros: a Kalman filter approach. arXiv .

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Abstract

He-Ne ring laser gyroscopes are, at present, the most precise devices for absolute angular velocity measurements. Limitations to their performance come from the non--linear dynamics of the laser. Following the Lamb semi-classical theory, we find a set of critical parameters affecting the time stability of the system. We propose a method for estimating the long term drift of the laser parameters and for filtering out the laser dynamics effects from the rotation measurement. The parameter estimation procedure, based on the perturbative solutions of the laser dynamics, allow us to apply Kalman Filter theory for the estimation of the angular velocity. Results of a comprehensive Monte Carlo simulation and results of a preliminary analysis on experimental data from the ring laser prototype G-Pisa are shown and discussed.

Item Type: Article
Additional Information: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/01 - Fisica sperimentale
Divisions: Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA
Depositing User: dott.ssa Sandra Faita
Date Deposited: 29 Jan 2014 23:44
Last Modified: 29 Jan 2014 23:44
URI: http://eprints.adm.unipi.it/id/eprint/1631

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