Method for estimating scattering coefficients of a laser gyro in operation and associated gyroscopic system
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United States of America Patent
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Dec 8, 2020
Grant Date -
Sep 21, 2017
app pub date -
Mar 8, 2017
filing date -
Mar 18, 2016
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Abstract
An iterative method for determining scattering coefficients of the cavity of a laser gyro in operation supporting two counter-propagating modes, comprises steps of: determining a set of variables dependent on characteristic physical quantities of the laser gyro, one reference variable per dependency relationship being selected from the variables; measuring values of the characteristic physical quantities of the laser gyro in operation; determining measured values of the variables; estimating, via an iterative method, estimated values of the coefficients minimising a discrepancy between the measured values of the reference variables and estimated values of the reference variables, which are estimated from the values of the coefficients and the measured values of the variables other than the reference variables; and determining estimated values of the scattering coefficients from the estimated values of the coefficients.
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