FR2426886A1 - Gyroscope a laser - Google Patents

Gyroscope a laser

Info

Publication number
FR2426886A1
FR2426886A1 FR7815105A FR7815105A FR2426886A1 FR 2426886 A1 FR2426886 A1 FR 2426886A1 FR 7815105 A FR7815105 A FR 7815105A FR 7815105 A FR7815105 A FR 7815105A FR 2426886 A1 FR2426886 A1 FR 2426886A1
Authority
FR
France
Prior art keywords
laser gyro
ring laser
heterodyned
photodiode
mirror
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.)
Granted
Application number
FR7815105A
Other languages
English (en)
Other versions
FR2426886B1 (fr
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.)
Northrop Grumman Guidance and Electronics Co Inc
Original Assignee
Litton Systems Inc
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 Litton Systems Inc filed Critical Litton Systems Inc
Priority to FR7815105A priority Critical patent/FR2426886A1/fr
Publication of FR2426886A1 publication Critical patent/FR2426886A1/fr
Application granted granted Critical
Publication of FR2426886B1 publication Critical patent/FR2426886B1/fr
Granted 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
    • G01C19/66—Ring laser gyrometers
    • G01C19/667—Ring laser gyrometers using a multioscillator ring laser

Landscapes

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

Abstract

L'invention concerne les gyroscopes à laser. Dans un gyroscope à laser en anneau à quatre modes, les énergies lumineuses correspondant aux quatre fréquences distinctes du gyroscope sont appliquées simultanément à une seule photodiode 30 qui possède une caractéristique non linéaire, ce qui donne un signal électrique combiné qui contient des fréquences de somme et de différence des quatre fréquences. Après filtrage dans le filtre passe-bas 34, on utilise le signal de sortie de la photodiode pour déterminer la vitesse et le sens de rotation du laser en anneau. Application aux dispositifs de guidage à inertie.
FR7815105A 1978-05-22 1978-05-22 Gyroscope a laser Granted FR2426886A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7815105A FR2426886A1 (fr) 1978-05-22 1978-05-22 Gyroscope a laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7815105A FR2426886A1 (fr) 1978-05-22 1978-05-22 Gyroscope a laser

Publications (2)

Publication Number Publication Date
FR2426886A1 true FR2426886A1 (fr) 1979-12-21
FR2426886B1 FR2426886B1 (fr) 1984-06-08

Family

ID=9208525

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7815105A Granted FR2426886A1 (fr) 1978-05-22 1978-05-22 Gyroscope a laser

Country Status (1)

Country Link
FR (1) FR2426886A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479632A1 (fr) * 1980-03-25 1981-10-02 Litton Systems Inc Commande a transducteurs piezoelectriques a compensation thermique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854819A (en) * 1971-03-03 1974-12-17 K Andringa Laser gyroscope
FR2422144A1 (fr) * 1978-04-07 1979-11-02 Raytheon Co Gyroscope a laser a boucle a verrouillage de phase

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854819A (en) * 1971-03-03 1974-12-17 K Andringa Laser gyroscope
FR2422144A1 (fr) * 1978-04-07 1979-11-02 Raytheon Co Gyroscope a laser a boucle a verrouillage de phase

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479632A1 (fr) * 1980-03-25 1981-10-02 Litton Systems Inc Commande a transducteurs piezoelectriques a compensation thermique

Also Published As

Publication number Publication date
FR2426886B1 (fr) 1984-06-08

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Legal Events

Date Code Title Description
ST Notification of lapse