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http://dx.doi.org/10.12673/jant.2022.26.2.78

Closed-form based 3D Localization for Multiple Signal Sources  

Ko, Yo-han (C4I R&D Laboratory, LIG Nex1)
Bu, Sung-chun (C4I R&D Laboratory, LIG Nex1)
Lee, Chul-soo (C4I R&D Laboratory, LIG Nex1)
Lim, Jae-wook (C4I R&D Laboratory, LIG Nex1)
Chae, Ju-hui (Electronic Warfare Laboratory, LIG Nex1)
Publication Information
Journal of Advanced Navigation Technology / v.26, no.2, 2022 , pp. 78-84 More about this Journal
Abstract
In this paper, we propose a closed-form based 3D localization method in the presence of multiple signal sources. General localization methods such as TDOA, AOA, and FDOA can estimate a location when a single signal source exists. When there are multiple unknown signal sources, there is a limit in estimating the location. The proposed method calculates a cross-correlation vector of signals received by sensors having an array antenna, and estimates TDOA and AOA values from the cross-correlation values. Then, the coordinate transformation is performed using the position of the reference sensor. Then, the coordinate rotation is performed using the estimated AOA value for the transformed coordinates, and then the three-dimensional position of each emitter is estimated. The proposed method verifies its performance through computer simulation.
Keywords
3D localization; Angle of arrival; Array antenna; Multiple signal sources; Time difference of arrival;
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