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Joint DOD–DOA Estimation Based on Signal Subspace Approach in MIMO Radars

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Abstract

This paper deals with joint direction of departure (DOD) and direction of arrival (DOA) estimation using a subspace-based approach in bistatic multiple-input multiple-output radars. First, a conventional rotational invariance technique is used to estimate DOD. Then the steering vector of DOA corresponding to the estimated DOD is obtained using the proposed signal subspace estimation method. The steering vector is then converted to the angle of arrival. This way, the DOD and DOA pairing are automatically obtained. Numerical simulations show that the estimated angles using the proposed approach are more accurate than those using the conventional methods.

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Acknowledgments

The authors would like to thank the anonymous reviewers for their valuable and constructive comments, which helped to improve the presentation of the paper. This work is partially supported by the National Science Council of Taiwan under grant no. NSC 102-2221- E-011-093 and NSC 102-2623- E-155-002.

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Authors and Affiliations

  1. Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan

    Cheng-Han Hsu, Hsin-Chin Liu & Meng-Chang Hua

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  1. Cheng-Han Hsu
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  2. Hsin-Chin Liu
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Correspondence to Cheng-Han Hsu.

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Hsu, CH., Liu, HC. & Hua, MC. Joint DOD–DOA Estimation Based on Signal Subspace Approach in MIMO Radars. Wireless Pers Commun 77, 951–961 (2014). https://doi.org/10.1007/s11277-013-1545-6

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  • DOI: https://doi.org/10.1007/s11277-013-1545-6

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