Computationally efficient 2-D DOA estimation for uniform rectangular arrays |
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| Authors: | Wei Zhang Wei Liu Ju Wang Siliang Wu |
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| Affiliation: | 1. Department of Information and Electronics, Beijing Institute of Technology, Beijing?, 100081, China
2. Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield?, S1 3JD, UK
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| 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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