Fast communication: a fast algorithm for 2-D direction-of-arrival estimation

Authors:
Yuntao Wu;Guisheng Liao;H. C. So
Affiliations:
Laboratory for Radar Signal Processing, Xidian University, Xian, China;Laboratory for Radar Signal Processing, Xidian University, Xian, China;Department of Computer Engineering and Information Technology, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
Venue:
Signal Processing - Special section: Hans Wilhelm Schüßler celebrates his 75th birthday
Year:
2003

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Abstract

A computationally efficient method for two-dimensional direction-of-arrival estimation of multiple narrowband sources impinging on the far field of a planar array is presented. The key idea is to apply the propagator method which only requires linear operations but does not involve any eigendecomposition or singular value decomposition as in common subspace techniques such as MUSIC and ESPRIT. Comparing with a fast ESPRIT-based algorithm, it has a lower computational complexity particularly when the ratio of array size to the number of sources is large, at the expense of negligible performance loss. Simulation results are included to demonstrate the performance of the proposed technique.