Ring laser gyro having two magnetic mirrors

Details Ring laser gyro having two magnetic mirrors Ring laser gyro having two magnetic mirrors

1991-02-05

1992-08-11

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

372 94, 372107, G01C 1968

Patent

active

051373580

ABSTRACT:
Method and apparatus for switchably controlling the bias of a ring laser angular rate sensor using two switchably controllable magnetic mirrors for rate sensor operation away from lock-in regions. For a sensor input rate that is less than a threshold value, a control means switchably energizes each of the magnetic mirrors in a manner such that their respective optical effect is additive, one with the other, for biasing the rate sensor at a first desired operating point. For a sensor input rate that is at least equal to the threshold value, the control means switchably energizes each of the magnetic mirrors in a manner such that their respective optical effect is subtractive, one from the other, for biasing the rate sensor at a second desired operating point.

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