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公开(公告)号：JP2000171259A
公开(公告)日：2000-06-23
申请号：JP34740499
申请日：1999-12-07
Applicant: LITTON SYSTEMS INC
Inventor： TAZARTES DANIEL A , TIPTON HOWELL J
Abstract: PROBLEM TO BE SOLVED: To determine a number of fringes of an optic fiber gyroscope with high measurement accuracy by determining a value of a controllable parameter, and extracting the number of fringes from an output signal of a detector by utilizing the value. SOLUTION: A light source 2 supplies an appropriately coherent light beam to an optic fiber interferometer 4. The interferometer 4 divides the input light beam into two light beams and supplies the light beams to both ends of an optic fiber which are formed as coils. The light beams ejected from both ends of the optic fiber become a single output light beam, which is supplied to a detector 6. An output from the detector 6 has DC components filtered by an HPF, A/D-converted 8, and fed to a digital processor 10, whereby measurement values of speed and angle of rotation of the interferometer 4 are output. Further, the digital processor 10 generates a phase modulation generating function Φ(t), and its modulo-2π part is D/A-converted 12 and supplied to a phase modulator in the interferometer 4.
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公开(公告)号：DE69921948T2
公开(公告)日：2005-11-24
申请号：DE69921948
申请日：1999-12-09
Applicant: LITTON SYSTEMS INC
Inventor： TAZARTES DANIEL A , TIPTON HOWELL J
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公开(公告)号：DE69921948D1
公开(公告)日：2004-12-23
申请号：DE69921948
申请日：1999-12-09
Applicant: LITTON SYSTEMS INC
Inventor： TAZARTES DANIEL A , TIPTON HOWELL J
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