A new DOA estimation technique based on subarray beamforming

A new direction-of-arrival (DOA) estimation technique using subarray beamforming is proposed. Two virtual subarrays are used to form a signal whose phase relative to the reference signal is a function of the DOA. The DOA is then estimated based on the computation of the phase shift between the refer...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on signal processing 2006-09, Vol.54 (9), p.3279-3290
Main Authors: Nanyan Wang, Agathoklis, P., Antoniou, A.
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Array signal processing
Beamforming
Cochannel interference
Computation
Computer simulation
Detection, estimation, filtering, equalization, prediction
direction of arrival (DOA)
Direction of arrival estimation
Directive antennas
estimation
Exact sciences and technology
Information, signal and communications theory
Interference
Mathematical analysis
Maximum likelihood estimation
Miscellaneous
Multiple signal classification
Phase estimation
Radar antennas
Reference signals
Rejection
Signal and communications theory
Signal processing
Signal, noise
Sonar
Telecommunications and information theory
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new direction-of-arrival (DOA) estimation technique using subarray beamforming is proposed. Two virtual subarrays are used to form a signal whose phase relative to the reference signal is a function of the DOA. The DOA is then estimated based on the computation of the phase shift between the reference signal and its phase-shifted version. Since the phase-shifted reference signal is obtained after interference rejection through beamforming, the effect of cochannel interference on the estimation is significantly reduced. The proposed technique is computationally simple, and the number of signal sources detectable is not bounded by the number of antenna elements used. Performance analysis and extensive simulations show that the proposed technique offers significantly improved estimation resolution, capacity, and accuracy relative to existing techniques
ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2006.877653