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Title:
CONTROLLER FOR SATELLITE NAVIGATION
Document Type and Number:
Japanese Patent JP2005292082
Kind Code:
A
Abstract:

To restrain an electric power consumption in position measurement, in control of a receiver for satellite navigation for measuring a position with a plurality of precisions based on a signal from a satellite for the satellite navigation.

A navigation system 1 switches the position measuring precision of the receiver 2 for the satellite navigation to the high precision, when own vehicle approaches a destination, when traveling on a road not described in map information, when an intersection branched at an acute angle exists within a prescribed distance, when traveling on a narrow street, when traveling on closely adjacent parallel roads, when a self-contained sensor is calibrated, or the like, and switches the position measuring precision of the receiver 2 for the satellite navigation to the lower precision, in the case other than those. A power supply and an operation for the receiver 2 for the satellite navigation required only for an operation for the high-precision position measurement are prohibited, when measuring the position at the low precision by the receiver 2 for the satellite navigation.


Inventors:
TAUCHI NOBUTAKA
MUTO KATSUHIKO
YANO HIDEKI
Application Number:
JP2004111201A
Publication Date:
October 20, 2005
Filing Date:
April 05, 2004
Export Citation:
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Assignee:
DENSO CORP
International Classes:
G01C21/00; G01C21/04; G01C21/26; G01S5/12; G01S19/14; G01S19/34; G01S19/48; G01S19/49; G01S19/50; G08G1/0969; G01S1/00; (IPC1-7): G01S5/14; G01C21/00; G08G1/0969
Domestic Patent References:
JPH09311178A1997-12-02
JP2002341757A2002-11-29
JP2003194913A2003-07-09
JPH0580697A1993-04-02
JPH06148307A1994-05-27
JPH0688867A1994-03-29
JPS63238480A1988-10-04
JP2002213979A2002-07-31
JPH0755912A1995-03-03
JPH11304510A1999-11-05
JP2001134896A2001-05-18
JP2001074487A2001-03-23
JPH10122895A1998-05-15
JP2004003904A2004-01-08
JPH07128423A1995-05-19
JP2002318270A2002-10-31
JP2002228738A2002-08-14
JPH09236443A1997-09-09
Other References:
RAYMOND A. EASTWOOD: "An Integrated GPS/GLONASS Reciever", JOURNAL OF THE INSTITUTE OF NAVIGATION, vol. 37, no. 2, JPN6008064195, 1990, US, pages 141 - 151, ISSN: 0001207375
Attorney, Agent or Firm:
Yoji Ito
Takahiro Miura
Fumihiro Mizuno



 
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