GB2130729B - Electronic compasses - Google Patents

Electronic compasses

Info

Publication number
GB2130729B
GB2130729B GB08325213A GB8325213A GB2130729B GB 2130729 B GB2130729 B GB 2130729B GB 08325213 A GB08325213 A GB 08325213A GB 8325213 A GB8325213 A GB 8325213A GB 2130729 B GB2130729 B GB 2130729B
Authority
GB
United Kingdom
Prior art keywords
electronic compasses
compasses
electronic
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
Application number
GB08325213A
Other versions
GB8325213D0 (en
GB2130729A (en
Inventor
Brian Gerald Marchent
Michael Roy Foster
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB08325213A priority Critical patent/GB2130729B/en
Publication of GB8325213D0 publication Critical patent/GB8325213D0/en
Publication of GB2130729A publication Critical patent/GB2130729A/en
Application granted granted Critical
Publication of GB2130729B publication Critical patent/GB2130729B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/38—Testing, calibrating, or compensating of compasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Navigation (AREA)
GB08325213A 1982-10-12 1983-09-21 Electronic compasses Expired GB2130729B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08325213A GB2130729B (en) 1982-10-12 1983-09-21 Electronic compasses

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8229134 1982-10-12
GB08325213A GB2130729B (en) 1982-10-12 1983-09-21 Electronic compasses

Publications (3)

Publication Number Publication Date
GB8325213D0 GB8325213D0 (en) 1983-10-26
GB2130729A GB2130729A (en) 1984-06-06
GB2130729B true GB2130729B (en) 1986-05-14

Family

ID=26284107

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08325213A Expired GB2130729B (en) 1982-10-12 1983-09-21 Electronic compasses

Country Status (1)

Country Link
GB (1) GB2130729B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3422490A1 (en) * 1984-06-16 1985-12-19 Robert Bosch Gmbh, 7000 Stuttgart METHOD FOR CORRECTING ANGLE ERRORS IN AN ELECTRONIC COMPASS IN VEHICLES
DE3509548A1 (en) * 1985-03-16 1986-09-18 Robert Bosch Gmbh, 7000 Stuttgart METHOD FOR DETERMINING THE DIRECTION OF A VEHICLE WITH AN ELECTRONIC COMPASS
JPH0629732B2 (en) * 1986-10-08 1994-04-20 三菱電機株式会社 Direction detector for mobile
GB2213937B (en) * 1987-12-17 1992-01-22 Plessey Co Plc Navigation compass calibration
RU2098764C1 (en) * 1996-05-29 1997-12-10 Русланов Александр Семенович Method for determination of moving object location and device for its realization
JP3872262B2 (en) 2000-01-25 2007-01-24 セイコーインスツル株式会社 Electronic compass and electronic watch with electronic compass
JP3857499B2 (en) * 2000-05-12 2006-12-13 セイコーインスツル株式会社 Electronic compass correction mechanism, electronic compass equipped with the same, and electronic timepiece with electronic compass
ES2177469B1 (en) * 2001-05-16 2003-12-16 Fico Mirrors Sa DEVICE FOR DETECTION OF PRESENCE OF OBJECTS IN A DEAD ANGLE OF A MOTOR VEHICLE.
JP2005533321A (en) * 2002-07-17 2005-11-04 フィコ ミロールス，エセ ア Apparatus and method for active monitoring of vehicle safety boundaries
ES2325255T3 (en) * 2003-08-18 2009-08-31 Fico Mirrors, S.A. SYSTEM AND METHOD OF MAGNETIC DETECTION OF PRESENCE OF OBJECTS IN A DEAD ANGLE OF A MOTOR VEHICLE.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO772126L (en) * 1976-06-17 1977-12-20 Laitram Corp PROCEDURE AND DEVICE FOR PRODUCING DEVIATION CORRECTION SIGNALS FOR A MAGNETIC COMPASS
US4143467A (en) * 1978-05-01 1979-03-13 Sperry Rand Corporation Semi-automatic self-contained magnetic azimuth detector calibration apparatus and method

Also Published As

Publication number Publication date
GB8325213D0 (en) 1983-10-26
GB2130729A (en) 1984-06-06

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960921