DE69420418T2 - Navigationssystem mit Umschaltung, wenn ein Radiosignal nicht empfangen werden kann - Google Patents

Navigationssystem mit Umschaltung, wenn ein Radiosignal nicht empfangen werden kann

Info

Publication number
DE69420418T2
DE69420418T2 DE69420418T DE69420418T DE69420418T2 DE 69420418 T2 DE69420418 T2 DE 69420418T2 DE 69420418 T DE69420418 T DE 69420418T DE 69420418 T DE69420418 T DE 69420418T DE 69420418 T2 DE69420418 T2 DE 69420418T2
Authority
DE
Germany
Prior art keywords
switchover
received
navigation system
radio signal
radio
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
DE69420418T
Other languages
English (en)
Other versions
DE69420418D1 (de
Inventor
Masatoshi Hoshino
Shigeru Oho
Yasuhiro Gunji
Hiroshi Kuroda
Kenji Takano
Yoshimasa Nagashima
Mikihiko Onari
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.)
Hitachi Ltd
Faurecia Clarion Electronics Co Ltd
Original Assignee
Hitachi Ltd
Xanavi Informatics 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 Hitachi Ltd, Xanavi Informatics Corp filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE69420418D1 publication Critical patent/DE69420418D1/de
Publication of DE69420418T2 publication Critical patent/DE69420418T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/125—Means for positioning
    • H01Q1/1257—Means for positioning using the received signal strength
    • 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
    • G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
    • G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
    • G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
    • G01C21/165—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments
    • G01C21/1654—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments with electromagnetic compass
    • 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
DE69420418T 1994-11-29 1994-11-29 Navigationssystem mit Umschaltung, wenn ein Radiosignal nicht empfangen werden kann Expired - Lifetime DE69420418T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP94118762A EP0715150B1 (de) 1994-11-29 1994-11-29 Navigationssystem mit Umschaltung, wenn ein Radiosignal nicht empfangen werden kann
US08/349,172 US6081230A (en) 1994-11-29 1994-12-02 Navigation system furnished with means for estimating error of mounted sensor

Publications (2)

Publication Number Publication Date
DE69420418D1 DE69420418D1 (de) 1999-10-07
DE69420418T2 true DE69420418T2 (de) 2000-05-25

Family

ID=26135938

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69420418T Expired - Lifetime DE69420418T2 (de) 1994-11-29 1994-11-29 Navigationssystem mit Umschaltung, wenn ein Radiosignal nicht empfangen werden kann

Country Status (3)

Country Link
US (1) US6081230A (de)
EP (1) EP0715150B1 (de)
DE (1) DE69420418T2 (de)

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Also Published As

Publication number Publication date
DE69420418D1 (de) 1999-10-07
EP0715150A1 (de) 1996-06-05
US6081230A (en) 2000-06-27
EP0715150B1 (de) 1999-09-01

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