发明名称 |
Rfog with optical heterodyning for optical signal discrimination |
摘要 |
In one embodiment a system including a resonator fiber-optic gyroscope configured to measure rotation rate is provided. The resonator fiber-optic gyroscope includes a sensing resonator have a first resonance frequency for a first laser beam propagation direction and a second resonance frequency for a second laser beam propagation direction, an optical mixer coupled to an output of the sensing resonator and configured to mix an output of the sensing resonator with a reference laser, wherein the optical mixer outputs a beat signal, and a resonance tracking electronics coupled to the optical mixer. The resonance tracking electronics are configured to demodulate the beat signal at a frequency offset to produce first in-phase and quadrature demodulated information, generate R-squared information from a sum of squares of the first in-phase and quadrature demodulated information, and demodulate the R-squared information at a resonance tracking modulation frequency. |
申请公布号 |
EP2759803(A3) |
申请公布日期 |
2016.09.21 |
申请号 |
EP20140151015 |
申请日期 |
2014.01.13 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
QIU, TIEQUN;STRANDJORD, LEE K.;SANDERS, GLEN A.;SALIT, MARY K. |
分类号 |
G01C19/72 |
主分类号 |
G01C19/72 |
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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