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. 18, 2015
Filed:
Feb. 13, 2015
Thales, Courbevoie, FR;
THALES, Courbevoie, FR;
Abstract
A method is provided for correlating a received satellite radio-navigation signal made up of a first pilot signal modulated with a first spreading code and a second data signal modulated with a second primary spreading code of a length equal to that of the first spreading code, the second data signal being further modulated with a secondary sequence comprising a plurality of chips, the duration of a chip being equal to a multiple of the length of the second primary spreading code, the first pilot signal and the second data signal being synchronous. The correlation method comprises the following steps: first correlations, over a plurality N of periods of the first spreading code, of the radio-navigation signal with the first spreading code; the selection, out of the N first correlations, of a subset containing a number M of correlations; and the coherent integration of the M correlations of the subset.