Abstract
A computationally efficient two-dimensional (2-D) direction-of-arrival (DOA) estimation method for uniform rectangular arrays is presented. A preprocessing transformation matrix is first introduced, which transforms both the complex-valued covariance matrix and the complex-valued search vector into real-valued ones. Then the 2-D DOA estimation problem is decoupled into two successive real-valued one-dimensional (1-D) DOA estimation problems with real-valued computations only. All these measures lead to significantly reduced computational complexity for the proposed method.
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Zhang, W., Liu, W., Wang, J. et al. Computationally efficient 2-D DOA estimation for uniform rectangular arrays. Multidim Syst Sign Process 25, 847–857 (2014). https://doi.org/10.1007/s11045-013-0267-y
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DOI: https://doi.org/10.1007/s11045-013-0267-y