Title:
ON-VEHICLE POSITIONING APPARATUS
Document Type and Number:
Japanese Patent JP3412262
Kind Code:
B2
Abstract:
PURPOSE: To make the positioning accuracy of a vehicle position more precise.
CONSTITUTION: A relative sensor which measures the relative position of a vehicle to the surface of the ground, a GPS which detects the relative position of a plurality of satellites to the vehicle on the basis of signals sent by the respective satellites and steps 31 to 35, 42 to 53 which can measure a position on the basis of information from the plurality of satellites detected by the GPS, which measure the relative position of the vehicle only on the basis of the output of the GPS when the estimated error of a positioning operation is smaller than a prescribed level and which measure the absolute position of the vehicle only on the basis of the output of the GPS and the output of the relative sensor or the output of the relative sensor in cases other than it are installed in an on-vehicle positioning apparatus.
Inventors:
Seiji Ishikawa
Tomohiro Yamamoto
Yuichi Murakami
Takeshi Ito
Tomio Hota
Tomohiro Yamamoto
Yuichi Murakami
Takeshi Ito
Tomio Hota
Application Number:
JP15014394A
Publication Date:
June 03, 2003
Filing Date:
June 30, 1994
Export Citation:
Assignee:
Aisin Seiki Co., Ltd.
International Classes:
G01C21/00; G01S5/02; G01S19/14; G01S19/20; G01S19/22; G01S19/49; (IPC1-7): G01C21/00; G01S5/02; G01S5/14
Domestic Patent References:
| JP1316607A | ||||
| JP519036A | ||||
| JP4121618A | ||||
| JP4120417A | ||||
| JP429079A |
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