Patent · US Active

Method of acquiring a GPS signal by iterative decoding

US9203465B2 · kind B2 · utility

0Cited by

1References

13Claims

0Family size

Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Mathieu Bouvier Des Noes · Grenoble, FR
Valentin Savin · Grenoble, FR

Key dates

Filing date	Feb 20, 2014
Grant date	Dec 1, 2015
Priority date	—
Expiry date	Mar 7, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH04B2201/70715
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

The invention relates to a method of acquiring a GPS signal, spread by a Gold sequence obtained as the sum of a first M-sequence and a second M-sequence, this second M-sequence being characteristic of a satellite among a plurality of satellites in the GPS system. The acquisition method comprises a sampling step starting from a given time (410), a multiplication step for the sequence of samples obtained with the first M-sequence (420) and an iterative decoding step for the decoded values (430) making it possible to estimate the content of the second shift register of the second M-sequence at said given time. If the content thus estimated is identical to the initial content of the second register for an identified satellite (443), the receiver is synchronized with this satellite at said given time (490).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.