Direction of Arrival Estimation Under Near-Field Interference Using Matrix Filter

Direction of arrival (DOA) estimation is of great interest due to its wide applications in sonar, radar and many other areas. However, the near-field interference is always presented in the received data, which may result in degradation of DOA estimation. An approach which can suppress the near-field interference and preserve the far-field signal desired by using a spatial matrix filter is proposed in this paper and some typical DOA estimation algorithms are adjusted to match the filtered data. Simulation results show that the approach can improve capability of DOA estimation under near-field inference efficiently.

[1]  Alex B. Gershman,et al.  Direction finding using beamspace root estimator banks , 1998, IEEE Trans. Signal Process..

[2]  Tong Tong Zhang,et al.  Compensation for the mutual coupling effect in the ESPRIT direction finding algorithm by using a more effective method , 2005, IEEE Transactions on Antennas and Propagation.

[3]  B.D. Van Veen,et al.  Beamforming: a versatile approach to spatial filtering , 1988, IEEE ASSP Magazine.

[4]  Richard J. Vaccaro,et al.  Optimal matrix-filter design , 1996, IEEE Trans. Signal Process..

[5]  C. MacInnes,et al.  Source localization using subspace estimation and spatial filtering , 2004, IEEE Journal of Oceanic Engineering.

[6]  Thomas Kailath,et al.  ESPRIT-estimation of signal parameters via rotational invariance techniques , 1989, IEEE Trans. Acoust. Speech Signal Process..

[7]  R. O. Schmidt,et al.  Multiple emitter location and signal Parameter estimation , 1986 .

[8]  Mohammad Javad Emadi,et al.  HIGH RESOLUTION DOA ESTIMATION IN FULLY COHERENT ENVIRONMENTS , 2008 .

[9]  Xiaofei Zhang,et al.  Multi-Invariance ESPRIT-Based Blind DOA Estimation for MC-CDMA With an Antenna Array , 2009, IEEE Transactions on Vehicular Technology.

[10]  T. Ohira,et al.  Enhanced Reactance-Domain ESPRIT Algorithm Employing Multiple Beams and Translational-Invariance Soft Selection for Direction-of-Arrival Estimation in the Full Azimuth , 2008, IEEE Transactions on Antennas and Propagation.

[11]  Henry Leung,et al.  Matrix filter design using semi-infinite programming with application to DOA estimation , 2000, IEEE Trans. Signal Process..

[12]  Fa-Long Luo,et al.  Adaptive null-forming scheme in digital hearing aids , 2002, IEEE Trans. Signal Process..