INTERFEROMETRIC TIME DELAY OF ARRIVAL

Systems and methods for determining an angle of arrival (AoA) of a signal received from an emitters at a pair of antennas (220) spaced apart by more than one half wavelength of the received signal (210). Features of the signal are determined, including a phase difference between signal components de...

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Bibliographische Detailangaben
Hauptverfasser:	FLANDERS, BRADLEY A, KILFOYLE, DANIEL, ROBINSON, IAN S
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:	Systems and methods for determining an angle of arrival (AoA) of a signal received from an emitters at a pair of antennas (220) spaced apart by more than one half wavelength of the received signal (210). Features of the signal are determined, including a phase difference between signal components detected at the antennas (245), and a time difference of arrival (TDOA) (250) having a known measurement error. A set of TDOA possibilities bounded by the known TDOA measurement error and a set of AoA estimates using phase interferometry (PI) within the range are calculated. The TDOA set is iteratively reduced to determine a precise AoA estimate for the emitter.