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:
Jul. 27, 2010
Filed:
Feb. 18, 2005
Takayoshi Nakamoto, Chiyoda-ku, JP;
Fumio Ueda, Chiyoda-ku, JP;
Seiichiro Hirata, Suita, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Magellan Systems Japan, Inc., Amagasaki, JP;
Abstract
A positioning apparatus includes a correlatorfor calculating a correlation between the pseudo pattern code of each of satellitesandand each of SPS signals associated with the satellitesand, and for outputting a correlation value indicating the correlation, sets up effective rangesandfor the correlation values outputted from the correlatoron the basis of a pseudo distance PRbetween the satelliteand a SPS reference station, and a pseudo distance PRbetween the satelliteand the SPS reference station, and detects peak values which fall within the effective rangesand, respectively. As a result, the positioning apparatus can determine the current position correctly even under a receiving environment in which the electric waves directly from the satellitesandmay become weak.