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:
Aug. 31, 2004
Filed:
Sep. 17, 2002
Applicant:
Inventors:
Niilo Sirola, Tampere, FI;
Jari Syrjärinne, Tampere, FI;
Assignee:
Nokia Corporation, Espoo, FI;
Primary Examiner:
Int. Cl.
CPC ...
G01S 5/14 ;
U.S. Cl.
CPC ...
G01S 5/14 ;
Abstract
The invention relates to a method for performing positioning, in which a spread spectrum signal modulated with a repetition code and transmitted by satellites, is received. The method comprises the steps of performing acquisition to the received, spread spectrum modulated signal, measuring the code phase of the received, spread spectrum modulated signal, and receiving the ephemeris parameters of satellites which are used in the positioning. In the method an optimizing phase is performed in order to minimize a cost function. The cost function includes a fraction operator having an argument that includes at least one residual error.