Sparsity-based DOA estimation of coherent and uncorrelated targets using transmit/receive co-prime arrays

Elie BouDaher; Fauzia Ahmad; Moeness G. Amin

doi:10.1117/12.2177597

14 May 2015 Sparsity-based DOA estimation of coherent and uncorrelated targets using transmit/receive co-prime arrays

Elie BouDaher, Fauzia Ahmad, Moeness G. Amin

Author Affiliations +

Proceedings Volume 9484, Compressive Sensing IV; 94840E (2015) https://doi.org/10.1117/12.2177597
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

In this paper, we use transmit/receive co-prime arrays for direction finding of mixed coherent and uncorrelated targets based on the concept of sum coarrays. The sum coarray is defined as the set of pair-wise sums of the position vectors of the elements in the transmit and receive apertures. The data measurements from the transmit/receive co-prime array are used to emulate observations at a virtual array, whose element positions are given by the sum coarray corresponding to the co-prime array. A group sparse reconstruction problem is formulated employing multiple snapshots, where each group corresponding to a specific angle of arrival extends across all the time samples. The number of resolvable targets for the proposed sparsity-based approach is limited by the number of elements in the sum coarray. Supporting simulation results are provided, which validate the effectiveness of the proposed direction finding method.

Citation Download Citation

Elie BouDaher, Fauzia Ahmad, and Moeness G. Amin "Sparsity-based DOA estimation of coherent and uncorrelated targets using transmit/receive co-prime arrays", Proc. SPIE 9484, Compressive Sensing IV, 94840E (14 May 2015); https://doi.org/10.1117/12.2177597

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