The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 2003
Filed:
Apr. 26, 2002
Applicant:
Inventor:
Isao Endo, Kawagoe, JP;
Assignee:
Pioneer Corporation, Tokyo-to, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 2/100 ;
U.S. Cl.
CPC ...
G01C 2/100 ;
Abstract
A navigation apparatus includes: a multi-path detection unit which detects multi-path based on a pseudo-range; a pseudo-range error selection unit which selects an error in the pseudo-range based on the detected multi-path and navigation data; and an error ellipse calculation unit which calculates an error ellipse based on the pseudo-range error selected by the pseudo-range error selection unit and the received navigation data, and executes navigation processing based on a vehicle's own current position calculated by a positioning calculation unit and the error ellipse calculated by the error ellipse calculation unit.