METHOD FOR CORRELATING A RECEIVED SATELLITE RADIO-NAVIGATION SIGNAL AND CORRELATION DEVICE IMPLEMENTING THE METHOD

Method for correlating a received satellite radio-navigation signal (S) made up of a first pilot signal modulated with a first spreading code (Code1) and a second data signal modulated with a second primary spreading code (Code2) of a length equal to that of the first spreading code, said second dat...

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Bibliographische Detailangaben
Hauptverfasser:	AL BITAR, HANAA, RAIMONDI, MATHIEU, FERNET, CHARLES
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	Method for correlating a received satellite radio-navigation signal (S) made up of a first pilot signal modulated with a first spreading code (Code1) and a second data signal modulated with a second primary spreading code (Code2) of a length equal to that of the first spreading code, said 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 (Code2), the first pilot signal and the second data signal being synchronous, said correlation method comprising the following steps : - first correlations (101), over a plurality N of periods of said first spreading code, of the radio-navigation signal (S) with said first spreading code (Code1), - the selection (104), out of the N first correlations (C k), of a subset containing a number M of correlations, - the coherent integration (106) of the M correlations of said subset.