Array Manifold Manipulation for Short Distance DOA Estimation with a Handheld Device

Conference: Smart SysTech 2015 - European Conference on Smart Objects, Systems and Technologies
07/16/2015 - 07/17/2015 at Aachen, Germany

Proceedings: ITG-Fb. 259: Smart SysTech 2015

Pages: 7Language: englishTyp: PDF

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Eberhardt, Michael; Ascher, Alois; Lehner, Markus; Biebl, Erwin (Fachgebiet Höchstfrequenztechnik, Technische Universität München, Arcisstr. 21, 80333 München, Germany)

A handheld direction-of-arrival estimation device with two antenna elements was developed for localizing with RFID transponder marked fawns. With this device a user shall be able to find fawns in high grass up to a short distance of 0.5 m. In this paper an array manifold manipulation technique is presented to optimize direction-of-arrival estimation results at short distances to the targets. Measurement results with the handheld device are presented and evaluated with different calculated array manifolds. It can be shown that the new calculated array manifolds improve DOA results in short distances.