GB2201774B - Apparatus and methods for measuring phase modulation - Google Patents

Apparatus and methods for measuring phase modulation

Info

Publication number: GB2201774B
Authority: GB; United Kingdom
Prior art keywords: methods; phase modulation; measuring phase; measuring; modulation
Prior art date: 1987-03-05
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 - Fee Related

Application number

GB8805138A

Other versions

GB8805138D0 (en

GB2201774A (en

Inventor

Peter Donald Baker

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.)

Smiths Group PLC

Original Assignee

Smiths Group PLC

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.)

1987-03-05

Filing date

1988-03-03

Publication date

1991-02-20

1988-03-03 Application filed by Smiths Group PLC filed Critical Smiths Group PLC

1988-03-30 Publication of GB8805138D0 publication Critical patent/GB8805138D0/en

1988-09-07 Publication of GB2201774A publication Critical patent/GB2201774A/en

1991-02-20 Application granted granted Critical

1991-02-20 Publication of GB2201774B publication Critical patent/GB2201774B/en

2008-03-03 Anticipated expiration legal-status Critical

Status Expired - Fee Related 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

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)
Testing Of Optical Devices Or Fibers (AREA)

GB8805138A 1987-03-05 1988-03-03 Apparatus and methods for measuring phase modulation Expired - Fee Related GB2201774B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB878705141A GB8705141D0 (en)	1987-03-05	1987-03-05	Measuring phase modulation

Publications (3)

Publication Number	Publication Date
GB8805138D0 GB8805138D0 (en)	1988-03-30
GB2201774A GB2201774A (en)	1988-09-07
GB2201774B true GB2201774B (en)	1991-02-20

Family

ID=10613355

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
GB878705141A Pending GB8705141D0 (en)	1987-03-05	1987-03-05	Measuring phase modulation
GB8805138A Expired - Fee Related GB2201774B (en)	1987-03-05	1988-03-03	Apparatus and methods for measuring phase modulation

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
GB878705141A Pending GB8705141D0 (en)	1987-03-05	1987-03-05	Measuring phase modulation

Country Status (4)

Country	Link
JP (1)	JP2641891B2 (en)
DE (1)	DE3807325C2 (en)
FR (1)	FR2611897B1 (en)
GB (2)	GB8705141D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4003326A1 (en) *	1990-02-05	1991-08-08	Teldix Gmbh	METHOD AND ARRANGEMENT FOR DETERMINING ANGLE SPEEDS
US7327460B2 (en) *	2005-11-02	2008-02-05	Honeywell International, Inc.	Transmission mode RFOG and method for detecting rotation with RFOG

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4299490A (en) *	1978-12-07	1981-11-10	Mcdonnell Douglas Corporation	Phase nulling optical gyro
US4372685A (en) *	1979-01-15	1983-02-08	Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V.	Method and arrangement for the measurement of rotations
GB2108652B (en) *	1981-10-27	1985-05-30	Standard Telephones Cables Ltd	Fibre-optic interferometer gyroscope
JPS58214809A (en) *	1982-06-09	1983-12-14	Nippon Telegr & Teleph Corp <Ntt>	Fiber gyro
JPS59610A (en) *	1982-06-28	1984-01-05	Fujitsu Ltd	Optical fiber gyroscope
JPH0743263B2 (en) *	1984-12-21	1995-05-15	工業技術院長	Phase modulation optical fiber gyro

1987
- 1987-03-05 GB GB878705141A patent/GB8705141D0/en active Pending
1988
- 1988-03-03 GB GB8805138A patent/GB2201774B/en not_active Expired - Fee Related
- 1988-03-04 JP JP63051412A patent/JP2641891B2/en not_active Expired - Lifetime
- 1988-03-04 FR FR8803000A patent/FR2611897B1/en not_active Expired - Fee Related
- 1988-03-05 DE DE3807325A patent/DE3807325C2/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
GB8805138D0 (en)	1988-03-30
GB2201774A (en)	1988-09-07
FR2611897B1 (en)	1993-10-29
JPS63234164A (en)	1988-09-29
JP2641891B2 (en)	1997-08-20
FR2611897A1 (en)	1988-09-09
GB8705141D0 (en)	1987-04-08
DE3807325A1 (en)	1988-09-15
DE3807325C2 (en)	1997-01-09

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Legal Events

Date	Code	Title	Description
1998-10-21	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19980303