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:
Oct. 30, 2012
Filed:
Mar. 05, 2007
Nicolas Martin, Bourg les Valence, FR;
Yves Clauzel, Montelimar, FR;
Nicolas Martin, Bourg les Valence, FR;
Yves Clauzel, Montelimar, FR;
Thales, , FR;
Abstract
The field of the invention is that of the reception of a radionavigation signal originating from a satellite positioning system such as the GPS system. The present invention concerns a method for calculating correlations between a first sequence and a second sequence, said first sequence and said second sequence having a duration D, the first sequence being extracted from a digital signal comprising a code, said code comprising elementary time divisions, called chips, of mean duration D, said chips being synchronized with pulses delivered by an NCO oscillator at the mean frequency 2/D, the second sequence resulting from a sampling at a frequency Fof an analog signal, the frequency Fbeing greater than 2/D. According to the invention, the method comprises a step of aggregating samples of the second sequence, over consecutive integration intervals of duration equal on average to D/2, starting at each pulse of the NCO oscillator, so as to determine results of elementary aggregates.