A digital signal processor with a stabilizer for open-loop fiber optic gyroscope

개회로 광섬유 자이로스코프용 신호처리기의 안정화

A Signal processor for the open-loop fiber optic gyroscope(FOG) is equipped with a stabilizer to reduce the error due to drift of fiber phase modulator (FPM). The stabilizer is designed to be operated to maintain the ratio of amplitude and phase between harmonics in the FOG signal. When FPM stabilizer is used, the temperature drift of FOG is reduced to less than 0.5 deg/hr in change of 20$^{\circ}C$.