In this paper we discuss the calibration procedure and effectiveness for an indoor Direction of Arrival (DOA) positioning system based on a switched six-beams antenna operating at 2.45 GHz. The introduced calibration procedure consists in optimizing the radiation pattern parameters of the antenna to minimize DOA estimations error, over a limited set of known positions. The estimations are obtained by the multiple signal classification (MUSIC [1]). We demonstrate that in a realistic indoor environment the mean errors for the DOA estimations are less than 4.9 deg for both the DOA coordinate angles θ and θ, with a peak error of 8 deg, while a DoA estimation accuracy less than 3 deg was observed
Calibration of a 2.45 GHz indoor direction of arrival system based on unknown antenna gain / Maddio, Stefano; Cidronali, Alessandro; Giorgetti, Gianni; Manes, Gianfranco. - ELETTRONICO. - (2010), pp. 77-80. (Intervento presentato al convegno 13th European Microwave Week 2010, EuMW2010: Connecting the World - 7th European Radar Conference, EuRAD 2010 tenutosi a Paris, fra nel 2010).
Calibration of a 2.45 GHz indoor direction of arrival system based on unknown antenna gain
MADDIO, STEFANO;CIDRONALI, ALESSANDRO;GIORGETTI, GIANNI;MANES, GIANFRANCO
2010
Abstract
In this paper we discuss the calibration procedure and effectiveness for an indoor Direction of Arrival (DOA) positioning system based on a switched six-beams antenna operating at 2.45 GHz. The introduced calibration procedure consists in optimizing the radiation pattern parameters of the antenna to minimize DOA estimations error, over a limited set of known positions. The estimations are obtained by the multiple signal classification (MUSIC [1]). We demonstrate that in a realistic indoor environment the mean errors for the DOA estimations are less than 4.9 deg for both the DOA coordinate angles θ and θ, with a peak error of 8 deg, while a DoA estimation accuracy less than 3 deg was observedFile | Dimensione | Formato | |
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