© The Institution of Engineering and Technology
In the presence of steering vector model mismatches, a novel robust adaptive beamformer is proposed based on interference-plus-noise covariance matrix reconstruction. An interference region is first selected according to the coarsely estimated desired signal direction, and then the interference steering vectors are estimated with the robust Capon beamformer. Finally, the interference-plus-noise covariance matrix is reconstructed by integrating the Capon spatial spectrum over the interference region by using the estimated steering vectors.
References
-
-
1)
-
1. Gu, Y., Leshem, A.: ‘Robust adaptive beamforming based on interference covariance matrix reconstruction and steering vector estimation’, IEEE Trans. Signal Process., 2012, 60, (7), pp. 3881–3885 (doi: 10.1109/TSP.2012.2194289).
-
2)
-
7. Er, M.H., Ng, B.C.: ‘A new approach to robust beamforming in the presence of steering vectors errors’, IEEE Trans. Signal Process., 1994, 42, (7), pp. 1826–1829 (doi: 10.1109/78.298291).
-
3)
-
3. Nai, S.E., Ser, W., Yu, Z.L., Chen, H.W.: ‘Iterative robust minimum variance beamforming’, IEEE Trans. Signal Process., 2011, 59, (4), pp. 1601–1611 (doi: 10.1109/TSP.2010.2096222).
-
4)
-
6. Lu, Z.X., Gao, M.G., Li, Y.J.: ‘Robust Capon beamformer based on direction search’, Electron. Lett., 2012, 48, (23), pp. 1472–1473 (doi: 10.1049/el.2012.3211).
-
5)
-
4. Jin, W., Jia, W.M., Yao, M.L., Lin, Z.Q.: ‘Iterative doubly constrained robust Capon beamformer’, Electron. Lett., 2011, 47, (25), pp. 1372–1373 (doi: 10.1049/el.2011.3360).
-
6)
-
5. Li, J., Stoica, P., Wang, Z.: ‘Doubly constrained robust Capon beamformer’, IEEE Trans. Signal Process., 2004, 52, (9), pp. 2407–2423 (doi: 10.1109/TSP.2004.831998).
-
7)
-
2. Li, J., Stoica, P., Wang, Z.: ‘On robust Capon beamforming and diagonal loading’, IEEE Trans. Signal Process., 2003, 51, (7), pp. 1702–1715 (doi: 10.1109/TSP.2003.812831).
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