ES2085142T3 - Girometro de fibra optica de elaboracion numerica de la señal. - Google Patents

Girometro de fibra optica de elaboracion numerica de la señal.

Info

Publication number
ES2085142T3
ES2085142T3 ES93902375T ES93902375T ES2085142T3 ES 2085142 T3 ES2085142 T3 ES 2085142T3 ES 93902375 T ES93902375 T ES 93902375T ES 93902375 T ES93902375 T ES 93902375T ES 2085142 T3 ES2085142 T3 ES 2085142T3
Authority
ES
Spain
Prior art keywords
coil
waves
numerical
ramp
receives
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
ES93902375T
Other languages
English (en)
Inventor
Jacques Rochereau
Jean-Francois Pepin
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 ES2085142T3 publication Critical patent/ES2085142T3/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 COMPORTA UNA BOBINA DE FIBRA OPTICA (10); UNA FUENTE ELECTROMAGNETICA (12) PROVISTA DE UN SEPARADOR PARA ENVIAR A LA BOBINA DOS ONDAS CONTRAROTATIVAS QUE PROVIENEN DE LA FUENTE; UN DETECTOR DE INTERFERENCIA (22) QUE RECIBE LAS ONDAS CONTRAROTATIVAS; UNOS MEDIOS ELECTRO-OPTICOS DE DESFASAJE (31), POR UNA PARTE MANDADOS PARA DAR A LAS ONDAS UNA MODULACION PERIODICA ALTERNATIVA Y SIMETRICA DE FASE, CON UN 1/2 PERIODO TN SENSIBLEMENTE IGUAL AL TIEMPO TF DE RECORRIDO DE LA BOBINA, POR OTRA PARTE RECIBEN UNA RAMPA DE DESFASAJE DE PENDIENTE REGULABLE, COLOCADOS MAS ARRIBA DE LA BOBINA PARA UNA ONDA Y MAS ABAJO PARA LA OTRA; Y UNOS MEDIOS ELECTRONICOS EN ANILLO Y DE MEDIDA QUE MANDAN EL SENTIDO Y EL VALOR DE LA PENDIENTE DE LA RAMPA PARA ANULAR EL DESFASAJE DE LAS ONDAS RECIBIDAS POR EL DETECTOR. LOS MEDIOS ELECTRONICOS COMPRENDEN UN CONVERTIDOR ANALOGICO-NUMERICO (27) QUE RECIBE LA SEÑAL DE SALIDA DEL DETECTOR DE INTERFERENCIA (22) Y ACOMETER UNA CADENA QUE TIENE UN DEMODULADOR NUMERICO (26) QUE RECIBE UNA SEÑAL DE REFERENCIA DE PERIODO 2 TN, UN INTEGRADOR (28) QUE SUMINISTRA UNA SEÑAL REPRESENTATIVA DE UNA ESTIMACION DE LA VELOCIDAD DE ROTACION, UN SUMADOR (29) DE CORRECCION Y UN INTEGRADOR (30) DE GENERACION DE LA DICHA RAMPA.
ES93902375T 1991-12-23 1992-12-23 Girometro de fibra optica de elaboracion numerica de la señal. Expired - Lifetime ES2085142T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9116003A FR2685471B1 (fr) 1991-12-23 1991-12-23 Gyrometre a fibre optique a traitement numerique du signal.

Publications (1)

Publication Number Publication Date
ES2085142T3 true ES2085142T3 (es) 1996-05-16

Family

ID=9420380

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93902375T Expired - Lifetime ES2085142T3 (es) 1991-12-23 1992-12-23 Girometro de fibra optica de elaboracion numerica de la señal.

Country Status (7)

Country Link
EP (1) EP0576655B1 (es)
JP (1) JPH06507726A (es)
CA (1) CA2104458A1 (es)
DE (1) DE69208081T2 (es)
ES (1) ES2085142T3 (es)
FR (1) FR2685471B1 (es)
WO (1) WO1993013387A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5999260A (en) * 1998-07-21 1999-12-07 Litton Systems, Inc. Method and apparatus for initialization of a fiber optic gyroscope

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457505A1 (fr) * 1979-05-23 1980-12-19 Thomson Csf Modulateur d'intensite lumineuse a commande numerique en optique integree et convertisseur numerique analogique comprenant un tel modulateur
JPH06103189B2 (ja) * 1989-11-07 1994-12-14 日本航空電子工業株式会社 光干渉角速度計
FR2660996B1 (fr) * 1990-04-17 1992-08-07 Photonetics Dispositif de mesure a fibre optique, gyrometre, centrale de navigation et de stabilisation, capteur de courant.

Also Published As

Publication number Publication date
FR2685471B1 (fr) 1995-05-12
DE69208081D1 (de) 1996-03-14
EP0576655A1 (fr) 1994-01-05
EP0576655B1 (fr) 1996-01-31
WO1993013387A1 (fr) 1993-07-08
JPH06507726A (ja) 1994-09-01
CA2104458A1 (fr) 1993-06-24
FR2685471A1 (fr) 1993-06-25
DE69208081T2 (de) 1996-09-12

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