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A subspace rotation-based technique for estimating 2-D arrival angles using nonlinear array configurations

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2 Author(s)
Sakarya, F.A. ; Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Hayes, M.H., III

This paper presents a subspace rotation based method to estimate 2-D direction-of-arrival (DOA) angles of narrowband signals radiated by far-field sources using planar and volume arrays. The new approach automatically pairs 2-D DOA angles by computing them directly from the normalized eigenvectors of a newly derived signal space matrix (SSM). This eliminates the constraint on subarray spacing and the need for a search procedure. Other advantages include adjustability in the accuracy of the DOA angles and maximum detectability of the master array

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Signal Processing, IEEE Transactions on  (Volume:42 ,  Issue: 2 )