NO940599L - Fremgangsmåte for å utlede et signal fra et fasemodulert fiberoptisk gyroskop samt fremgangsmåte for å påvise en modulasjonsfaktor - Google Patents

Fremgangsmåte for å utlede et signal fra et fasemodulert fiberoptisk gyroskop samt fremgangsmåte for å påvise en modulasjonsfaktor

Info

Publication number
NO940599L
NO940599L NO940599A NO940599A NO940599L NO 940599 L NO940599 L NO 940599L NO 940599 A NO940599 A NO 940599A NO 940599 A NO940599 A NO 940599A NO 940599 L NO940599 L NO 940599L
Authority
NO
Norway
Prior art keywords
deriving
detecting
signal
fiber optic
phase modulated
Prior art date
Application number
NO940599A
Other languages
English (en)
Other versions
NO940599D0 (no
Inventor
Yozo Nishiura
Yasuhiko Nishi
Original Assignee
Sumitomo Electric Industries
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries filed Critical Sumitomo Electric Industries
Publication of NO940599D0 publication Critical patent/NO940599D0/no
Publication of NO940599L publication Critical patent/NO940599L/no

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
    • G01C19/58—Turn-sensitive devices without moving masses
    • G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
    • G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Gyroscopes (AREA)

Abstract

En vekselstrømskomponent fra en fotodetektor omfatter to kvasi-sinusbølger innenfor en fasemodulasjonsperiode. T1 og T2 angir varigheten av disse kvasi-sinusbølger. Når en fiberspole er i rotasjon vil T, avvike fra T2. Forskjellen mellom T^ og T2 er proporsjonal med fiberspolens vinkel- hastighet. I henhold til oppfinnelsen utledes vinkelhastig- heten ved å måle tidsavsnittene Tl( T2 eller både Tj og T2. Null-krysningsdeteksjon fastlegger tidspunktene for begynnelse og slutt av T^ og T2. Da gyroskopet i dette tilfelle bare avhenger av måling av tidsavsnitt, vil det ikke være påvirket av fluktuasjoner i lyseffekt på grunn av lyskilden, eller forsterkningsfluktuasjoner i den elektriske krets.
NO940599A 1993-02-24 1994-02-22 Fremgangsmåte for å utlede et signal fra et fasemodulert fiberoptisk gyroskop samt fremgangsmåte for å påvise en modulasjonsfaktor NO940599L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6116993 1993-02-24
JP6013145A JPH06307875A (ja) 1993-02-24 1994-01-10 信号検出方法及び位相変調度変動の検出方法

Publications (2)

Publication Number Publication Date
NO940599D0 NO940599D0 (no) 1994-02-22
NO940599L true NO940599L (no) 1994-08-25

Family

ID=26348878

Family Applications (1)

Application Number Title Priority Date Filing Date
NO940599A NO940599L (no) 1993-02-24 1994-02-22 Fremgangsmåte for å utlede et signal fra et fasemodulert fiberoptisk gyroskop samt fremgangsmåte for å påvise en modulasjonsfaktor

Country Status (6)

Country Link
US (1) US5455676A (no)
EP (1) EP0612981A1 (no)
JP (1) JPH06307875A (no)
KR (1) KR940020121A (no)
CA (1) CA2116293A1 (no)
NO (1) NO940599L (no)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5781296A (en) * 1995-07-28 1998-07-14 Tokimec Inc. Closed loop type fiber optic gyroscope for measuring absolute rotation by delta serrodyne wave phase modulation
US5978084A (en) * 1997-08-26 1999-11-02 The Texas A&M University System Open loop signal processing circuit and method for a fiber optic interferometric sensor
US6188811B1 (en) 1998-10-31 2001-02-13 The Texas A&M Universtiy System Fiber optic current sensor
US6307632B1 (en) 1999-03-24 2001-10-23 The Texas A&M University System Magnetic field integrated fiber optic sensor with improved sensitivity
US6711308B2 (en) * 2001-12-26 2004-03-23 Lucent Technologies Inc. Electro-optical modulators
US7333209B2 (en) * 2005-11-09 2008-02-19 Honeywell International, Inc. Fiber optic gyroscope asynchronous demodulation
JP5268367B2 (ja) * 2008-01-10 2013-08-21 株式会社東芝 位相変調子、位相変調子組体及び光センサ
US7710576B2 (en) * 2008-03-10 2010-05-04 Honeywell International Inc. Method and apparatus for monitoring angle random walk of a fiber optic gyroscope
EP2288659B1 (en) * 2008-05-07 2011-11-09 3M Innovative Properties Company Antimicrobial nanoparticles
US8149417B2 (en) 2010-01-27 2012-04-03 Honeywell International Inc. Synchronous radiation hardened fiber optic gyroscope
US9823075B2 (en) * 2013-01-10 2017-11-21 Xiaotian Steve Yao Non-interferometric optical gyroscope based on polarization sensing
US9857176B2 (en) * 2013-06-20 2018-01-02 Tubitak (Turkiye Bilimsel Ve Teknolojik Arastirma Kurumu) Dynamically monitoring the instantaneous zero rotation rate voltage of interferometric fiber optic gyroscope (IFOG)
CN103926059B (zh) * 2014-04-30 2017-01-18 电子科技大学 电光相位调制器调制系数的测量方法
DE102015004039A1 (de) * 2015-03-27 2016-09-29 Northrop Grumman Litef Gmbh Mittelwertfrei gesteuerter Phasenmodulator für faseroptische Kreisel und faseroptischer Kreisel
US10594539B2 (en) 2018-06-05 2020-03-17 Tm Ip Holdings, Llc Transpositional modulation and demodulation

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0718707B2 (ja) * 1983-10-04 1995-03-06 住友電気工業株式会社 光フアイバジヤイロ
JPS60135816A (ja) * 1983-12-26 1985-07-19 Sumitomo Electric Ind Ltd 光フアイバジヤイロ
JPS61117410A (ja) * 1984-11-14 1986-06-04 Agency Of Ind Science & Technol 光フアイバジヤイロ
JPS61124817A (ja) * 1984-11-21 1986-06-12 Agency Of Ind Science & Technol 位相変調方式光フアイバジヤイロ
JPH0743263B2 (ja) * 1984-12-21 1995-05-15 工業技術院長 位相変調方式光ファイバジャイロ
JPS61284607A (ja) * 1985-06-11 1986-12-15 Agency Of Ind Science & Technol 光フアイバジヤイロ
JPS6280512A (ja) * 1985-10-04 1987-04-14 Agency Of Ind Science & Technol 光フアイバジヤイロ
JPS62212514A (ja) * 1986-03-14 1987-09-18 Agency Of Ind Science & Technol 光フアイバジヤイロ
JPS63138208A (ja) * 1986-12-01 1988-06-10 Agency Of Ind Science & Technol 位相変調方式光フアイバジヤイロ
US4779975A (en) * 1987-06-25 1988-10-25 The Board Of Trustees Of The Leland Stanford Junior University Interferometric sensor using time domain measurements
US4869592A (en) * 1988-01-27 1989-09-26 Bergh Ralph A Method and apparatus for obtaining a digital measure of absolute rotation
JPH03118415A (ja) * 1989-10-02 1991-05-21 Hitachi Ltd 干渉測定方法、干渉センサ、干渉センサ回路、干渉センサｌｓｉ、および、光ファイバジャイロ装置

Also Published As

Publication number Publication date
KR940020121A (ko) 1994-09-15
NO940599D0 (no) 1994-02-22
US5455676A (en) 1995-10-03
CA2116293A1 (en) 1994-08-25
EP0612981A1 (en) 1994-08-31
JPH06307875A (ja) 1994-11-04

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