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Technical Program

Paper Detail

Paper:	SAM-L4.2
Session:	Direction-Of-Arrival Estimation
Time:	Thursday, May 18, 16:50 - 17:10
Presentation:	Lecture
Topic:	Sensor Array and Multichannel Signal Processing: Adaptive beamforming and direction of arrival estimation
Title:	Efficient 1-D and 2-D DOA estimation for non-circular sources with hexagonal shaped ESPAR arrays
Authors:	Florian Roemer, Martin Haardt, Ilmenau University of Technology, Germany
Abstract:	This contribution is focused on direction of arrival (DoA) estimation with a regular-hexagonal shaped ESPAR (electronically steerable parasitic antenna radiator) array that has received increased attention recently. It is shown how the estimation accuracy is improved by employing non-circular (NC) signal constellations that facilitate the application of the NC Unitary ESPRIT algorithm. It is demonstrated how this method allows the joint estimation of the azimuth and the elevation angles of up to eight uncorrelated sources with a 7-element ESPAR array. Moreover, the achievable benefits of using non-circular sources are assessed by studying deterministic Cramer-Rao bounds. It is shown that for special phase constellations between the impinging wavefronts the estimation accuracy is independent of the angular separation of the corresponding DoAs.