Implementation of a closed-loop signal processor for the open-loop FOG

개회로 FOG의 폐회로 신호처리기의 구현

  • 김도익 (경희대학교 공과대학 전자공학과, 레이저 공학 연구소) ;
  • 예윤해 (경희대학교 공과대학 전자공학과, 레이저 공학 연구소)
  • Published : 1997.10.01


A signal processor is implemented to verify the possibility of a closed-loop signal processing for the open-loop fiber-optic gyroscope (FOG). As an all-digital implementation of phase tracking scheme, it does analog-to digital conversion of the detector output and signal processing all-digitally thereafter for a noise-immune FOG signal processor. It has a potential of 36-bits resolution in the $2\pi$ range which is best in the number and sets no limit in the magnitude of the phase shift. The new signal processor was tested on an all-fiber gyroscope and turned out to have a resolution of $3\mu$rad(corresponds to 0.74 deg/hr), which is good enough to measure the Earth's rotation rate.



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