Abstract
Based on the non-uniform cross-array, a self-calibration algorithm is proposed to simultaneously estimate the angle of the impinging signal and the mutual coupling error. Firstly, the mutual coupling matrix of the non-uniform cross-array is divided into two parts: the mutual coupling matrix in non-uniform linear array and the mutual coupling matrix between non-uniform linear arrays. Then, the partitioned mutual coupling matrix is decomposed into the sum of several matrices with special characteristics. Thus, the decoupling of angle and mutual coupling coefficients is realized conveniently, so as to estimate the angle of the signal and mutual coupling coefficients. The proposed algorithm does not need auxiliary sources or prior information of the mutual coupling matrix. Moreover, it can reduce the search dimension, and hence, the amount of computation. Theoretical analysis and simulation results show that the proposed algorithm has improved angular resolution and it can estimate the mutual coupling error coefficients precisely. Hence, it can effectively solve the mutual coupling problem for the non-uniform cross-array.











Similar content being viewed by others
References
A. Bazzi, D.T.M. Slock, L. Meilhac, Online angle of arrival estimation in the presence of mutual coupling, in Proceedings of IEEE Workshop on Statistical Signal Processing (2016), pp. 26–29
F. Belfiori, S. Monni, R.W. Van et al., Antenna array characterisation and signal processing for an FM radio-based passive coherent location radar system. IET Radar Sonar Navig. 6(8), 687–696 (2012)
E. Boudaher, F. Ahmad, M.G. Amin, A. Hoorfar, Mutual coupling effect and compensation in non-uniform arrays for direction-of-arrival estimation. Digit. Signal Process. 61(2017), 3–14 (2017)
S.H. Cao. Direction of Arrival Estimation Algorithms in the Presence of Array Error. Ph.D. thesis, University of Science and Technology of China (2014)
A.M. Elbir, Calibration of directional mutual coupling for antenna arrays. Digit. Signal Process. 69, 117–126 (2017)
S. Henault, S.K. Podilchak, S.M. Mikki et al., A methodology for mutual coupling estimation and compensation in antennas. IEEE Trans. Antennas Propag. 61(3), 1119–1131 (2013)
Y.G. Hou, T.Y. Zhang, S.C. Wu, An optimization estimation for mutual coupling correction of L-shaped non-uniform array with single snapshot. Math. Probl. Eng. 2015(3), 1–11 (2015)
X.Q. Hu, H. Chen, Y.L. Wang et al., A self-calibration algorithm for cross array in the presence of mutual coupling. Sci. China Inf. Sci. 54(4), 836–848 (2011)
G.J. Jiang, Y.N. Dong, X.P. Mao et al., Improved 2D direction of arrival estimation with a small number of elements in UCA in the presence of mutual coupling. AEU Int. J. Electron. Commun. 71, 131–138 (2016)
B. Liao, S.C. Chan, Direction finding with partly calibrated uniform linear array. IEEE Trans. Antennas Propag. 60(2), 922–929 (2012)
H. Liang, C. Cui, J. Yu, Reduced-dimensional DOA estimation based on ESPRIT algorithm in monostatic MIMO radar with cross array. J. Electron. Inf. Technol. 38(1), 80–89 (2016)
M. Lin, Z.Q. Gong, Subspace-based calibration approach for mutual coupling among sensors. Acta Electron. Sin. 29(9), 1176–1178 (2001)
S. Liu, L.S. Yang, S.Z. Yang et al., Blind direction-of-arrival estimation with uniform circular array in presence of mutual coupling. Int. J. Antennas Propag. 2016(8), 1–7 (2016)
C.Y. Qi, Y.L. Wang, Y.S. Zhang et al., One-dimensional DOA estimation and self-calibration algorithm for multiple subarrays in the presence of mutual coupling. J. Electron. Inf. Technol. 26(5), 909–914 (2006)
D. Wang, Y. Wu, The multiplicative array errors calibration algorithms in the presence of multipath. Sci. China Ser. E Inf. Sci. 45(2), 270–288 (2015)
Y.L. Wang, H. Chen, Y.N. Peng et al., Theory and Algorithms of Spatial Spectrum Estimation (Tsinghua University Press, Beijing, 2004)
M. Wang, X.C. Ma, S.F. Yan, An auto-calibration algorithm for uniform circular array with unknown mutual coupling. IEEE Antennas Wirel. Propag. Lett. 15(6), 12–15 (2016)
B. Wang, Y.D. Zhang, W. Wang, Robust DOA estimation in the presence of miscalibrated sensors. IEEE Signal Process. Lett. 24(7), 1073–1077 (2017)
B. Wang, W. Wang, Y.J. Gu et al., Underdetermined DOA estimation of quasi-stationary signal using a partially calibrated array. Sensors 17(704), 1–14 (2017)
F.Q. Wen, X.D. Xiong, Z.J. Zhang, Angle and mutual coupling estimation in bistatic MIMO radar based on PARAFAC decomposition. Digit. Signal Process. 65, 1–10 (2017)
F.Q. Wen, Z.J. Zhang, K. Wang et al., Angle estimation and mutual coupling self-calibration for ULA-based bistatic MIMO radar. Signal Process. 144, 61–67 (2018)
B. Wu, H. Chen, DOA Estimation and self-calibration algorithm for Y-shaped array in the presence of mutual coupling, in Proceedings of International Congress on Image and Signal Processing (2009), pp. 1–5
F.G. Yan, S. Liu, M. Jin et al., 2-D DOA estimation method based on dimension descended noise subspace. J. Electron. Inf. Technol. 34(4), 832–837 (2012)
C. Zhang, M.J. Zhao, Y.L. Cai, Joint 2-D DOA estimation and mutual coupling calibration for uniform rectangular arrays, in Proceedings of International Conference on Wireless Communication (2015), pp. 1–5
Acknowledgements
This work was supported by the National Natural Science Foundation of China under Grant 61501505. The authors are grateful to anonymous reviewers for their valuable comments and suggestions which have greatly improved this paper.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhang, J., Chen, H., Huang, W. et al. Self-Calibration of Mutual Coupling for Non-uniform Cross-Array. Circuits Syst Signal Process 38, 1137–1156 (2019). https://doi.org/10.1007/s00034-018-0899-0
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00034-018-0899-0