A Geometry Calibration Technique for Hydrophone Array with Sources in Near Field

A new algorithm involving flank array geometry calibration under strong multipath conditions is proposed to address the problem of installation errors and the shell deformation. The derived linear mapping relationship between geometric error of sensors and signal eigenvector reduces the calculating difficulty in near calibration mode. By regarding the reflection as coherent visual sources in known position, the compensation strategy of strong multipath matching is put forward. Cramer–Rao bound (CRB) analysis for the calibration mode is employed. Numerical simulations and lake trials verify the efficiency of the proposed algorithm and illustrate the performance improvement under strong multipath conditions.

[1]  R. A. Scholtz,et al.  Multipath interferometry technique for airborne array calibration , 1999 .

[2]  Jungtai Kim,et al.  Blind Calibration for a Linear Array With Gain and Phase Error Using Independent Component Analysis , 2010, IEEE Antennas and Wireless Propagation Letters.

[3]  Rainer Martin,et al.  Low-complexity, robust algorithm for sensor anomaly detection and self-calibration of microphone arrays , 2011 .

[4]  D. Davidson,et al.  Improving the Calibration Efficiency of an Array Fed Reflector Antenna Through Constrained Beamforming , 2013, IEEE Transactions on Antennas and Propagation.

[5]  Anthony J. Weiss,et al.  Array shape calibration using sources in unknown locations-a maximum likelihood approach , 1989, IEEE Trans. Acoust. Speech Signal Process..

[6]  Bernard Mulgrew,et al.  Maximum likelihood array calibration using particle swarm optimisation , 2012, IET Signal Process..

[7]  Meng Hwa Er,et al.  A Practical Simple Geometry and Gain/Phase Calibration Technique for Antenna Array Processing , 2009, IEEE Transactions on Antennas and Propagation.

[8]  Shi Jie,et al.  Robust localization and identification method of moving sound sources based on worst-case performance optimization , 2011 .

[9]  John Canning,et al.  Field Testing of Moving Short‐baseline Navigation for Autonomous Underwater Vehicles using Synchronized Acoustic Messaging , 2013, J. Field Robotics.

[10]  Chungyong Lee,et al.  A Simplified Subspace Fitting Method for Estimating Shape of a Towed Array , 2008, IEEE Journal of Oceanic Engineering.

[11]  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.

[12]  Mati Wax,et al.  Array calibration in the presence of multipath , 2000, IEEE Trans. Signal Process..

[13]  S. Aksoy,et al.  ANALYTICAL TIME DOMAIN NORMAL MODE SOLUTION OF AN ACOUSTIC WAVEGUIDE WITH PERFECTLY REFLECTING WALLS , 2013 .

[14]  Yi Wei Lin,et al.  A Parametric Study of Sound Focusing in Shallow Water by Using Acoustic Contrast Control , 2014 .