ES2049556T3 - Girometro interferometrico con modulador electrooptico. - Google Patents

Girometro interferometrico con modulador electrooptico.

Info

Publication number
ES2049556T3
ES2049556T3 ES92402133T ES92402133T ES2049556T3 ES 2049556 T3 ES2049556 T3 ES 2049556T3 ES 92402133 T ES92402133 T ES 92402133T ES 92402133 T ES92402133 T ES 92402133T ES 2049556 T3 ES2049556 T3 ES 2049556T3
Authority
ES
Spain
Prior art keywords
ring
slope
waves
offset
ramp
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES92402133T
Other languages
English (en)
Inventor
Jacques Rochereau
Claude Leclercq
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sagem SA
Original Assignee
Sagem SA
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 Sagem SA filed Critical Sagem SA
Application granted granted Critical
Publication of ES2049556T3 publication Critical patent/ES2049556T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G01C19/726—Phase nulling gyrometers, i.e. compensating the Sagnac phase shift in a closed loop system

Landscapes

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

Abstract

EL GIROMETRO BASADO SOBRE EL EFECTO SAGNAC, COMPRENDE UNA GUIA DIELECTRICA DE ONDA EN ANILLO (10), DOTADA DE UN SEPARADOR PARA ENVIAR EN EL ANILLO DOS ONDAS CONTRARROTATIVAS QUE PROCEDEN DE LA FUENTE; UN DETECTOR DE INTERFERENCIA (22) QUE RECIBE LAS ONDAS CONTRARROTATIVAS; PRIMEROS MEDIOS ELECTROOPTICOS (17) CONTROLADOS PARA DAR A LAS ONDAS UNA MODULACION PERIODICA ALTERNATIVA Y SIMETRICA DE FASE, A UN PERIODO SENSIBLEMENTE DOBLE DEL TIEMPO DE RECORRIDO DEL ANILLO, COLOCADOS MAS ARRIBA DEL ANILLO PARA UNA ONDA Y MAS ABAJO PARA LA OTRA, SEGUNDOS MEDIOS (31) ATACADOS POR UN GENERADOR DE RAMPA DE DESFASE DE PENDIENTE REGULABLE (30), COLOCADOS MAS ARRIBA DEL ANILLO Y MAS ABAJO PARA LA OTRA; Y MEDIOS ELECTRONICOS DE CIERRE DE CIRCUITO Y DE MEDICION QUE CONTROLAN EL SENTIDO Y EL VALOR DE LA PENDIENTE DE LA RAMPA PARA ANULAR EL DESFASE DE LAS ONDAS RECIBIDAS POR EL DETECTOR DE INTERFERENCIA. LA PENDIENTE DE LA RAMPA DE DESFASE ESTA INVERTIDA CUANDO EL DESFASE SOBREPASA + PI/2 O - PI/2.
ES92402133T 1991-07-25 1992-07-23 Girometro interferometrico con modulador electrooptico. Expired - Lifetime ES2049556T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9109447A FR2679647B1 (fr) 1991-07-25 1991-07-25 Gyrometre interferometrique a modulateur electro-optique.

Publications (1)

Publication Number Publication Date
ES2049556T3 true ES2049556T3 (es) 1994-04-16

Family

ID=9415542

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92402133T Expired - Lifetime ES2049556T3 (es) 1991-07-25 1992-07-23 Girometro interferometrico con modulador electrooptico.

Country Status (7)

Country Link
US (1) US5311281A (es)
EP (1) EP0524885B1 (es)
JP (1) JPH06341840A (es)
CA (1) CA2074620A1 (es)
DE (1) DE69200057T2 (es)
ES (1) ES2049556T3 (es)
FR (1) FR2679647B1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3990450B2 (ja) * 1995-06-07 2007-10-10 ハネウエル・インコーポレーテッド 光ファイバ感知コイル用の固有周波数トラッカ
US6225864B1 (en) * 1999-11-02 2001-05-01 Harris Corporation RF amplifier having a dual slope phase modulator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2555739B1 (fr) * 1980-11-07 1986-04-04 Thomson Csf Dispositif de mesure d'un dephasage non reciproque engendre dans un interferometre en anneau
DE3123163A1 (de) * 1981-06-10 1983-01-05 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt "verfahren und anordnung zur messung absoluter drehungen"
US5137357A (en) * 1990-06-27 1992-08-11 Honeywell Inc. Interferometric signal analysis with modulation switching
JPH0711423B2 (ja) * 1990-06-29 1995-02-08 日本航空電子工業株式会社 光干渉角速度計

Also Published As

Publication number Publication date
CA2074620A1 (fr) 1993-01-26
DE69200057T2 (de) 1994-06-09
DE69200057D1 (de) 1994-04-07
US5311281A (en) 1994-05-10
EP0524885A1 (fr) 1993-01-27
EP0524885B1 (fr) 1994-03-02
JPH06341840A (ja) 1994-12-13
FR2679647A1 (fr) 1993-01-29
FR2679647B1 (fr) 1993-11-05

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