DOA estimation for monostatic MIMO radar based on unitary root-MUSIC |
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Authors: | Wei Wang Xin Li Hongru Song |
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Affiliation: | College of Automation , Harbin Engineering University , Harbin 150001 , China |
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Abstract: | Direction of arrival (DOA) estimation is an important issue for monostatic MIMO radar. A DOA estimation method for monostatic MIMO radar based on unitary root-MUSIC is presented in this article. In the presented method, a reduced-dimension matrix is first utilised to transform the high dimension of received signal data into low dimension one. Then, a low-dimension real-value covariance matrix is obtained by forward–backward (FB) averaging and unitary transformation. The DOA of targets can be achieved by unitary root-MUSIC. Due to the FB averaging of received signal data and the eigendecomposition of the real-valued matrix covariance, the proposed method owns better angle estimation performance and lower computational complexity. The simulation results of the proposed method are presented and the performances are investigated and discussed. |
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Keywords: | MIMO radar DOA estimation reduced-dimension matrix unitary transformation unitary root-MUSIC |
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