Ring laser lock-in correction apparatus

Details Ring laser lock-in correction apparatus Ring laser lock-in correction apparatus

1982-09-20

1987-02-10

Buczinski, Stephen C.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

372 29, 372 94, G01B 902

Patent

active

046419705

ABSTRACT:
In the present application, an apparatus is provided for altering a ring laser angular rate sensor in such a way that the phase difference between the propagating waves therein includes lock-in error compensation. The apparatus of the present invention obtains a compensation output signal derived from the intensity of one or both of the propagating waves related to sensor lock-in error which can be utilized to alter the behavior of the ring laser so as to alter the behavior of the phase difference between the counter-propagating waves so that lock-in error contained therein is corrected.

REFERENCES:
patent: 4152071 (1979-05-01), Podgorski
patent: 4320974 (1982-03-01), Ljung
patent: 4397027 (1983-08-01), Zampiello et al.
patent: 4422762 (1983-12-01), Hutchings et al.
patent: 4445779 (1984-05-01), Johnson
patent: 4481635 (1984-11-01), Broberg et al.

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