An improved direction of arrival(DOA)estimation algorithm
called Toeplitz fourth-order cumulant ESPRIT(TFOC-ESPRIT)algorithm
is proposed to deal with the estimation error problem that exists in the reduced-rank fourth-order cumulant(FOC)matrix and is caused by finite sampling snapshots. A reduced-rank FOC matrix is obtained through removing the redundant information encompassed in the primary FOC matrix
while the effective aperture of the virtual array keeps unchanged. Then
the Toeplitz structure of the reduced-rank FOC matrix is recovered by applying the Toepltiz approximation. Finally
the direction of arrival signals is estimated using the ESPRIT algorithm. Simulation results and comparisons with the MFOC-ESPRIT algorithm show that the proposed TFOC-ESPRIT algorithm effectively improves direction-finding accuracy
and that it can not only estimate DOA of more targets with less antennas
but also have higher normalized probability of success - the probability reaches 0.996 and 0.788
respectively
in both the spatially-white noise and the spatially-color noise environments with 400 sampling snapshots.
XU Yuanxin, WANG Anguo, NIE Zhonger. Joint multi-parameters estimation of near-field and far-field sources based on the fourth order cumulant [J]. Journal of Electronics & Information Technology, 2011, 33(6): 1379-1384.
SHI Juan, DENG Ke, YIN Qinye. A method for estimating the direction of arrival of coherent signals on arbitrary antenna array in multi-path scenarios[J]. Journal of Xi'an Jiaotong University, 2009, 43(6): 72-75.
SCHMIDT R O. Multiple emitter location and signal parameter estimation[J]. IEEE Transactions on Antennas and Propagation, 1986, 34(3): 276-280.
ROY R, KAILATH T. ESPRIT:estimation of signal parameters via rotational invariance techniques[J]. IEEE Transactions on Acoustics, Speech and Signal Processing, 1989, 37(7): 984-995.
SHAN Zhilong, YUM T S P. A conjugate augmented approach to direction-of-arrival estimation[J]. IEEE Transactions on Signal Processing, 2005, 53(11): 4104-4109.
YE Zhongfu, ZHANG Yufeng. DOA estimation for non-Gaussian signals using fourth-order cumulants [J]. IET Microwaves, Antennas Propagation, 2009, 3(7): 1069-1078.
YAO Minli, YIN Qingye. High-resolution algorithm for two dimensional direction finding of non-Gaussian sources [J]. Journal of Xi'an Jiaotong University, 1999, 33(1): 15-18.
DIAO Ming, WU Xiaoqiang, LI Xiaogang. Study on DOA estimation based on fourth-order cumulants[J]. Systems Engineering and Electronics, 2008, 30(2): 226-228.
TANG Jianhong, SI Xicai, PENG Qiaole. Estimation of signal parameters via rotational invariance techniques algorithm with speedy fourth-order cumulants[J]. Journal of Xi'an Jiaotong University, 2009, 43(6): 88-92.
HUANG Lei, ZHANG Shu. New beamforming algorithm based on the fourth order cumulant [J]. Systems Engineering and Electronics, 2008, 30(12): 2345-2348.
ZENG Wenjun, LI Xilin, ZHANG Xianda. Direction-of-arrival estimation based on the joint diagonalization structure of multiple fourth-order cumulant matrices[J]. IEEE Signal Processing Letters,2009, 16(3): 164-167.
WANG Ding, YAO Hui, WU Ying. The joint calibration algorithms of mutual coupling and gain-and-phase errors based on covariance matching technique [J]. Acta Electronica Sinica, 2012, 40(3):580-586.