Title :
DOA estimation with hexagonal arrays
Author :
Tian, Zhi ; Van Trees, Harry L.
Author_Institution :
C3I Center, George Mason Univ., Fairfax, VA, USA
Abstract :
Hexagonal arrays are widely used in practice but have received less attention in the optimum array processing literature. In this paper, we show how unitary ESPRIT can be applied to hexagonal arrays for direction-of-arrival (DOA) estimation. The resulting estimates exhibit good threshold behavior, and are close to the Cramer-Rao bound above threshold. We also show how to use spatial smoothing in hexagonal arrays for DOA estimation in the presence of coherent signals
Keywords :
array signal processing; direction-of-arrival estimation; smoothing methods; Cramer-Rao bound; DOA estimation; coherent signals; direction-of-arrival; hexagonal arrays; spatial smoothing; threshold behavior; unitary ESPRIT; Array signal processing; Direction of arrival estimation; Embedded computing; Parameter estimation; Sampling methods; Sensor arrays; Signal sampling; Smoothing methods; Symmetric matrices; Transmission line matrix methods;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.681547
