CA2221339A1 - Method and apparatus for navigating with correction of angular speed using azimuth detection sensor - Google Patents

Method and apparatus for navigating with correction of angular speed using azimuth detection sensor

Info

Publication number
CA2221339A1
CA2221339A1 CA002221339A CA2221339A CA2221339A1 CA 2221339 A1 CA2221339 A1 CA 2221339A1 CA 002221339 A CA002221339 A CA 002221339A CA 2221339 A CA2221339 A CA 2221339A CA 2221339 A1 CA2221339 A1 CA 2221339A1
Authority
CA
Canada
Prior art keywords
angular speed
moving object
turn
moving
movement
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
CA002221339A
Other languages
French (fr)
Other versions
CA2221339C (en
Inventor
Hidekazu Oshizawa
Toshikazu Sakakibara
Noboru Taniguchi
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.)
TomTom International BV
Original Assignee
Zexel Corp
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 Zexel Corp filed Critical Zexel Corp
Publication of CA2221339A1 publication Critical patent/CA2221339A1/en
Application granted granted Critical
Publication of CA2221339C publication Critical patent/CA2221339C/en
Anticipated expiration legal-status Critical
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
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/28—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network with correlation of data from several navigational instruments

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Navigation (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Gyroscopes (AREA)

Abstract

An apparatus and method for more accurately determining the position of a moving object by using an azimuth detector distinct from an angular speed detector to correct the gain error and the offset error of the angular speed detector. The position of the moving body is determined using the offset error- and gain error-corrected angular speed. The correction of the offset error includes checking the azimuth and movement of the moving object for three predetermined periods of time; then checking whether the moving object was moving in a straight line each of the three predetermined periods of time. If the object was moving in a straight line each of the three predetermined periods of time, then an offset error correction value is computed using data from the second of the three predetermined periods of time.
The correction of the gain error includes determining the movement of the moving object as straight; then determining the movement of the moving object as a turn; then determining the movement of the moving object as straight again. If the turn was a left turn, a left gain error correction value is computed. Similarly, if the turn was a right turn, a right gain error correction value is computed.
CA002221339A 1996-11-22 1997-11-17 Method and apparatus for navigating with correction of angular speed using azimuth detection sensor Expired - Fee Related CA2221339C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/754,484 US6253154B1 (en) 1996-11-22 1996-11-22 Method and apparatus for navigating with correction of angular speed using azimuth detection sensor
US08/754,484 1996-11-22

Publications (2)

Publication Number Publication Date
CA2221339A1 true CA2221339A1 (en) 1998-05-22
CA2221339C CA2221339C (en) 2001-07-31

Family

ID=25035000

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002221339A Expired - Fee Related CA2221339C (en) 1996-11-22 1997-11-17 Method and apparatus for navigating with correction of angular speed using azimuth detection sensor

Country Status (5)

Country Link
US (1) US6253154B1 (en)
EP (1) EP0844462B1 (en)
JP (1) JP3380727B2 (en)
CA (1) CA2221339C (en)
DE (1) DE69728497T2 (en)

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Also Published As

Publication number Publication date
EP0844462A2 (en) 1998-05-27
DE69728497T2 (en) 2005-04-14
CA2221339C (en) 2001-07-31
EP0844462A3 (en) 1999-10-20
EP0844462B1 (en) 2004-04-07
DE69728497D1 (en) 2004-05-13
US6253154B1 (en) 2001-06-26
JP3380727B2 (en) 2003-02-24
JPH10246642A (en) 1998-09-14

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