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ICA-based direction-of-arrival estimation of uncorrelated and coherent signals with uniform linear array

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Abstract

A novel approach for direction-of-arrival (DOA) estimation of uncorrelated and coherent signals with uniform linear array is proposed in this paper. First, the mixing matrix, which contains all azimuth information of signal sources, is estimated by independent component analysis. Afterward, several parameter equations are established upon the new mixing matrix. Finally, all DOAs of coherent and uncorrelated signals are estimated by solving these equations. Compared with traditional methods, the proposed method has higher angle resolution and estimation accuracy. Moreover, the signal number resolved by our approach can exceed the number of array elements. Simulation results have demonstrated the efficiency of the proposed method.

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Acknowledgments

The authors thank the anonymous reviewers for their valuable comments and suggestions, which vastly improved the content and presentation of this paper. This research was supported by the National Natural Science Foundation of China (No. 61072120) and the Program for New Century Excellent Talents in University of China (NCET).

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Authors and Affiliations

  1. College of Electronic Science and Engineering, National University of Defense Technology, Changsha, 410073, Hunan, People’s Republic of China

    Guang-wei Ma, Zhi-chao Sha, Zhang-meng Liu & Zhi-Tao Huang

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  1. Guang-wei Ma
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  2. Zhi-chao Sha
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  3. Zhang-meng Liu
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  4. Zhi-Tao Huang
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Correspondence to Guang-wei Ma.

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Ma, Gw., Sha, Zc., Liu, Zm. et al. ICA-based direction-of-arrival estimation of uncorrelated and coherent signals with uniform linear array. SIViP 8, 543–548 (2014). https://doi.org/10.1007/s11760-013-0553-z

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