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Sensors 2011, 11(9), 9098-9108;

Direction-of-Arrival Estimation Based on Joint Sparsity

School of Electronic Science and Engineering, NUDT, Changsha 410073, China
Author to whom correspondence should be addressed.
Received: 16 August 2011 / Revised: 17 September 2011 / Accepted: 18 September 2011 / Published: 21 September 2011
(This article belongs to the Section Physical Sensors)
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We present a DOA estimation algorithm, called Joint-Sparse DOA to address the problem of Direction-of-Arrival (DOA) estimation using sensor arrays. Firstly, DOA estimation is cast as the joint-sparse recovery problem. Then, norm is approximated by an arctan function to represent joint sparsity and DOA estimation can be obtained by minimizing the approximate norm. Finally, the minimization problem is solved by a quasi-Newton method to estimate DOA. Simulation results show that our algorithm has some advantages over most existing methods: it needs a small number of snapshots to estimate DOA, while the number of sources need not be known a priori. Besides, it improves the resolution, and it can also handle the coherent sources well. View Full-Text
Keywords: joint-sparse; compressed sensing; Direction-of-Arrival; quasi-Newton methods; multiple measure vectors joint-sparse; compressed sensing; Direction-of-Arrival; quasi-Newton methods; multiple measure vectors
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Wang, J.; Huang, Z.; Zhou, Y. Direction-of-Arrival Estimation Based on Joint Sparsity. Sensors 2011, 11, 9098-9108.

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