Patent ID: 8665927

Claim:
Method for acquisition of a signal emitted by a satellite, by a receiver in a satellite GNSS Global Positioning System, having several channels, each comprising several code correlators ( 12 ) with which frequency-augmented correlators ( 14 ) are associated, the method comprising steps in which: code correlators ( 12 ) of a channel are used to create a multi-code correlation of the received signal ( 2 ) with replica signals successively code-shifted relative to each other by a code space, frequency-augmented correlators ( 14 ) associated with a code correlator ( 12 ), are used to create a multi-frequency correlation of the result of the correlation of the code correlator ( 12 ) with carriers shifted in frequency relative to a central frequency coherent of the generation speed of the replica signal of the code correlator ( 12 ), an error being induced at the output from each frequency-augmented correlator ( 14 ) depending on the shift relative to the central frequency and the duration during which the results of the multi-frequency correlation are integrated, wherein the method being also includes steps according to which: the successive results of each frequency-augmented correlator ( 14 ) are summated at several instants during an integration period of the results of the multi-frequency correlation, if the error induced at the output from a first frequency-augmented correlator ( 14 ) expressed as an integer number of code spaces between the code correlators ( 12 ) at each of these instants has increased relative to the induced error expressed as an integer number of code spaces between code correlators ( 12 ) at the output from the same correlator ( 14 ) valid in the previous instant, then the summated results of the first frequency-augmented correlator ( 14 ) are transferred to the summated results of a second frequency-augmented correlator ( 14 ), the second frequency-augmented correlator ( 14 ) using the same frequency-shift as the first frequency-augmented correlator ( 14 ) and being associated with a second code correlator ( 12 ) that is shifted by the code space from the first code correlator ( 12 ) with which said first frequency-augmented correlator ( 14 ) is associated.