Title :
2-D Angle of Arrival Estimation with Two Parallel Uniform Linear Arrays for Coherent Signals
Author :
Xia, T.Q. ; Zheng, Y. ; Wan, Q. ; Wang, X.G.
Author_Institution :
Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
In this paper, a previously proposed estimator is extended to estimate two dimensional (2-D) angles of arrival of multiple highly correlated and coherent signals by using forward /backward spatial smoothing techniques. The special structure of the two parallel uniform linear arrays (ULAs) is exploited to estimate 2-D angles of arrival as polynomial roots. The computation complexity of the proposed method is discussed. Simulation results show that the proposed method can achieve higher resolutions and lower root mean square errors compared with DOA matrix method.
Keywords :
array signal processing; computational complexity; correlation methods; direction-of-arrival estimation; least mean squares methods; matrix algebra; smoothing methods; 2D angle of arrival estimation; DOA matrix method; coherent signals; computational complexity; forward /backward spatial smoothing techniques; lower root mean square errors; polynomial roots; two parallel uniform linear arrays; Computational modeling; Direction of arrival estimation; Multiple signal classification; Polynomials; Root mean square; Sensor arrays; Signal resolution; Smoothing methods; Spatial resolution; Two dimensional displays; angle of arrival; polynomial roots; spatial smoothing; uniform linear array;
Conference_Titel :
Radar Conference, 2007 IEEE
Conference_Location :
Boston, MA
Print_ISBN :
1-4244-0284-0
Electronic_ISBN :
1097-5659
DOI :
10.1109/RADAR.2007.374221
