relation: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/128/
title: Whole-Space Ambiguity Removal in DOA Estimation by AWPC Antenna
creator: Tran, Thi Thuy Quynh
creator: Nguyen, Linh Trung
creator: Phan, Anh
creator: Abed-Meraim, Karim
subject: Communications
subject: Electronics and Communications
description: Antennas without phase center (AWPC) have been used to estimate direction of arrival (DOA) specially in less sensors than sources case. The similarity of two or more steering vectors corresponding to widely separated directions in the array manifold causes ambiguity in the DOA estimation. Recently, \textit{half}-space ambiguity resolution has been done by optimizing the structure of the AWPC, based on Cramer-Rao bound. This paper further proposes a novel method for resolving \textit{whole}-space ambiguity in the DOA estimation by using a uniform circular array (UCA) with multiple optimal AWPC sensors.  The optimal number of AWPC sensors in moderate-size UCAs is also obtained by numerical optimization.
date: 2012-10-10
type: Conference or Workshop Item
type: PeerReviewed
identifier:   Tran, Thi Thuy Quynh and Nguyen, Linh Trung and Phan, Anh and Abed-Meraim, Karim  (2012) Whole-Space Ambiguity Removal in DOA Estimation by AWPC Antenna.  In: The 2012 International Conference on Advanced Technologies for Communications (ATC), 10-12 October 2012, Hanoi, Vietnam.