Disambiguated direction finding

Methods and systems for determining an angle of arrival (AoA) of a RF emitter signal (212) utilizing phase comparisons between pairs of antennas from among two closely spaced antenna elements (214a, 214b) and a third antenna element (214c) fixedly positioned more distant, and a combination of TDOA a...

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Bibliographische Detailangaben
Hauptverfasser:	Flanders, Bradley A, Robinson, Ian S
Format:	Patent
Sprache:	eng
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:	Methods and systems for determining an angle of arrival (AoA) of a RF emitter signal (212) utilizing phase comparisons between pairs of antennas from among two closely spaced antenna elements (214a, 214b) and a third antenna element (214c) fixedly positioned more distant, and a combination of TDOA and PI techniques, to resolve PI ambiguities. Overlapping AoA ambiguity patterns with different angular spacings may be resolved by TDOA techniques. A span of TDOA AoA possibilities is obtained, centered at a solution to a TDOA angle calculation and bounded by a known TDOA measurement error range.