References
Li J F, Li D, Jiang D F, et al. Extended-aperture unitary root MUSIC-based DOA estimation for coprime array. IEEE Commun Lett, 2018, 22: 752–755
Rao B D, Hari K V S. Performance analysis of root-MUSIC. IEEE Trans Acoust Speech Signal Process, 1989, 37: 1939–1949
Yan F G, Shen Y, Jin M. Fast DOA estimation based on a split subspace decomposition on the array covariance matrix. Signal Process, 2015, 115: 1–8
Hu A Z, Lv T J, Gao H, et al. An ESPRIT-based approach for 2-D localization of incoherently distributed sources in massive MIMO systems. IEEE J Sel Top Signal Process, 2014, 8: 996–1011
Yan F G, Liu S, Wang J, et al. Unitary direction of arrival estimation based on a second forward/backward averaging technique. IEEE Commun Lett, 2018, 22: 554–557
Kitavi D M, Wong K T, Hung C C. An L-shaped array with nonorthogonal axes-its Cramér-Rao bound for direction finding. IEEE Trans Aerosp Electron Syst, 2018, 54: 486–492
Acknowledgements
This work was supported by National Natural Science Foundation of China (Grant No. 61871149).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yan, F., Jin, M., Zhou, H. et al. Low-degree root-MUSIC algorithm for fast DOA estimation based on variable substitution technique. Sci. China Inf. Sci. 63, 159206 (2020). https://doi.org/10.1007/s11432-018-9635-0
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/s11432-018-9635-0