发明名称 |
METHOD AND SYSTEM FOR CORRECTING RANDOM WALK ERRORS INDUCED BY RATE REVERSALS IN A DITHERED RING LASER GYROSCOPE |
摘要 |
METHOD AND SYSTEM FOR CORECTING RANDOM WALK ERRORS INDUCED BY RATE REVERSALS IN A DITHERED RING LASER GYROSCOPE A correction to the output angle of a ring laser gyroscope is calculated as a function of the phase difference and the magnitude of coupling between the two counterpropagating beams when the dither oscillations change direction. A pair of heterodyne detectors produce heterodyne signals indicative of the interference pattern between the counterpropagating beams. A signal indicative of the sum of the separate beam intensities is demodulated with the heterodyne signals to determine the magnitude of coupling between the beams in the ring laser gyroscope. |
申请公布号 |
CA1290433(C) |
申请公布日期 |
1991.10.08 |
申请号 |
CA19870554211 |
申请日期 |
1987.12.14 |
申请人 |
LITTON SYSTEMS, INC. |
发明人 |
BENOIST, RODNEY W. |
分类号 |
G01C19/64;G01C19/66;G01C19/70;H01S3/083 |
主分类号 |
G01C19/64 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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