Wideband Direction of Arrival Estimation in the Presence of Unknown Mutual Coupling

This paper investigates a subarray based algorithm for direction of arrival (DOA) estimation of wideband uniform linear array (ULA), under the presence of frequency-dependent mutual coupling effects. Based on the Toeplitz structure of mutual coupling matrices, the whole array is divided into the middle subarray and the auxiliary subarray. Then two-sided correlation transformation is applied to the correlation matrix of the middle subarray instead of the whole array. In this way, the mutual coupling effects can be eliminated. Finally, the multiple signal classification (MUSIC) method is utilized to derive the DOAs. For the condition when the blind angles exist, we refine DOA estimation by using a simple approach based on the frequency-dependent mutual coupling matrixes (MCMs). The proposed method can achieve high estimation accuracy without any calibration sources. It has a low computational complexity because iterative processing is not required. Simulation results validate the effectiveness and feasibility of the proposed algorithm.

[1]  Guangming Shi,et al.  Wideband DOA Estimation Based on Sparse Representation in 2-D Frequency Domain , 2015, IEEE Sensors Journal.

[2]  Ali Akdagli,et al.  Compact multiple-input multiple-output antenna with low correlation for ultra-wide-band applications , 2015 .

[3]  Guolin Li,et al.  DOA Estimation of Coherent Signals Based on Direct Data Domain Under Unknown Mutual Coupling , 2014, IEEE Antennas and Wireless Propagation Letters.

[4]  P. Russer,et al.  An analysis of wideband direction-of-arrival estimation for closely-spaced sources in the presence of array model errors , 2003, IEEE Microwave and Wireless Components Letters.

[5]  Weijian Si,et al.  Two-Dimensional DOA and Polarization Estimation for a Mixture of Uncorrelated and Coherent Sources with Sparsely-Distributed Vector Sensor Array , 2016, Sensors.

[6]  Anthony J. Weiss,et al.  Direction Finding In The Presence Of Mutual Coupling , 1991, Twenty-Second Asilomar Conference on Signals, Systems and Computers.

[7]  B. Cantrell,et al.  Wideband array antenna concept , 2005, IEEE International Radar Conference, 2005..

[8]  Hon Tat Hui,et al.  Wideband mutual coupling compensation for receiving antenna arrays using the system identification method , 2011 .

[9]  Shahrokh Valaee,et al.  Wideband array processing using a two-sided correlation transformation , 1995, IEEE Trans. Signal Process..

[10]  Xiao-Wei Shi,et al.  A New Wideband Mutual Coupling Compensation Method for Adaptive Arrays Based on Element Pattern Reconstruction , 2014 .

[11]  S. Deger,et al.  Effect of Mutual Coupling on the Performance of Adaptive Arrays , 2006, 2006 IEEE 14th Signal Processing and Communications Applications.

[12]  Zhou Yi-yu.  Modeling of wideband array signal in presence of mutual coupling and its influence on DOA estimation , 2009 .

[13]  A. Hirata,et al.  DOA estimation of ultra-wideband EM waves with MUSIC and interferometry , 2003, IEEE Antennas and Wireless Propagation Letters.

[14]  Zhongfu Ye,et al.  On the Resiliency of MUSIC Direction Finding Against Antenna Sensor Coupling , 2008, IEEE Transactions on Antennas and Propagation.

[15]  Reinhard Feger,et al.  On the Effects of Calibration Errors and Mutual Coupling on the Beam Pattern of an Antenna Array , 2013, IEEE Transactions on Antennas and Propagation.

[16]  Matthew Trinkle,et al.  DOA Estimation under Unknown Mutual Coupling and Multipath with Improved Effective Array Aperture , 2015, Sensors.

[17]  Hon Tat Hui.  A practical approach to compensate for the mutual coupling effect in an adaptive dipole array , 2004, IEEE Transactions on Antennas and Propagation.

[18]  Alexander Yarovoy,et al.  Conformal antenna array for ultra-wideband direction-of-arrival estimation , 2011 .

[19]  Xiaowei Shi,et al.  A New Compensation Method for the Mutual Coupling Effect in Wideband 2D Direction-of-Arrival Estimations , 2013 .

[20]  Yiyu Zhou,et al.  Covariance-Based Direction-of-Arrival Estimation of Wideband Coherent Chirp Signals via Sparse Representation , 2013, Sensors.

[21]  E. Friel,et al.  Mutual coupling effects and their reduction in wideband direction of arrival estimation , 1994 .

[22]  Xuan Hui Wu,et al.  Antenna Effects on a Monostatic MIMO Radar for Direction Estimation, a Cramèr-Rao Lower Bound Analysis , 2011, IEEE Transactions on Antennas and Propagation.

[23]  Jisheng Dai,et al.  A Recursive RARE Algorithm for DOA Estimation With Unknown Mutual Coupling , 2014, IEEE Antennas and Wireless Propagation Letters.

[24]  Zhongxiang Shen,et al.  Wide-Band Wide-Coverage Linear Array of Four Semi-Circular Sector Horns , 2012, IEEE Transactions on Antennas and Propagation.