Litton Systems, Inc.

Daryl C Stjern, Deceased

Thomas J Hutchings

Edward Kanegsberg

Sheridan W Hammons

Edmund W Rusche, Legal Representative

Phase errors that occur when a dithered ring laser gyroscope enters its deadband are measured, and a correction is applied to the output of the ring laser gyroscope to compensate for these phase errors. The counterpropagating beams in a ring laser gyroscope are heterodyned to produce a pair of quadrature heterodyne signals that indicate the angular output of the laser ring laser gyroscope. The phase angle error between one of the heterodyne signals and either the sum or difference of the separate beam intensities is determined, The phase angle error signal is used to produce a control signal for adjusting the output of the ring laser gyroscope to correct for errors introduced at or near turnarounds in the dither cycle.

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Thousand Oaks, CA, United States of America

Daryl C Stjern, Deceased