METHOD FOR ESTIMATING THE DIRECTION OF ARRIVAL OF AN ELECTROMAGNETIC WAVE AT AN ANTENNA ARRAY

The invention relates to a method for estimating the direction of arrival of an electromagnetic wave at an antenna array (2), comprising the steps of: - estimating (202) a covariance matrix of signals acquired by the antenna array (2); - calculating (204) a normalised eigenvector of the covariance m...

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Bibliographische Detailangaben
Hauptverfasser:	GARCIA, Pierre-Antoine, LILBERT, Arnaud, CHIODINI, Alain Michel
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRICITY 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:	The invention relates to a method for estimating the direction of arrival of an electromagnetic wave at an antenna array (2), comprising the steps of: - estimating (202) a covariance matrix of signals acquired by the antenna array (2); - calculating (204) a normalised eigenvector of the covariance matrix; - correlating (205) the normalised eigenvector with a first reference table and a second reference table so as to produce a first correlation spectrum and a second correlation spectrum comprising correlation indices associated, respectively, with different directions of arrival; - constructing (312) a third reference table by linear combination of the first reference table and the second reference table with a polarisation component of the electromagnetic wave in the first direction and the second direction, respectively; - correlating (314) the normalised eigenvector with the third reference table so as to produce a third correlation spectrum comprising correlation indices associated with different directions of arrival; - identifying (316) a direction of arrival associated with a maximum correlation index of the third correlation spectrum.